From: Anna Zaks <ganna@apple.com>
Date: Thu, 16 Feb 2012 22:26:07 +0000 (+0000)
Subject: [analyzer] Malloc Checker: Make the diagnostic visitor handle the case
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=fe571608b925079227d053a459eca86f7408e5c6;p=clang

[analyzer] Malloc Checker: Make the diagnostic visitor handle the case
of failing realloc. + Minor cleanups.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150732 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/StaticAnalyzer/Checkers/MallocChecker.cpp b/lib/StaticAnalyzer/Checkers/MallocChecker.cpp
index a14057980f..044db28400 100644
--- a/lib/StaticAnalyzer/Checkers/MallocChecker.cpp
+++ b/lib/StaticAnalyzer/Checkers/MallocChecker.cpp
@@ -184,11 +184,18 @@ private:
   /// region.
   class MallocBugVisitor : public BugReporterVisitor {
   protected:
+    enum NotificationMode {
+      Normal,
+      Complete,
+      ReallocationFailed
+    };
+
     // The allocated region symbol tracked by the main analysis.
     SymbolRef Sym;
+    NotificationMode Mode;
 
   public:
-    MallocBugVisitor(SymbolRef S) : Sym(S) {}
+    MallocBugVisitor(SymbolRef S) : Sym(S), Mode(Normal) {}
     virtual ~MallocBugVisitor() {}
 
     void Profile(llvm::FoldingSetNodeID &ID) const {
@@ -197,14 +204,28 @@ private:
       ID.AddPointer(Sym);
     }
 
-    inline bool isAllocated(const RefState *S, const RefState *SPrev) {
+    inline bool isAllocated(const RefState *S, const RefState *SPrev,
+                            const Stmt *Stmt) {
       // Did not track -> allocated. Other state (released) -> allocated.
-      return ((S && S->isAllocated()) && (!SPrev || !SPrev->isAllocated()));
+      return (Stmt && isa<CallExpr>(Stmt) &&
+              (S && S->isAllocated()) && (!SPrev || !SPrev->isAllocated()));
     }
 
-    inline bool isReleased(const RefState *S, const RefState *SPrev) {
+    inline bool isReleased(const RefState *S, const RefState *SPrev,
+                           const Stmt *Stmt) {
       // Did not track -> released. Other state (allocated) -> released.
-      return ((S && S->isReleased()) && (!SPrev || !SPrev->isReleased()));
+      return (Stmt && isa<CallExpr>(Stmt) &&
+              (S && S->isReleased()) && (!SPrev || !SPrev->isReleased()));
+    }
+
+    inline bool isReallocFailedCheck(const RefState *S, const RefState *SPrev,
+                                     const Stmt *Stmt) {
+      // If the expression is not a call, and the state change is
+      // released -> allocated, it must be the realloc return value
+      // check. If we have to handle more cases here, it might be cleaner just
+      // to track this extra bit in the state itself.
+      return ((!Stmt || !isa<CallExpr>(Stmt)) &&
+              (S && S->isAllocated()) && (SPrev && !SPrev->isAllocated()));
     }
 
     PathDiagnosticPiece *VisitNode(const ExplodedNode *N,
@@ -502,6 +523,7 @@ ProgramStateRef MallocChecker::FreeMemAux(CheckerContext &C,
                          "Try to free a memory block that has been released"));
       BugReport *R = new BugReport(*BT_DoubleFree, 
                                    BT_DoubleFree->getDescription(), N);
+      R->addRange(ArgExpr->getSourceRange());
       R->addVisitor(new MallocBugVisitor(Sym));
       C.EmitReport(R);
     }
@@ -861,11 +883,11 @@ void MallocChecker::checkPreStmt(const ReturnStmt *S, CheckerContext &C) const {
     return;
 
   // Check if we are returning freed memory.
-  if (checkUseAfterFree(Sym, C, S))
+  if (checkUseAfterFree(Sym, C, E))
     return;
 
   // Check if the symbol is escaping.
-  checkEscape(Sym, S, C);
+  checkEscape(Sym, E, C);
 }
 
 bool MallocChecker::checkUseAfterFree(SymbolRef Sym, CheckerContext &C,
@@ -1051,28 +1073,58 @@ MallocChecker::MallocBugVisitor::VisitNode(const ExplodedNode *N,
   if (!RS && !RSPrev)
     return 0;
 
