Demangler patch committed: Fix constructor names with ABI tags

[Ian Lance Taylor <iant at golang dot org>]

The symbol _ZNSt8ios_base7failureB5cxx11C1EPKcRKSt10error_code, which
appears in libstdc++, was being demangled as

std::ios_base::failure[abi:cxx11]::cxx11(char const*, std::error_code const&)

That is clearly incorrect: std::ios_base::failure does not have a
method cxx11, and anyhow if you look closely at the mangled name you
will see that it is supposed to be a constructor.  This patch fixes
the demangler to generate the correct demangling, namely

std::ios_base::failure[abi:cxx11]::failure(char const*, std::error_code const&)

Bootstrapped and ran libiberty and libstdc++-v3 tests on
x86_64-unknown-linux-gnu.  Committed to mainline.

Ian

2015-08-15  Ian Lance Taylor  <iant@google.com>

* cp-demangle.c (d_abi_tags): Preserve di->last_name across any
ABI tags.

Attachment: patch.txt
Description: Text document