[PATCH] D154875: [MicrosoftDemangle] fix warn-trailing false positive

[Nick Desaulniers via Phabricator via llvm-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG6641d2b7df35: [MicrosoftDemangle] fix warn-trailing false positive (authored by nickdesaulniers).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D154875/new/

https://reviews.llvm.org/D154875

Files:
  llvm/lib/Demangle/MicrosoftDemangle.cpp
  llvm/test/Demangle/warn-trailing.test


Index: llvm/test/Demangle/warn-trailing.test
===================================================================
--- llvm/test/Demangle/warn-trailing.test
+++ llvm/test/Demangle/warn-trailing.test
@@ -4,3 +4,8 @@
 ; CHECK: ?x@@3HAasdf
 ; CHECK-NEXT: int x
 ; CHECK-NEXT: warning: trailing characters: asdf
+
+.?AVNet@@
+; CHECK: .?AVNet@@
+; CHECK-NEXT: class Net `RTTI Type Descriptor Name'
+; CHECK-NOT: warning: trailing characters
Index: llvm/lib/Demangle/MicrosoftDemangle.cpp
===================================================================
--- llvm/lib/Demangle/MicrosoftDemangle.cpp
+++ llvm/lib/Demangle/MicrosoftDemangle.cpp
@@ -2404,7 +2404,8 @@
   std::string_view Name{MangledName};
   SymbolNode *AST = D.parse(Name);
   if (!D.Error && NMangled)
-    *NMangled = Name.empty() ? 0 : &*Name.begin() - &*MangledName.begin();
+    *NMangled = Name.empty() ? MangledName.size()
+                             : &*Name.begin() - &*MangledName.begin();
 
   if (Flags & MSDF_DumpBackrefs)
     D.dumpBackReferences();


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