-  // We expect the interesting locations be StmtPoints corresponding to call
-  // expressions. We do not support indirect function calls as of now.
-  const CallExpr *CE = 0;
-  if (isa<StmtPoint>(N->getLocation()))
-    CE = dyn_cast<CallExpr>(cast<StmtPoint>(N->getLocation()).getStmt());
-  if (!CE)
-    return 0;
-  const FunctionDecl *funDecl = CE->getDirectCallee();
-  if (!funDecl)
+  const Stmt *S = 0;
+  const char *Msg = 0;
+
+  // Retrieve the associated statement.
+  ProgramPoint ProgLoc = N->getLocation();
+  if (isa<StmtPoint>(ProgLoc))
+    S = cast<StmtPoint>(ProgLoc).getStmt();
+  // If an assumption was made on a branch, it should be caught
+  // here by looking at the state transition.
+  if (isa<BlockEdge>(ProgLoc)) {
+    const CFGBlock *srcBlk = cast<BlockEdge>(ProgLoc).getSrc();
+    S = srcBlk->getTerminator();
+  }
+  if (!S)
     return 0;
 
   // Find out if this is an interesting point and what is the kind.
-  const char *Msg = 0;
-  if (isAllocated(RS, RSPrev))
-    Msg = "Memory is allocated here";
-  else if (isReleased(RS, RSPrev))
-    Msg = "Memory is released here";
+  if (Mode == Normal) {
+    if (isAllocated(RS, RSPrev, S))
+      Msg = "Memory is allocated";
+    else if (isReleased(RS, RSPrev, S))
+      Msg = "Memory is released";
+    else if (isReallocFailedCheck(RS, RSPrev, S)) {
+      Mode = ReallocationFailed;
+      Msg = "Reallocation failed";
+    }
+
+  // We are in a special mode if a reallocation failed later in the path.
+  } else if (Mode == ReallocationFailed) {
+    // Generate a special diagnostic for the first realloc we find.
+    if (!isAllocated(RS, RSPrev, S) && !isReleased(RS, RSPrev, S))
+      return 0;
+
+    // Check that the name of the function is realloc.
+    const CallExpr *CE = dyn_cast<CallExpr>(S);
+    if (!CE)
+      return 0;
+    const FunctionDecl *funDecl = CE->getDirectCallee();
+    if (!funDecl)
+      return 0;
+    StringRef FunName = funDecl->getName();
+    if (!(FunName.equals("realloc") || FunName.equals("reallocf")))
+      return 0;
+    Msg = "Attempt to reallocate memory";
+    Mode = Normal;
+  }
+
   if (!Msg)
     return 0;
 
   // Generate the extra diagnostic.
-  PathDiagnosticLocation Pos(CE, BRC.getSourceManager(),
+  PathDiagnosticLocation Pos(S, BRC.getSourceManager(),
                              N->getLocationContext());
   return new PathDiagnosticEventPiece(Pos, Msg);
 }
diff --git a/test/Analysis/malloc-plist.c b/test/Analysis/malloc-plist.c
index 8727bc26c6..2539a28e8b 100644
--- a/test/Analysis/malloc-plist.c
+++ b/test/Analysis/malloc-plist.c
@@ -2,6 +2,8 @@
 
 typedef __typeof(sizeof(int)) size_t;
 void *malloc(size_t);
+void free(void *);
+void *realloc(void *ptr, size_t size);
 
 void diagnosticTest(int in) {
     if (in > 5) {
@@ -17,12 +19,24 @@ void myArrayAllocation() {
     A[0] = 0;// expected-warning {{leak}}
 }
 
