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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175006 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/IR/LLVMContext.cpp b/lib/IR/LLVMContext.cpp
index 8e2bbb7..b73cd03 100644
--- a/lib/IR/LLVMContext.cpp
+++ b/lib/IR/LLVMContext.cpp
@@ -130,12 +130,13 @@
if (MDName.empty())
return false;
- if (!std::isalpha(MDName[0]))
+ if (!std::isalpha(static_cast<unsigned char>(MDName[0])))
return false;
for (StringRef::iterator I = MDName.begin() + 1, E = MDName.end(); I != E;
++I) {
- if (!std::isalnum(*I) && *I != '_' && *I != '-' && *I != '.')
+ if (!std::isalnum(static_cast<unsigned char>(*I)) && *I != '_' &&
+ *I != '-' && *I != '.')
return false;
}
return true;