More warnings for unused expressions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77763 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Sema/SemaStmt.cpp b/lib/Sema/SemaStmt.cpp
index f00d60089b23416036527a6f02b591f5f71205c8..65611f2e5850998d52b82710a20ee72b77e9ee2c 100644 (file)
--- a/lib/Sema/SemaStmt.cpp
+++ b/lib/Sema/SemaStmt.cpp
@@ -649,6 +649,8 @@ Sema::ActOnForStmt(SourceLocation ForLoc, SourceLocation LParenLoc,
         << SecondType << Second->getSourceRange());
   }
   
+  DiagnoseUnusedExprResult(First);
+  DiagnoseUnusedExprResult(Third);
   DiagnoseUnusedExprResult(Body);
 
   first.release();

diff --git a/test/Sema/unused-expr.c b/test/Sema/unused-expr.c
index c55afeadc45a78640d2fe12e262e21034e8b057a..8b5d15612627b968441c1376f54f8cf1eadfe5f1 100644 (file)
--- a/test/Sema/unused-expr.c
+++ b/test/Sema/unused-expr.c
@@ -67,6 +67,10 @@ void t4(int a) {
   
   for (;;)
     b == 5; // expected-warning{{expression result unused}}
+    
+  for (b == 1;;) {} // expected-warning{{expression result unused}}
+  for (;b == 1;) {}
+  for (;;b == 1) {} // expected-warning{{expression result unused}}
 }