+void reallocDiagnostics() {
+    char * buf = malloc(100);
+    char * tmp;
+    tmp = (char*)realloc(buf, 0x1000000);
+    if (!tmp) {
+        return;// expected-warning {{leak}}
+    }
+    buf = tmp;
+    free(buf);
+}
+
 // CHECK: <?xml version="1.0" encoding="UTF-8"?>
 // CHECK: <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 // CHECK: <plist version="1.0">
 // CHECK: <dict>
 // CHECK:  <key>files</key>
 // CHECK:  <array>
+// CHECK:   <string>/Users/zaks/workspace/llvmgit/llvm/tools/clang/test/Analysis/malloc-plist.c</string>
 // CHECK:  </array>
 // CHECK:  <key>diagnostics</key>
 // CHECK:  <array>
@@ -37,12 +51,12 @@ void myArrayAllocation() {
 // CHECK:         <key>start</key>
 // CHECK:          <array>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>7</integer>
+// CHECK:            <key>line</key><integer>9</integer>
 // CHECK:            <key>col</key><integer>5</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>7</integer>
+// CHECK:            <key>line</key><integer>9</integer>
 // CHECK:            <key>col</key><integer>5</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
@@ -50,12 +64,12 @@ void myArrayAllocation() {
 // CHECK:         <key>end</key>
 // CHECK:          <array>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>7</integer>
+// CHECK:            <key>line</key><integer>9</integer>
 // CHECK:            <key>col</key><integer>9</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>7</integer>
+// CHECK:            <key>line</key><integer>9</integer>
 // CHECK:            <key>col</key><integer>9</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
@@ -67,7 +81,7 @@ void myArrayAllocation() {
 // CHECK:      <key>kind</key><string>event</string>
 // CHECK:      <key>location</key>
 // CHECK:      <dict>
-// CHECK:       <key>line</key><integer>7</integer>
+// CHECK:       <key>line</key><integer>9</integer>
 // CHECK:       <key>col</key><integer>9</integer>
 // CHECK:       <key>file</key><integer>0</integer>
 // CHECK:      </dict>
@@ -75,12 +89,12 @@ void myArrayAllocation() {
 // CHECK:      <array>
 // CHECK:        <array>
 // CHECK:         <dict>
-// CHECK:          <key>line</key><integer>7</integer>
+// CHECK:          <key>line</key><integer>9</integer>
 // CHECK:          <key>col</key><integer>9</integer>
 // CHECK:          <key>file</key><integer>0</integer>
 // CHECK:         </dict>
 // CHECK:         <dict>
-// CHECK:          <key>line</key><integer>7</integer>
+// CHECK:          <key>line</key><integer>9</integer>
 // CHECK:          <key>col</key><integer>14</integer>
 // CHECK:          <key>file</key><integer>0</integer>
 // CHECK:         </dict>
@@ -99,12 +113,12 @@ void myArrayAllocation() {
 // CHECK:         <key>start</key>
 // CHECK:          <array>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>7</integer>
+// CHECK:            <key>line</key><integer>9</integer>
 // CHECK:            <key>col</key><integer>9</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>7</integer>
+// CHECK:            <key>line</key><integer>9</integer>
 // CHECK:            <key>col</key><integer>9</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
@@ -112,12 +126,12 @@ void myArrayAllocation() {
 // CHECK:         <key>end</key>
 // CHECK:          <array>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>8</integer>
+// CHECK:            <key>line</key><integer>10</integer>
 // CHECK:            <key>col</key><integer>9</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>8</integer>
+// CHECK:            <key>line</key><integer>10</integer>
 // CHECK:            <key>col</key><integer>9</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
@@ -133,12 +147,12 @@ void myArrayAllocation() {
 // CHECK:         <key>start</key>
 // CHECK:          <array>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>8</integer>
+// CHECK:            <key>line</key><integer>10</integer>
 // CHECK:            <key>col</key><integer>9</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>8</integer>
+// CHECK:            <key>line</key><integer>10</integer>
 // CHECK:            <key>col</key><integer>9</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
@@ -146,12 +160,12 @@ void myArrayAllocation() {
 // CHECK:         <key>end</key>
 // CHECK:          <array>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>8</integer>
