https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83917
--- Comment #3 from Daniel Santos <daniel.santos at pobox dot com> --- (In reply to Richard Biener from comment #1) > Testcase would be nice. *sigh* Yes, I've seen that there are tests that run gdb through expect, I haven't learned how to use that yet. (In reply to Jakub Jelinek from comment #2) > So, is this about debug info (which I believe shouldn't be needed), or > missing unwind info? This is only about the debug > I presume the mingw unwind info isn't done through .cfi_* directives, so > would need to be written by hand. This doesn't really target Windows at all, but rather Wine. In fact, it is disabled on Windows because the SEH code in gcc/config/i386/winnt.c doesn't support REG_CFA_EXPRESSION. That said, I haven't actually *tested* this with C++, which is bad except that I am not currently aware of any such use-case -- Wine is almost entirely written in C. None the less, it would seem some C++ tests are in order ... that might be an understatement... > How hard is that, and is this really a > regression, those snippets didn't exist before? True, these stubs did not exist before, but the user always had the ability to step through such functions and get a valid backtrace from the debugger, so I would think it to be a regression.
