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authorArgyrios Kyrtzidis <akyrtzi@gmail.com>2010-12-24 02:53:53 +0000
committerArgyrios Kyrtzidis <akyrtzi@gmail.com>2010-12-24 02:53:53 +0000
commitee933e1cc2718bd829c4649d060fc9f686005990 (patch)
tree995931b45a0bda5087f4ee87e2b3050ba991edab /lib/Basic/SourceManager.cpp
parent7f040a9d817cd1c72b565e92abff473510bf9e1d (diff)
downloadclang-ee933e1cc2718bd829c4649d060fc9f686005990.tar.gz
Handle locations coming from macro instantiations properly in SourceManager::isBeforeInTranslationUnit().
Fixes rdar://8790245 and http://llvm.org/PR8821. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122536 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Basic/SourceManager.cpp')
-rw-r--r--lib/Basic/SourceManager.cpp7
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/Basic/SourceManager.cpp b/lib/Basic/SourceManager.cpp
index 54bdfd3166..409851f108 100644
--- a/lib/Basic/SourceManager.cpp
+++ b/lib/Basic/SourceManager.cpp
@@ -1198,6 +1198,13 @@ bool SourceManager::isBeforeInTranslationUnit(SourceLocation LHS,
if (LHS == RHS)
return false;
+ // If both locations are macro instantiations, the order of their offsets
+ // reflect the order that the tokens, pointed to by these locations, were
+ // instantiated (during parsing each token that is instantiated by a macro,
+ // expands the SLocEntries).
+ if (LHS.isMacroID() && RHS.isMacroID())
+ return LHS.getOffset() < RHS.getOffset();
+
std::pair<FileID, unsigned> LOffs = getDecomposedLoc(LHS);
std::pair<FileID, unsigned> ROffs = getDecomposedLoc(RHS);