diff options
Diffstat (limited to 'clang/lib/Basic/SourceManager.cpp')
| -rw-r--r-- | clang/lib/Basic/SourceManager.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/clang/lib/Basic/SourceManager.cpp b/clang/lib/Basic/SourceManager.cpp index 0a76c78..0f19440 100644 --- a/clang/lib/Basic/SourceManager.cpp +++ b/clang/lib/Basic/SourceManager.cpp @@ -1936,6 +1936,11 @@ SourceManager::getMacroArgExpandedLocation(SourceLocation Loc) const { assert(!MacroArgsCache->empty()); MacroArgsMap::iterator I = MacroArgsCache->upper_bound(Offset); + // In case every element in MacroArgsCache is greater than Offset we can't + // decrement the iterator. + if (I == MacroArgsCache->begin()) + return Loc; + --I; unsigned MacroArgBeginOffs = I->first; |