+// CHECK:            <key>line</key><integer>10</integer>
 // CHECK:            <key>col</key><integer>18</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>8</integer>
+// CHECK:            <key>line</key><integer>10</integer>
 // CHECK:            <key>col</key><integer>27</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
@@ -163,7 +177,7 @@ void myArrayAllocation() {
 // CHECK:      <key>kind</key><string>event</string>
 // CHECK:      <key>location</key>
 // CHECK:      <dict>
-// CHECK:       <key>line</key><integer>8</integer>
+// CHECK:       <key>line</key><integer>10</integer>
 // CHECK:       <key>col</key><integer>18</integer>
 // CHECK:       <key>file</key><integer>0</integer>
 // CHECK:      </dict>
@@ -171,21 +185,21 @@ void myArrayAllocation() {
 // CHECK:      <array>
 // CHECK:        <array>
 // CHECK:         <dict>
-// CHECK:          <key>line</key><integer>8</integer>
+// CHECK:          <key>line</key><integer>10</integer>
 // CHECK:          <key>col</key><integer>18</integer>
 // CHECK:          <key>file</key><integer>0</integer>
 // CHECK:         </dict>
 // CHECK:         <dict>
-// CHECK:          <key>line</key><integer>8</integer>
+// CHECK:          <key>line</key><integer>10</integer>
 // CHECK:          <key>col</key><integer>27</integer>
 // CHECK:          <key>file</key><integer>0</integer>
 // CHECK:         </dict>
 // CHECK:        </array>
 // CHECK:      </array>
 // CHECK:      <key>extended_message</key>
-// CHECK:      <string>Memory is allocated here</string>
+// CHECK:      <string>Memory is allocated</string>
 // CHECK:      <key>message</key>
-// CHECK: <string>Memory is allocated here</string>
+// CHECK: <string>Memory is allocated</string>
 // CHECK:     </dict>
 // CHECK:     <dict>
 // CHECK:      <key>kind</key><string>control</string>
@@ -195,12 +209,12 @@ void myArrayAllocation() {
 // CHECK:         <key>start</key>
 // CHECK:          <array>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>8</integer>
+// CHECK:            <key>line</key><integer>10</integer>
 // CHECK:            <key>col</key><integer>18</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>8</integer>
+// CHECK:            <key>line</key><integer>10</integer>
 // CHECK:            <key>col</key><integer>27</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
@@ -208,12 +222,12 @@ void myArrayAllocation() {
 // CHECK:         <key>end</key>
 // CHECK:          <array>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>11</integer>
+// CHECK:            <key>line</key><integer>13</integer>
 // CHECK:            <key>col</key><integer>5</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>11</integer>
+// CHECK:            <key>line</key><integer>13</integer>
 // CHECK:            <key>col</key><integer>6</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
@@ -225,7 +239,7 @@ void myArrayAllocation() {
 // CHECK:      <key>kind</key><string>event</string>
 // CHECK:      <key>location</key>
 // CHECK:      <dict>
-// CHECK:       <key>line</key><integer>11</integer>
+// CHECK:       <key>line</key><integer>13</integer>
 // CHECK:       <key>col</key><integer>5</integer>
 // CHECK:       <key>file</key><integer>0</integer>
 // CHECK:      </dict>
@@ -233,12 +247,12 @@ void myArrayAllocation() {
 // CHECK:      <array>
 // CHECK:        <array>
 // CHECK:         <dict>
-// CHECK:          <key>line</key><integer>11</integer>
+// CHECK:          <key>line</key><integer>13</integer>
 // CHECK:          <key>col</key><integer>5</integer>
 // CHECK:          <key>file</key><integer>0</integer>
 // CHECK:         </dict>
 // CHECK:         <dict>
-// CHECK:          <key>line</key><integer>11</integer>
+// CHECK:          <key>line</key><integer>13</integer>
 // CHECK:          <key>col</key><integer>6</integer>
 // CHECK:          <key>file</key><integer>0</integer>
 // CHECK:         </dict>
@@ -255,7 +269,7 @@ void myArrayAllocation() {
 // CHECK:    <key>type</key><string>Memory leak</string>
 // CHECK:   <key>location</key>
 // CHECK:   <dict>
-// CHECK:    <key>line</key><integer>11</integer>
+// CHECK:    <key>line</key><integer>13</integer>
 // CHECK:    <key>col</key><integer>5</integer>
 // CHECK:    <key>file</key><integer>0</integer>
 // CHECK:   </dict>
@@ -271,12 +285,12 @@ void myArrayAllocation() {
 // CHECK:         <key>start</key>
