config/binutils/elf2flt.in
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
parent 2467 200836977ce6
child 3090 a221c86d9b33
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)
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# elf2flt options
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if ARCH_BINFMT_FLAT
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comment "elf2flt"
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choice
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    bool
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    prompt "elf2flt version"
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# Don't remove next line
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# CT_INSERT_VERSION_BELOW
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config ELF2FLT_CVSHEAD
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    bool
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    prompt "CVS Head"
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    help
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      Grab the latest version of elf2flt from the CVS repository
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config ELF2FLT_CVS_SNAPSHOT
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    bool
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    prompt "CVS Snapshot"
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endchoice
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config ELF2FLT_CVS_SNAPSHOT_SPEC
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    string
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    depends on ELF2FLT_CVS_SNAPSHOT
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    default ""
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    prompt "CVS refspec for elf2flt"
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    help
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       What you enter here will be passed verbatim to the cvs checkout command
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       so be careful!
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config ELF2FLT_VERSION
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    string
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    default "head" if ELF2FLT_CVSHEAD
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# Don't remove next line
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# CT_INSERT_VERSION_STRING_BELOW
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config ELF2FLT_EXTRA_CONFIG_ARRAY
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    string
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    prompt "elf2flt extra config"
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    default ""
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    help
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      Extra flags passed onto ./configure when configuring
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      You can enter multiple arguments here, and arguments can contain spaces
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      if they are properly quoted (or escaped, but prefer quotes). Eg.:
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          --with-foo="1st arg with 4 spaces" --with-bar=2nd-arg-without-space
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endif