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-rw-r--r--lib/Frontend/TextDiagnostic.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Frontend/TextDiagnostic.cpp b/lib/Frontend/TextDiagnostic.cpp
index 598238860d..bbd96b91f5 100644
--- a/lib/Frontend/TextDiagnostic.cpp
+++ b/lib/Frontend/TextDiagnostic.cpp
@@ -127,7 +127,7 @@ printableTextForNextCharacter(StringRef SourceLine, size_t *i,
unsigned char const *begin, *end;
begin = reinterpret_cast<unsigned char const *>(&*(SourceLine.begin() + *i));
- end = begin + SourceLine.size();
+ end = begin + (SourceLine.size() - *i);
if (isLegalUTF8Sequence(begin, end)) {
UTF32 c;