diff options
| -rw-r--r-- | lib/VMCore/AsmWriter.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/VMCore/AsmWriter.cpp b/lib/VMCore/AsmWriter.cpp index 669d308b1a..aedb86b3ee 100644 --- a/lib/VMCore/AsmWriter.cpp +++ b/lib/VMCore/AsmWriter.cpp @@ -100,7 +100,11 @@ static void PrintLLVMName(raw_ostream &OS, StringRef Name, PrefixType Prefix) { bool NeedsQuotes = isdigit(Name[0]); if (!NeedsQuotes) { for (unsigned i = 0, e = Name.size(); i != e; ++i) { - char C = Name[i]; + // By making this unsigned, the value passed in to isalnum will always be + // in the range 0-255. This is important when building with MSVC because + // its implementation will assert. This situation can arise when dealing + // with UTF-8 multibyte characters. + unsigned char C = Name[i]; if (!isalnum(C) && C != '-' && C != '.' && C != '_') { NeedsQuotes = true; break; |