 // CHECK:          <array>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>15</integer>
+// CHECK:            <key>line</key><integer>17</integer>
 // CHECK:            <key>col</key><integer>5</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>15</integer>
+// CHECK:            <key>line</key><integer>17</integer>
 // CHECK:            <key>col</key><integer>5</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
@@ -284,12 +298,12 @@ void myArrayAllocation() {
 // CHECK:         <key>end</key>
 // CHECK:          <array>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>16</integer>
+// CHECK:            <key>line</key><integer>18</integer>
 // CHECK:            <key>col</key><integer>5</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>16</integer>
+// CHECK:            <key>line</key><integer>18</integer>
 // CHECK:            <key>col</key><integer>5</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
@@ -305,12 +319,12 @@ void myArrayAllocation() {
 // CHECK:         <key>start</key>
 // CHECK:          <array>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>16</integer>
+// CHECK:            <key>line</key><integer>18</integer>
 // CHECK:            <key>col</key><integer>5</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>16</integer>
+// CHECK:            <key>line</key><integer>18</integer>
 // CHECK:            <key>col</key><integer>5</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
@@ -318,12 +332,12 @@ void myArrayAllocation() {
 // CHECK:         <key>end</key>
 // CHECK:          <array>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>16</integer>
+// CHECK:            <key>line</key><integer>18</integer>
 // CHECK:            <key>col</key><integer>9</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>16</integer>
+// CHECK:            <key>line</key><integer>18</integer>
 // CHECK:            <key>col</key><integer>30</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
@@ -335,7 +349,7 @@ void myArrayAllocation() {
 // CHECK:      <key>kind</key><string>event</string>
 // CHECK:      <key>location</key>
 // CHECK:      <dict>
-// CHECK:       <key>line</key><integer>16</integer>
+// CHECK:       <key>line</key><integer>18</integer>
 // CHECK:       <key>col</key><integer>9</integer>
 // CHECK:       <key>file</key><integer>0</integer>
 // CHECK:      </dict>
@@ -343,21 +357,21 @@ void myArrayAllocation() {
 // CHECK:      <array>
 // CHECK:        <array>
 // CHECK:         <dict>
-// CHECK:          <key>line</key><integer>16</integer>
+// CHECK:          <key>line</key><integer>18</integer>
 // CHECK:          <key>col</key><integer>9</integer>
 // CHECK:          <key>file</key><integer>0</integer>
 // CHECK:         </dict>
 // CHECK:         <dict>
-// CHECK:          <key>line</key><integer>16</integer>
+// CHECK:          <key>line</key><integer>18</integer>
 // CHECK:          <key>col</key><integer>30</integer>
 // CHECK:          <key>file</key><integer>0</integer>
 // CHECK:         </dict>
 // CHECK:        </array>
 // CHECK:      </array>
 // CHECK:      <key>extended_message</key>
-// CHECK:      <string>Memory is allocated here</string>
+// CHECK:      <string>Memory is allocated</string>
 // CHECK:      <key>message</key>
-// CHECK: <string>Memory is allocated here</string>
+// CHECK: <string>Memory is allocated</string>
 // CHECK:     </dict>
 // CHECK:     <dict>
 // CHECK:      <key>kind</key><string>control</string>
@@ -367,12 +381,12 @@ void myArrayAllocation() {
 // CHECK:         <key>start</key>
 // CHECK:          <array>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>16</integer>
+// CHECK:            <key>line</key><integer>18</integer>
 // CHECK:            <key>col</key><integer>9</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>16</integer>
+// CHECK:            <key>line</key><integer>18</integer>
 // CHECK:            <key>col</key><integer>30</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
@@ -380,12 +394,12 @@ void myArrayAllocation() {
 // CHECK:         <key>end</key>
 // CHECK:          <array>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>18</integer>
+// CHECK:            <key>line</key><integer>20</integer>
 // CHECK:            <key>col</key><integer>1</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
 // CHECK:           <dict>
-// CHECK:            <key>line</key><integer>18</integer>
