pecoff implementation stripping underscores fails with c++ stacktraces
Plericromon opened this issue · comments
The following line causes underscores to be stripped from function names:
Line 439 in 5a99ff7
For example boost::stacktrace will run a demangle on the returned symbols from libbacktrace. Without the leading underscore function names will not be demangled. See an example:
Function name in COFF symbol table:
_ZN3foo3Bar6fooBarEv
Function name returned from backtrace_syminfo with COFF search function:
ZN3foo3Bar6fooBarEv
While the former can be demangled to foo::Bar::fooBar() the latter cant.
What is the reason for stripping the leading underscore? Would it be possible to avoid this?
Why are you asking here?
Seems as though this question would be better sent to a GCC forum of some sort. Looking at the GCC source I see that this line was added in the following commit:
The person who added this code might have some insights here.
I check this repository out, compile it, use it, a file that is part of this repository does not perform the way I think it should, so I create an issue in that repository. This is pretty much why I am asking here?
Is this repository here not maintained? Or what is the relationship between the files here and on the gcc mirror?
This repository is a stand-alone copy of a library that lives in the GCC sources.
I believe the problem is that 32-bit x86 PE uses a leading underscore bug 64-bit x86_64 PE does not. Are you using 64-bit PE?
Ah, got it. Yes, I am on x86_64, here the _ removal is causing issues. What would be the appropriate place to raise the issue if its not here?
You could file a bug report against gcc/libbacktace at https://gcc.gnu.org/bugzilla.
This is most likely fixed by 2f5efbf.