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patches/gcc/4.4.2/410-libgcc_eh.a.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Tue Dec 13 23:32:39 2011 +0100 (2011-12-13)
branch1.13
changeset 2847 c0bf2319af08
permissions -rw-r--r--
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 Highly inspired by:

     2   http://landley.net/hg/aboriginal/file/7e0747a665ab/sources/patches/gcc-core-libgcceh.patch

     3 

     4 diff -durN gcc-4.4.0.orig/libgcc/Makefile.in gcc-4.4.0/libgcc/Makefile.in

     5 --- gcc-4.4.0.orig/libgcc/Makefile.in	2009-04-10 01:23:07.000000000 +0200

     6 +++ gcc-4.4.0/libgcc/Makefile.in	2011-09-12 17:05:25.121124559 +0200

     7 @@ -754,8 +754,9 @@

     8  libgcc_s$(SHLIB_EXT): libunwind$(SHLIB_EXT)

     9  endif

    10  

    11 +all: libgcc_eh.a

    12  ifeq ($(enable_shared),yes)

    13 -all: libgcc_eh.a libgcc_s$(SHLIB_EXT)

    14 +all: libgcc_s$(SHLIB_EXT)

    15  ifneq ($(LIBUNWIND),)

    16  all: libunwind$(SHLIB_EXT)

    17  endif

    18 @@ -924,10 +925,6 @@

    19  install-shared:

    20  	$(mkinstalldirs) $(DESTDIR)$(inst_libdir)

    21  

    22 -	$(INSTALL_DATA) libgcc_eh.a $(DESTDIR)$(inst_libdir)/

    23 -	chmod 644 $(DESTDIR)$(inst_libdir)/libgcc_eh.a

    24 -	$(RANLIB) $(DESTDIR)$(inst_libdir)/libgcc_eh.a

    25 -

    26  	$(subst @multilib_dir@,$(MULTIDIR),$(subst \

    27  		@shlib_base_name@,libgcc_s,$(subst \

    28  		@shlib_slibdir_qual@,$(MULTIOSSUBDIR),$(SHLIB_INSTALL))))

    29 @@ -942,6 +939,10 @@

    30  	chmod 644 $(DESTDIR)$(inst_libdir)/libgcov.a

    31  	$(RANLIB) $(DESTDIR)$(inst_libdir)/libgcov.a

    32  

    33 +	$(INSTALL_DATA) libgcc_eh.a $(DESTDIR)$(inst_libdir)/

    34 +	chmod 644 $(DESTDIR)$(inst_libdir)/libgcc_eh.a

    35 +	$(RANLIB) $(DESTDIR)$(inst_libdir)/libgcc_eh.a

    36 +

    37  	parts="$(INSTALL_PARTS)";				\

    38  	for file in $$parts; do					\

    39  	  rm -f $(DESTDIR)$(inst_libdir)/$$file;		\
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