+// CHECK:            <key>line</key><integer>20</integer>
 // CHECK:            <key>col</key><integer>1</integer>
 // CHECK:            <key>file</key><integer>0</integer>
 // CHECK:           </dict>
@@ -397,7 +411,7 @@ void myArrayAllocation() {
 // CHECK:      <key>kind</key><string>event</string>
 // CHECK:      <key>location</key>
 // CHECK:      <dict>
-// CHECK:       <key>line</key><integer>18</integer>
+// CHECK:       <key>line</key><integer>20</integer>
 // CHECK:       <key>col</key><integer>1</integer>
 // CHECK:       <key>file</key><integer>0</integer>
 // CHECK:      </dict>
@@ -412,11 +426,369 @@ void myArrayAllocation() {
 // CHECK:    <key>type</key><string>Memory leak</string>
 // CHECK:   <key>location</key>
 // CHECK:   <dict>
-// CHECK:    <key>line</key><integer>18</integer>
+// CHECK:    <key>line</key><integer>20</integer>
 // CHECK:    <key>col</key><integer>1</integer>
 // CHECK:    <key>file</key><integer>0</integer>
 // CHECK:   </dict>
 // CHECK:   </dict>
+// CHECK:   <dict>
+// CHECK:    <key>path</key>
+// CHECK:    <array>
+// CHECK:     <dict>
+// CHECK:      <key>kind</key><string>control</string>
+// CHECK:      <key>edges</key>
+// CHECK:       <array>
+// CHECK:        <dict>
+// CHECK:         <key>start</key>
+// CHECK:          <array>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>23</integer>
+// CHECK:            <key>col</key><integer>5</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>23</integer>
+// CHECK:            <key>col</key><integer>5</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:          </array>
+// CHECK:         <key>end</key>
+// CHECK:          <array>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>23</integer>
+// CHECK:            <key>col</key><integer>18</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>23</integer>
+// CHECK:            <key>col</key><integer>28</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:          </array>
+// CHECK:        </dict>
+// CHECK:       </array>
+// CHECK:     </dict>
+// CHECK:     <dict>
+// CHECK:      <key>kind</key><string>event</string>
+// CHECK:      <key>location</key>
+// CHECK:      <dict>
+// CHECK:       <key>line</key><integer>23</integer>
+// CHECK:       <key>col</key><integer>18</integer>
+// CHECK:       <key>file</key><integer>0</integer>
+// CHECK:      </dict>
+// CHECK:      <key>ranges</key>
+// CHECK:      <array>
+// CHECK:        <array>
+// CHECK:         <dict>
+// CHECK:          <key>line</key><integer>23</integer>
+// CHECK:          <key>col</key><integer>18</integer>
+// CHECK:          <key>file</key><integer>0</integer>
+// CHECK:         </dict>
+// CHECK:         <dict>
+// CHECK:          <key>line</key><integer>23</integer>
+// CHECK:          <key>col</key><integer>28</integer>
+// CHECK:          <key>file</key><integer>0</integer>
+// CHECK:         </dict>
+// CHECK:        </array>
+// CHECK:      </array>
+// CHECK:      <key>extended_message</key>
+// CHECK:      <string>Memory is allocated</string>
+// CHECK:      <key>message</key>
+// CHECK: <string>Memory is allocated</string>
+// CHECK:     </dict>
+// CHECK:     <dict>
+// CHECK:      <key>kind</key><string>control</string>
+// CHECK:      <key>edges</key>
+// CHECK:       <array>
+// CHECK:        <dict>
+// CHECK:         <key>start</key>
+// CHECK:          <array>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>23</integer>
+// CHECK:            <key>col</key><integer>18</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>23</integer>
+// CHECK:            <key>col</key><integer>28</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:          </array>
+// CHECK:         <key>end</key>
+// CHECK:          <array>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>25</integer>
+// CHECK:            <key>col</key><integer>5</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>25</integer>
+// CHECK:            <key>col</key><integer>5</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:          </array>
+// CHECK:        </dict>
+// CHECK:       </array>
+// CHECK:     </dict>
+// CHECK:     <dict>
+// CHECK:      <key>kind</key><string>control</string>
+// CHECK:      <key>edges</key>
+// CHECK:       <array>
+// CHECK:        <dict>
+// CHECK:         <key>start</key>
+// CHECK:          <array>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>25</integer>
