crosstool-ng: patches/glibc/2.12.1/900-march-i686.patch@c0bf2319af08

scripts: fix dumping execution backtrace

Dumping the backtrace has been broken since changeset #652e56d6d35a:
scripts: execute each steps in a subshell

We can spawn sub-sub-shells in some cases.

The way the fault handler works is to dump the backtrace, but to avoid
printing it once for every sub-shell (which could get quite confusing),
it simply exits when it detects that it is being run in a sub-shell,
leaving to the top-level shell the work to dump the backtrace.

Because each step is executed in its own sub-shell, the variable arrays
that contain the step name, the source file and line number, are lost
when exiting the per-step sub-shell.

Hence, the backtrace is currently limited to printing only the top-level
main procedure of the shell.

Fix this thus:
- when dumping the bckatraces for the steps & the functions, remember
it was dumped, and only dump it if it was not already dumped
- at the top-level shell, print the hints

Also, rename the top-level step label.

Reported-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from 4193d6e6a17430a177fa88c287879c2c35e319f3)

     1 2007-02-15  Khem Raj  <kraj@xxxxxxxxxx>

     3        * sysdeps/unix/sysv/linux/i386/sysdep.h: Re-define __i686.

     4        * nptl/sysdeps/pthread/pt-initfini.c: Ditto.

     6 diff -urN glibc-2.12.1.orig/nptl/sysdeps/pthread/pt-initfini.c glibc-2.12.1/nptl/sysdeps/pthread/pt-initfini.c

     7 --- glibc-2.12.1.orig/nptl/sysdeps/pthread/pt-initfini.c	2009-10-30 18:17:08.000000000 +0100

     8 +++ glibc-2.12.1/nptl/sysdeps/pthread/pt-initfini.c	2010-12-30 11:36:19.858708534 +0100

     9 @@ -45,6 +45,11 @@

    10  /* Embed an #include to pull in the alignment and .end directives. */

    11  asm ("\n#include \"defs.h\"");

    13 +asm ("\n#if defined __i686 && defined __ASSEMBLER__");

    14 +asm ("\n#undef __i686");

    15 +asm ("\n#define __i686 __i686");

    16 +asm ("\n#endif");

    17 +

    18  /* The initial common code ends here. */

    19  asm ("\n/*@HEADER_ENDS*/");

    21 diff -urN glibc-2.12.1.orig/sysdeps/unix/sysv/linux/i386/sysdep.h glibc-2.12.1/sysdeps/unix/sysv/linux/i386/sysdep.h

    22 --- glibc-2.12.1.orig/sysdeps/unix/sysv/linux/i386/sysdep.h	2009-10-30 18:17:08.000000000 +0100

    23 +++ glibc-2.12.1/sysdeps/unix/sysv/linux/i386/sysdep.h	2010-12-30 11:36:19.858708534 +0100

    24 @@ -29,6 +29,10 @@

    25  #include <dl-sysdep.h>

    26  #include <tls.h>

    28 +#if defined __i686 && defined __ASSEMBLER__

    29 +#undef __i686

    30 +#define __i686 __i686

    31 +#endif

    33  /* For Linux we can use the system call table in the header file

    34  	/usr/include/asm/unistd.h

author	"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
	Tue Dec 13 23:32:39 2011 +0100 (2011-12-13)
branch	1.13
changeset 2847	c0bf2319af08
permissions	-rw-r--r--