Re: [Libunwind-devel] [PATCH 6/8] Recognise and unwind through PLT.

[Arun Sharma]

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On Tue, Apr 27, 2010 at 2:03 AM, Lassi Tuura <address@hidden> wrote:

The good news is that the failures are fixed by the frame-chain walk patch:

 http://thread.gmane.org/gmane.comp.lib.unwind.devel/633

Actually, I get failures even after applying this patch. Ironically, I traced them to the lack of unwind info in src/x86_64/getcontext.S

(gdb) bt

#0  do_backtrace (may_print=1, get_proc_name=1) at test-async-sig.c:113

#1  0x0000000000400f01 in sighandler (signal=<value optimized out>) at test-async-sig.c:136

#2  <signal handler called>

#3  _Ux86_64_getcontext () at x86_64/getcontext.S:65

#4  0x0000000000400c5f in do_backtrace (may_print=0, get_proc_name=0) at test-async-sig.c:80

#5  0x00000000004010bf in main (argc=<value optimized out>, argv=<value optimized out>) at test-async-sig.c:182

Your changes are merely exposing an existing bug, not causing them.

 -Arun