Don't use SourceLineCache in getColumnNumber if LastLineNoResult is past the end of the cache. Fixes PR14570.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@170281 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/SourceManager.cpp b/lib/Basic/SourceManager.cpp
index 0c00865..f1965e7 100644
--- a/lib/Basic/SourceManager.cpp
+++ b/lib/Basic/SourceManager.cpp
@@ -1032,7 +1032,8 @@
// See if we just calculated the line number for this FilePos and can use
// that to lookup the start of the line instead of searching for it.
if (LastLineNoFileIDQuery == FID &&
- LastLineNoContentCache->SourceLineCache != 0) {
+ LastLineNoContentCache->SourceLineCache != 0 &&
+ LastLineNoResult < LastLineNoContentCache->NumLines) {
unsigned *SourceLineCache = LastLineNoContentCache->SourceLineCache;
unsigned LineStart = SourceLineCache[LastLineNoResult - 1];
unsigned LineEnd = SourceLineCache[LastLineNoResult];