Check length of string before we walk off the end of it.
Thanks, Chris.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36155 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AsmParser/llvmAsmParser.y b/lib/AsmParser/llvmAsmParser.y
index 5544008..263ef4c 100644
--- a/lib/AsmParser/llvmAsmParser.y
+++ b/lib/AsmParser/llvmAsmParser.y
@@ -2823,9 +2823,9 @@
// Check for call to invalid intrinsic to avoid crashing later.
if (Function *theF = dyn_cast<Function>(V)) {
- if (theF->hasName() &&
- 0 == strncmp(theF->getValueName()->getKeyData(), "llvm.", 5) &&
- !theF->getIntrinsicID(true))
+ if (theF->hasName() && (strlen(theF->getValueName()->getKeyData()) >= 5)&&
+ (0 == strncmp(theF->getValueName()->getKeyData(), "llvm.", 5)) &&
+ !theF->getIntrinsicID(true))
GEN_ERROR("Call to invalid LLVM intrinsic function '" +
theF->getName() + "'");
}