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freebsd-skq/bin/sh
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Jilles Tjoelker 586fd24857 sh: Fix crash if a -T trap is taken during command substitution. 
Code like  t=$(stat -f %m "$file")  segfaulted if -T was active and a trap
was taken while the shell was waiting for the child process to finish.

What happened was that the dotrap() call in waitforjob() was hit. This
re-entered command execution (including expand.c) at a point not expected by
expbackq(), and global state (unallocated stack string and argbackq) was
corrupted.

To fix this, change expbackq() to prepare for command execution to be
re-entered.

Reported by:	bdrewery
MFC after:	1 week
2017-03-04 22:58:34 +00:00
..
bltin
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funcs
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tests
sh: Fix crash if a -T trap is taken during command substitution.
2017-03-04 22:58:34 +00:00
alias.c
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alias.h
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arith_yacc.c
sh: Remove two redundant (uintmax_t) casts.
2014-08-20 20:15:43 +00:00
arith_yacc.h
sh: Fix compiler warnings related to duplicate or missing declarations.
2015-03-01 21:46:55 +00:00
arith_yylex.c
sh: Fix compiler warnings related to duplicate or missing declarations.
2015-03-01 21:46:55 +00:00
arith.h
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builtins.def
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cd.c
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cd.h
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error.c
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error.h
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eval.c
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eval.h
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exec.c
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exec.h
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expand.c
sh: Fix crash if a -T trap is taken during command substitution.
2017-03-04 22:58:34 +00:00
expand.h
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histedit.c
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input.c
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input.h
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jobs.c
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jobs.h
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mail.c
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mail.h
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main.c
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main.h
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Makefile
bin: normalize paths using SRCTOP-relative paths or :H when possible
2017-03-04 11:31:08 +00:00
Makefile.depend
DIRDEPS_BUILD: Regenerate without local dependencies.
2016-02-24 17:20:11 +00:00
memalloc.c
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memalloc.h
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miscbltin.c
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mkbuiltins
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mknodes.c
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mksyntax.c
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mktokens
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myhistedit.h
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mystring.c
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mystring.h
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nodes.c.pat
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nodetypes
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options.c
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options.h
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output.c
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output.h
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parser.c
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parser.h
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redir.c
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redir.h
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sh.1
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shell.h
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show.c
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show.h
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TOUR
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trap.c
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trap.h
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var.c
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var.h
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