[Bug nscd/9750] nscd gc() segmentation fault by estimation failure of alloca()'s stack usage

["j-nomura at ce dot jp dot nec dot com" <sourceware-bugzilla at sourceware dot org>]

------- Additional Comments From j-nomura at ce dot jp dot nec dot com  2009-01-29 04:31 -------
Thank you for the fix on x86_64, but I confirmed the same problem occurs on i386
system.
(alloca() pads the extra 16 bytes on Fedora 9 i386, too.
 May also on other archs but I don't have machines to check with.)

Could you put a "%%esp" version of the stackinfo_get_sp/stackinfo_sub_sp macros
to sysdeps/i386, too?
http://sources.redhat.com/cgi-bin/cvsweb.cgi/libc/sysdeps/x86_64/stackinfo.h.diff?r1=1.1&r2=1.2&cvsroot=glibc

Also, the following fallback macro in alloca.h doesn't compile anyway:
  # define alloca_account(size, avar) \
    ({ size_t s__ = (size);                   \
       avar += size__;                        \
       __alloca (size__); })
http://sources.redhat.com/cgi-bin/cvsweb.cgi/libc/include/alloca.h.diff?r1=1.8&r2=1.9&cvsroot=glibc

Should "s__" be "size__"?


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |


http://sourceware.org/bugzilla/show_bug.cgi?id=9750

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