llvm-undname: Fix an assert-on-invalid, found by oss-fuzz
llvm-svn: 358891
diff --git a/llvm/lib/Demangle/MicrosoftDemangle.cpp b/llvm/lib/Demangle/MicrosoftDemangle.cpp
index f9400b0..beb5169 100644
--- a/llvm/lib/Demangle/MicrosoftDemangle.cpp
+++ b/llvm/lib/Demangle/MicrosoftDemangle.cpp
@@ -1040,7 +1040,7 @@
uint8_t C1, C2;
C1 = demangleCharLiteral(MangledName);
- if (Error)
+ if (Error || MangledName.empty())
goto WCharLiteralError;
C2 = demangleCharLiteral(MangledName);
if (Error)
diff --git a/llvm/test/Demangle/invalid-manglings.test b/llvm/test/Demangle/invalid-manglings.test
index fb66c2b..d64ec4f 100644
--- a/llvm/test/Demangle/invalid-manglings.test
+++ b/llvm/test/Demangle/invalid-manglings.test
@@ -164,3 +164,8 @@
; CHECK-EMPTY:
; CHECK-NEXT: ??_C@_0601234567@abcdefghijklmnopqrtsuvwxyzABCDEFGHIJKLMNOPQRTSUVWXYZabcdefghijklmnopqrtsuvwxyzABCDEFGHIJKLMNOPQRTSUVWXYZabcdefghijklmnopqrtsuvwxyz
; CHECK-NEXT: error: Invalid mangled name
+
+??_C@_12@?z
+; CHECK-EMPTY:
+; CHECK-NEXT: ??_C@_12@?z
+; CHECK-NEXT: error: Invalid mangled name
