crosstool-ng: patches/glibc/ports-2.10.1/520-alpha-add-futex-defines.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 2009-05-19  Aurelien Jarno  <aurelien@aurel32.net>

     3 	* sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h: Define

     4 	FUTEX_WAIT_BITSET, FUTEX_WAKE_BITSET, FUTEX_CLOCK_REALTIME and

     5 	FUTEX_BITSET_MATCH_ANY.

     7  ports/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h |    5 +++++

     8  1 file changed, 5 insertions(+)

    10 diff -durN glibc-2.10.1.orig/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h glibc-2.10.1/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h

    11 --- glibc-2.10.1.orig/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h	2009-05-16 10:36:20.000000000 +0200

    12 +++ glibc-2.10.1/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h	2009-11-13 00:51:11.000000000 +0100

    13 @@ -37,7 +37,12 @@

    14  #define FUTEX_LOCK_PI		6

    15  #define FUTEX_UNLOCK_PI		7

    16  #define FUTEX_TRYLOCK_PI	8

    17 +#define FUTEX_WAIT_BITSET	9

    18 +#define FUTEX_WAKE_BITSET	10

    19  #define FUTEX_PRIVATE_FLAG	128

    20 +#define FUTEX_CLOCK_REALTIME	256

    21 +

    22 +#define FUTEX_BITSET_MATCH_ANY	0xffffffff

    24  /* Values for 'private' parameter of locking macros.  Yes, the

    25     definition seems to be backwards.  But it is not.  The bit will be

    26 diff -durN glibc-2.10.1.orig/ports/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h glibc-2.10.1/ports/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.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--