crosstool-ng: patches/gcc/4.3.6/330-unwind-for-uClibc.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 Original patch from: ../4.3.2/330-unwind-for-uClibc.patch

     3 -= BEGIN original header =-

     4 -= END original header =-

     6 diff -durN gcc-4.3.3.orig/gcc/config/t-linux-uclibc gcc-4.3.3/gcc/config/t-linux-uclibc

     7 --- gcc-4.3.3.orig/gcc/config/t-linux-uclibc	1970-01-01 01:00:00.000000000 +0100

     8 +++ gcc-4.3.3/gcc/config/t-linux-uclibc	2009-01-27 22:28:53.000000000 +0100

     9 @@ -0,0 +1,5 @@

    10 +# Remove glibc specific files added in t-linux

    11 +SHLIB_MAPFILES := $(filter-out $(srcdir)/config/libgcc-glibc.ver, $(SHLIB_MAPFILES))

    12 +

    13 +# Use unwind-dw2-fde instead of unwind-dw2-fde-glibc

    14 +LIB2ADDEH := $(subst unwind-dw2-fde-glibc.c,unwind-dw2-fde.c,$(LIB2ADDEH))

    15 diff -durN gcc-4.3.3.orig/gcc/config.gcc gcc-4.3.3/gcc/config.gcc

    16 --- gcc-4.3.3.orig/gcc/config.gcc	2009-01-27 22:25:37.000000000 +0100

    17 +++ gcc-4.3.3/gcc/config.gcc	2009-01-27 22:28:53.000000000 +0100

    18 @@ -2648,6 +2648,12 @@

    19  	;;

    20  esac

    22 +# Rather than hook into each target, just do it after all the linux

    23 +# targets have been processed

    24 +case ${target} in

    25 +  *-linux-uclibc*) tm_defines="${tm_defines} USE_UCLIBC" ; tmake_file="${tmake_file} t-linux-uclibc";;

    26 +esac

    27 +

    28  case ${target} in

    29  i[34567]86-*-linux*aout* | i[34567]86-*-linux*libc1)

    30  	tmake_file="${tmake_file} i386/t-gmm_malloc"

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
parent 2124	5dd0b83ae528
permissions	-rw-r--r--