crosstool-ng: patches/glibc/ports-2.10.1/410-alpha-no-page-header.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 2008-06-07  Mike Frysinger  <vapier@gentoo.org>

     3 	* sysdeps/unix/sysv/linux/alpha/sys/user.h: Copy page.h definitions

     4 	from the kernel header to sys/user.h and remove the #include of

     5 	sys/user.h.

     7 diff -durN glibc-2.10.1.orig/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/sys/user.h glibc-2.10.1/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/sys/user.h

     8 --- glibc-2.10.1.orig/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/sys/user.h	2009-05-16 10:36:20.000000000 +0200

     9 +++ glibc-2.10.1/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/sys/user.h	2009-11-13 00:50:47.000000000 +0100

    10 @@ -23,7 +23,6 @@

    11     only. Don't read too much into it. Don't use it for anything other

    12     than gdb/strace unless you know what you are doing. */

    14 -#include <asm/page.h>

    15  #include <asm/reg.h>

    17  struct user

    18 @@ -41,6 +40,9 @@

    19    char u_comm[32];				/* user command name */

    20  };

    22 +#define PAGE_SHIFT		13

    23 +#define PAGE_SIZE		(1 << PAGE_SHIFT)

    24 +#define PAGE_MASK		(~(PAGE_SIZE-1))

    25  #define NBPG			PAGE_SIZE

    26  #define UPAGES			1

    27  #define HOST_TEXT_START_ADDR	(u.start_code)

    28 diff -durN glibc-2.10.1.orig/ports/sysdeps/unix/sysv/linux/alpha/sys/user.h glibc-2.10.1/ports/sysdeps/unix/sysv/linux/alpha/sys/user.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--