llvm-undname: Fix an assert-on-invalid
Found by oss-fuzz, fixes issues 12428 and 12429 on oss-fuzz.
Differential Revision: https://reviews.llvm.org/D60204
llvm-svn: 357647
diff --git a/llvm/lib/Demangle/MicrosoftDemangle.cpp b/llvm/lib/Demangle/MicrosoftDemangle.cpp
index b8e39c4..b4e5cef 100644
--- a/llvm/lib/Demangle/MicrosoftDemangle.cpp
+++ b/llvm/lib/Demangle/MicrosoftDemangle.cpp
@@ -466,6 +466,10 @@
Demangler::demangleFunctionIdentifierCode(StringView &MangledName) {
assert(MangledName.startsWith('?'));
MangledName = MangledName.dropFront();
+ if (MangledName.empty()) {
+ Error = true;
+ return nullptr;
+ }
if (MangledName.consumeFront("__"))
return demangleFunctionIdentifierCode(
@@ -637,6 +641,7 @@
IdentifierNode *
Demangler::demangleFunctionIdentifierCode(StringView &MangledName,
FunctionIdentifierCodeGroup Group) {
+ assert(!MangledName.empty());
switch (Group) {
case FunctionIdentifierCodeGroup::Basic:
switch (char CH = MangledName.popFront()) {