+// CHECK:            <key>col</key><integer>5</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>25</integer>
+// CHECK:            <key>col</key><integer>5</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:          </array>
+// CHECK:         <key>end</key>
+// CHECK:          <array>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>25</integer>
+// CHECK:            <key>col</key><integer>18</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>25</integer>
+// CHECK:            <key>col</key><integer>40</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:          </array>
+// CHECK:        </dict>
+// CHECK:       </array>
+// CHECK:     </dict>
+// CHECK:     <dict>
+// CHECK:      <key>kind</key><string>event</string>
+// CHECK:      <key>location</key>
+// CHECK:      <dict>
+// CHECK:       <key>line</key><integer>25</integer>
+// CHECK:       <key>col</key><integer>18</integer>
+// CHECK:       <key>file</key><integer>0</integer>
+// CHECK:      </dict>
+// CHECK:      <key>ranges</key>
+// CHECK:      <array>
+// CHECK:        <array>
+// CHECK:         <dict>
+// CHECK:          <key>line</key><integer>25</integer>
+// CHECK:          <key>col</key><integer>18</integer>
+// CHECK:          <key>file</key><integer>0</integer>
+// CHECK:         </dict>
+// CHECK:         <dict>
+// CHECK:          <key>line</key><integer>25</integer>
+// CHECK:          <key>col</key><integer>40</integer>
+// CHECK:          <key>file</key><integer>0</integer>
+// CHECK:         </dict>
+// CHECK:        </array>
+// CHECK:      </array>
+// CHECK:      <key>extended_message</key>
+// CHECK:      <string>Attempt to reallocate memory</string>
+// CHECK:      <key>message</key>
+// CHECK: <string>Attempt to reallocate memory</string>
+// CHECK:     </dict>
+// CHECK:     <dict>
+// CHECK:      <key>kind</key><string>control</string>
+// CHECK:      <key>edges</key>
+// CHECK:       <array>
+// CHECK:        <dict>
+// CHECK:         <key>start</key>
+// CHECK:          <array>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>25</integer>
+// CHECK:            <key>col</key><integer>18</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>25</integer>
+// CHECK:            <key>col</key><integer>40</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:          </array>
+// CHECK:         <key>end</key>
+// CHECK:          <array>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>26</integer>
+// CHECK:            <key>col</key><integer>5</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>26</integer>
+// CHECK:            <key>col</key><integer>6</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:          </array>
+// CHECK:        </dict>
+// CHECK:       </array>
+// CHECK:     </dict>
+// CHECK:     <dict>
+// CHECK:      <key>kind</key><string>event</string>
+// CHECK:      <key>location</key>
+// CHECK:      <dict>
+// CHECK:       <key>line</key><integer>26</integer>
+// CHECK:       <key>col</key><integer>5</integer>
+// CHECK:       <key>file</key><integer>0</integer>
+// CHECK:      </dict>
+// CHECK:      <key>ranges</key>
+// CHECK:      <array>
+// CHECK:        <array>
+// CHECK:         <dict>
+// CHECK:          <key>line</key><integer>26</integer>
+// CHECK:          <key>col</key><integer>5</integer>
+// CHECK:          <key>file</key><integer>0</integer>
+// CHECK:         </dict>
+// CHECK:         <dict>
+// CHECK:          <key>line</key><integer>26</integer>
+// CHECK:          <key>col</key><integer>6</integer>
+// CHECK:          <key>file</key><integer>0</integer>
+// CHECK:         </dict>
+// CHECK:        </array>
+// CHECK:      </array>
+// CHECK:      <key>extended_message</key>
+// CHECK:      <string>Reallocation failed</string>
+// CHECK:      <key>message</key>
+// CHECK: <string>Reallocation failed</string>
+// CHECK:     </dict>
+// CHECK:     <dict>
+// CHECK:      <key>kind</key><string>control</string>
+// CHECK:      <key>edges</key>
+// CHECK:       <array>
+// CHECK:        <dict>
+// CHECK:         <key>start</key>
+// CHECK:          <array>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>26</integer>
+// CHECK:            <key>col</key><integer>5</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>26</integer>
+// CHECK:            <key>col</key><integer>6</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:          </array>
