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-rw-r--r--clang/Sema/SemaChecking.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/clang/Sema/SemaChecking.cpp b/clang/Sema/SemaChecking.cpp
index cc682af99f0..d5445a17eea 100644
--- a/clang/Sema/SemaChecking.cpp
+++ b/clang/Sema/SemaChecking.cpp
@@ -365,7 +365,8 @@ Sema::CheckPrintfArguments(Expr *Fn,
LastConversionIdx+1);
Diag(Loc, diag::warn_printf_invalid_conversion,
- std::string(Str+LastConversionIdx, Str+StrIdx),
+ std::string(Str+LastConversionIdx,
+ Str+std::min(LastConversionIdx+2, StrLen)),
Fn->getSourceRange());
return;
}
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