Package: dash
Version: 0.5.4-7
Severity: important
Steps to reproduce segfault, within dash:
mkdir -p dash-test
touch dash-test/a.xpm
if test -d "dash-test"; then echo "dash-test"; for pixmap in "dash-test/"*.xpm;
do echo "${pixmap}"; done; fi | less
The first two lines can be given in any shell, they're only for setup.
The crash only seems to affect interactive operation, other things I
tried like dash -c "blah blah" and dash <<EOT
blah blah
EOT
didn't produce the crash. My bug title is a somewhat wild guess as to
what actually triggers the crash.
I found this bug investigating 459181, it may or may not be related.
Backtraces from the above line, and a minor variant that segfaults in
a different place.
=== CRASH VARIANT 1
if test -d "dash-test"; then echo "dash-test"; for pixmap in "dash-test/"*.xpm;
do echo "${pixmap}"; done; fi | less
Program received signal SIGSEGV, Segmentation fault.
cmdtxt (n=0x6966)
at /home/ldoolitt/deb-src/dash-0.5.4/build-tmp/../src/jobs.c:1196
1196 switch (n->type) {
(gdb) bt
#0 cmdtxt (n=0x6966)
at /home/ldoolitt/deb-src/dash-0.5.4/build-tmp/../src/jobs.c:1196
#1 0x00000000004089f5 in cmdtxt (n=0x6966)
at /home/ldoolitt/deb-src/dash-0.5.4/build-tmp/../src/jobs.c:1264
#2 0x0000000000408d28 in forkshell (jp=0x61b760, n=0x619d10,
mode=<value optimized out>)
at /home/ldoolitt/deb-src/dash-0.5.4/build-tmp/../src/jobs.c:1178
#3 0x0000000000403cb6 in evalpipe (n=0x61b5c0, flags=0)
at /home/ldoolitt/deb-src/dash-0.5.4/build-tmp/../src/eval.c:540
#4 0x0000000000403978 in evaltree (n=0x61b5c0, flags=0)
at /home/ldoolitt/deb-src/dash-0.5.4/build-tmp/../src/eval.c:289
#5 0x0000000000409da5 in cmdloop (top=1)
at /home/ldoolitt/deb-src/dash-0.5.4/build-tmp/../src/main.c:237
#6 0x0000000000409ff9 in main (argc=1, argv=0x7fff272a89c8)
at /home/ldoolitt/deb-src/dash-0.5.4/build-tmp/../src/main.c:178
=== CRASH VARIANT 2
if test -d "dash-test"; then for pixmap in "dash-test/"*.xpm; do echo
"${pixmap}"; done; fi | less
Program received signal SIGSEGV, Segmentation fault.
cmdtxt (n=0x619de0)
at /home/ldoolitt/deb-src/dash-0.5.4/build-tmp/../src/jobs.c:1204
1204 cmdtxt(lp->n);
(gdb) bt
#0 cmdtxt (n=0x619de0)
at /home/ldoolitt/deb-src/dash-0.5.4/build-tmp/../src/jobs.c:1204
#1 0x00000000004089f5 in cmdtxt (n=0x619de0)
at /home/ldoolitt/deb-src/dash-0.5.4/build-tmp/../src/jobs.c:1264
#2 0x0000000000408d28 in forkshell (jp=0x61b760, n=0x619d10,
mode=<value optimized out>)
at /home/ldoolitt/deb-src/dash-0.5.4/build-tmp/../src/jobs.c:1178
#3 0x0000000000403cb6 in evalpipe (n=0x619ed8, flags=0)
at /home/ldoolitt/deb-src/dash-0.5.4/build-tmp/../src/eval.c:540
#4 0x0000000000403978 in evaltree (n=0x619ed8, flags=0)
at /home/ldoolitt/deb-src/dash-0.5.4/build-tmp/../src/eval.c:289
#5 0x0000000000409da5 in cmdloop (top=1)
at /home/ldoolitt/deb-src/dash-0.5.4/build-tmp/../src/main.c:237
#6 0x0000000000409ff9 in main (argc=1, argv=0x7ffffaa861a8)
at /home/ldoolitt/deb-src/dash-0.5.4/build-tmp/../src/main.c:178
-- System Information:
Debian Release: lenny/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.24-1-amd64 (SMP w/1 CPU core)
Locale: LANG=en_US, LC_CTYPE=en_US (charmap=ISO-8859-1)
Shell: /bin/sh linked to /bin/bash
Versions of packages dash depends on:
ii libc6 2.7-8 GNU C Library: Shared libraries
dash recommends no packages.
-- debconf information excluded
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