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Subject:	FW: Unfolding the stack
Date:	Mon, 12 Mar 2012 16:20:39 +0100
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From:	"Michel Bardiaux" <MBardiaux AT mediaxim DOT be>
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[snip]
> This is hard in C, and harder in code compiled by gcc [snip]

I know that, and am willing to accept the risk since any info is better
than none. I just wish for a more efficient mechanism than I am now
using.

> If you're using C++, [snip]

Nope.

> Alternatively, you could compile with -g and try to traverse the debug
info tables gdb uses to work > around everything nasty gcc does, but
there's no clean API there that I know of.

Since cygwin_stackdump does not dare to tread there...

> Out of curiosity, what is your library currently using to generate
backtraces? 

Well you just snipped it: pipe/fork/dup to catch the stderr of
cygwin_stackdump called in the forked process.

> There's a backtrace facility in glibc (man backtrace), but it's got a 
> long list of caveats as well, > including death by
-fomit-frame-pointer (it doesn't use any debug/unwind info emitted by
the compiler).

In what package? I have cygwin basics + gcc installed, and no backtrace
in any .h.


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