From: Douglas Gregor <dgregor@apple.com>
Date: Fri, 10 Dec 2010 07:23:11 +0000 (+0000)
Subject: In clang_getCursor(), don't override a preprocessing cursor within
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=85fe1560b061b5f93a52dbd07cddd6e808854710;p=clang

In clang_getCursor(), don't override a preprocessing cursor within
another preprocessing cursor, since we want the outermost one.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121470 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/test/Index/c-index-getCursor-pp.c b/test/Index/c-index-getCursor-pp.c
index 2393965c28..8f986912cd 100644
--- a/test/Index/c-index-getCursor-pp.c
+++ b/test/Index/c-index-getCursor-pp.c
@@ -8,6 +8,11 @@ void OBSCURE(func)(int x) {
 
 #include "a.h"
 
+#define A(X) X
+#define B(X) A(X)
+
+B(int x);
+
 // RUN: c-index-test -cursor-at=%s:1:11 -I%S/Inputs %s | FileCheck -check-prefix=CHECK-1 %s
 // CHECK-1: macro definition=OBSCURE
 // RUN: c-index-test -cursor-at=%s:2:14 -I%S/Inputs %s | FileCheck -check-prefix=CHECK-2 %s
@@ -20,6 +25,8 @@ void OBSCURE(func)(int x) {
 // CHECK-5: macro instantiation=DECORATION:2:9
 // RUN: c-index-test -cursor-at=%s:9:10 -I%S/Inputs %s | FileCheck -check-prefix=CHECK-6 %s
 // CHECK-6: inclusion directive=a.h
+// RUN: c-index-test -cursor-at=%s:14:1 -I%S/Inputs %s | FileCheck -check-prefix=CHECK-7 %s
+// CHECK-7: macro instantiation=B:12:9
 
 // Same tests, but with "editing" optimizations
 // RUN: env CINDEXTEST_EDITING=1 c-index-test -cursor-at=%s:1:11 -I%S/Inputs %s | FileCheck -check-prefix=CHECK-1 %s
diff --git a/tools/libclang/CIndex.cpp b/tools/libclang/CIndex.cpp
index a74a7a9895..d9aec47558 100644
--- a/tools/libclang/CIndex.cpp
+++ b/tools/libclang/CIndex.cpp
@@ -3069,6 +3069,12 @@ enum CXChildVisitResult GetCursorVisitor(CXCursor cursor,
       cursor.kind == CXCursor_TypeRef)
     return CXChildVisit_Recurse;
   
+  // Don't override a preprocessing cursor with another preprocessing
+  // cursor; we want the outermost preprocessing cursor.
+  if (clang_isPreprocessing(cursor.kind) &&
+      clang_isPreprocessing(BestCursor->kind))
+    return CXChildVisit_Recurse;
+  
   *BestCursor = cursor;
   return CXChildVisit_Recurse;
 }