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-rw-r--r--llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 5085fd4bdab..50cd24ba822 100644
--- a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -681,7 +681,7 @@ static void printStringChar(raw_ostream &O, char C) {
O << "\\\"";
} else if (C == '\\') {
O << "\\\\";
- } else if (isprint(C)) {
+ } else if (isprint((unsigned char)C)) {
O << C;
} else {
switch(C) {
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