Add static cast to unsigned char whenever a character classification function is called with a signed char argument, in order to avoid assertions in Windows Debug configuration.

llvm-svn: 175006

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp b/llvm/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp
index 2ec85918c1c..99479a46a88 100644
--- a/llvm/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp
+++ b/llvm/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp
@@ -450,7 +450,7 @@ static bool ParseBlock(BitstreamCursor &Stream, unsigned BlockID,
         outs() << " blob data = ";
         bool BlobIsPrintable = true;
         for (unsigned i = 0, e = Blob.size(); i != e; ++i)
-          if (!isprint(Blob[i])) {
+          if (!isprint(static_cast<unsigned char>(Blob[i]))) {
             BlobIsPrintable = false;
             break;
           }