[llvm] r351481 - [demangler] Ignore leading underscores if present

[Erik Pilkington via llvm-commits]

Author: epilk
Date: Thu Jan 17 13:37:36 2019
New Revision: 351481

URL: http://llvm.org/viewvc/llvm-project?rev=351481&view=rev
Log:
[demangler] Ignore leading underscores if present

On MacOS, symbols start with a leading underscore, so just parse and
ignore it if present.

Modified:
    llvm/trunk/include/llvm/Demangle/ItaniumDemangle.h

Modified: llvm/trunk/include/llvm/Demangle/ItaniumDemangle.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Demangle/ItaniumDemangle.h?rev=351481&r1=351480&r2=351481&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Demangle/ItaniumDemangle.h (original)
+++ llvm/trunk/include/llvm/Demangle/ItaniumDemangle.h Thu Jan 17 13:37:36 2019
@@ -5143,7 +5143,7 @@ AbstractManglingParser<Derived, Alloc>::
 // extension      ::= ___Z <encoding> _block_invoke_<decimal-digit>+
 template <typename Derived, typename Alloc>
 Node *AbstractManglingParser<Derived, Alloc>::parse() {
-  if (consumeIf("_Z")) {
+  if (consumeIf("_Z") || consumeIf("__Z")) {
     Node *Encoding = getDerived().parseEncoding();
     if (Encoding == nullptr)
       return nullptr;
@@ -5156,7 +5156,7 @@ Node *AbstractManglingParser<Derived, Al
     return Encoding;
   }
 
-  if (consumeIf("___Z")) {
+  if (consumeIf("___Z") || consumeIf("____Z")) {
     Node *Encoding = getDerived().parseEncoding();
     if (Encoding == nullptr || !consumeIf("_block_invoke"))
       return nullptr;