crosstool-ng: patches/gcc/4.4.5/130-cross-compile.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 diff -durN gcc-4.4.5.orig/gcc/configure gcc-4.4.5/gcc/configure

     2 --- gcc-4.4.5.orig/gcc/configure	2010-06-20 17:43:53.000000000 +0200

     3 +++ gcc-4.4.5/gcc/configure	2010-10-09 22:58:36.000000000 +0200

     4 @@ -13997,7 +13997,7 @@

     5  	    | powerpc*-*-*,powerpc64*-*-*)

     6  		CROSS="$CROSS -DNATIVE_CROSS" ;;

     7  	esac

     8 -elif test "x$TARGET_SYSTEM_ROOT" != x; then

     9 +elif test "x$TARGET_SYSTEM_ROOT" != x -o $build != $host; then

    10          SYSTEM_HEADER_DIR=$build_system_header_dir

    11  fi

    13 diff -durN gcc-4.4.5.orig/gcc/configure.ac gcc-4.4.5/gcc/configure.ac

    14 --- gcc-4.4.5.orig/gcc/configure.ac	2010-06-20 17:43:53.000000000 +0200

    15 +++ gcc-4.4.5/gcc/configure.ac	2010-10-09 22:58:36.000000000 +0200

    16 @@ -1720,7 +1720,7 @@

    17  	    | powerpc*-*-*,powerpc64*-*-*)

    18  		CROSS="$CROSS -DNATIVE_CROSS" ;;

    19  	esac

    20 -elif test "x$TARGET_SYSTEM_ROOT" != x; then

    21 +elif test "x$TARGET_SYSTEM_ROOT" != x -o $build != $host; then

    22          SYSTEM_HEADER_DIR=$build_system_header_dir

    23  fi

    25 diff -durN gcc-4.4.5.orig/gcc/unwind-dw2.c gcc-4.4.5/gcc/unwind-dw2.c

    26 --- gcc-4.4.5.orig/gcc/unwind-dw2.c	2010-01-20 09:39:18.000000000 +0100

    27 +++ gcc-4.4.5/gcc/unwind-dw2.c	2010-10-09 22:58:36.000000000 +0200

    28 @@ -329,9 +329,11 @@

    29  }

    30  #endif

    32 +#ifndef inhibit_libc

    33  #ifdef MD_UNWIND_SUPPORT

    34  #include MD_UNWIND_SUPPORT

    35  #endif

    36 +#endif

    38  /* Extract any interesting information from the CIE for the translation

    39     unit F belongs to.  Return a pointer to the byte after the augmentation,

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--