+// CHECK:         <key>end</key>
+// CHECK:          <array>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>26</integer>
+// CHECK:            <key>col</key><integer>9</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>26</integer>
+// CHECK:            <key>col</key><integer>12</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:          </array>
+// CHECK:        </dict>
+// CHECK:       </array>
+// CHECK:     </dict>
+// CHECK:     <dict>
+// CHECK:      <key>kind</key><string>event</string>
+// CHECK:      <key>location</key>
+// CHECK:      <dict>
+// CHECK:       <key>line</key><integer>26</integer>
+// CHECK:       <key>col</key><integer>9</integer>
+// CHECK:       <key>file</key><integer>0</integer>
+// CHECK:      </dict>
+// CHECK:      <key>ranges</key>
+// CHECK:      <array>
+// CHECK:        <array>
+// CHECK:         <dict>
+// CHECK:          <key>line</key><integer>26</integer>
+// CHECK:          <key>col</key><integer>9</integer>
+// CHECK:          <key>file</key><integer>0</integer>
+// CHECK:         </dict>
+// CHECK:         <dict>
+// CHECK:          <key>line</key><integer>26</integer>
+// CHECK:          <key>col</key><integer>12</integer>
+// CHECK:          <key>file</key><integer>0</integer>
+// CHECK:         </dict>
+// CHECK:        </array>
+// CHECK:      </array>
+// CHECK:      <key>extended_message</key>
+// CHECK:      <string>Assuming &apos;tmp&apos; is null</string>
+// CHECK:      <key>message</key>
+// CHECK: <string>Assuming &apos;tmp&apos; is null</string>
+// CHECK:     </dict>
+// CHECK:     <dict>
+// CHECK:      <key>kind</key><string>control</string>
+// CHECK:      <key>edges</key>
+// CHECK:       <array>
+// CHECK:        <dict>
+// CHECK:         <key>start</key>
+// CHECK:          <array>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>26</integer>
+// CHECK:            <key>col</key><integer>9</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>26</integer>
+// CHECK:            <key>col</key><integer>12</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:          </array>
+// CHECK:         <key>end</key>
+// CHECK:          <array>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>27</integer>
+// CHECK:            <key>col</key><integer>9</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:           <dict>
+// CHECK:            <key>line</key><integer>27</integer>
+// CHECK:            <key>col</key><integer>14</integer>
+// CHECK:            <key>file</key><integer>0</integer>
+// CHECK:           </dict>
+// CHECK:          </array>
+// CHECK:        </dict>
+// CHECK:       </array>
+// CHECK:     </dict>
+// CHECK:     <dict>
+// CHECK:      <key>kind</key><string>event</string>
+// CHECK:      <key>location</key>
+// CHECK:      <dict>
+// CHECK:       <key>line</key><integer>27</integer>
+// CHECK:       <key>col</key><integer>9</integer>
+// CHECK:       <key>file</key><integer>0</integer>
+// CHECK:      </dict>
+// CHECK:      <key>ranges</key>
+// CHECK:      <array>
+// CHECK:        <array>
+// CHECK:         <dict>
+// CHECK:          <key>line</key><integer>27</integer>
+// CHECK:          <key>col</key><integer>9</integer>
+// CHECK:          <key>file</key><integer>0</integer>
+// CHECK:         </dict>
+// CHECK:         <dict>
+// CHECK:          <key>line</key><integer>27</integer>
+// CHECK:          <key>col</key><integer>14</integer>
+// CHECK:          <key>file</key><integer>0</integer>
+// CHECK:         </dict>
+// CHECK:        </array>
+// CHECK:      </array>
+// CHECK:      <key>extended_message</key>
+// CHECK:      <string>Allocated memory never released. Potential memory leak</string>
+// CHECK:      <key>message</key>
+// CHECK: <string>Allocated memory never released. Potential memory leak</string>
+// CHECK:     </dict>
+// CHECK:    </array>
+// CHECK:    <key>description</key><string>Allocated memory never released. Potential memory leak</string>
+// CHECK:    <key>category</key><string>Logic error</string>
+// CHECK:    <key>type</key><string>Memory leak</string>
+// CHECK:   <key>location</key>
+// CHECK:   <dict>
+// CHECK:    <key>line</key><integer>27</integer>
+// CHECK:    <key>col</key><integer>9</integer>
+// CHECK:    <key>file</key><integer>0</integer>
+// CHECK:   </dict>
+// CHECK:   </dict>
 // CHECK:  </array>
 // CHECK: </dict>
 // CHECK: </plist>