Public bug reported:
Binary package hint: gcc
I have a small source file which produces a sigsegv in debug code but
runs fine optimised to -O3. However, assembler from SuSE compiler or gcc
4.3.3 built on ubuntu 8.10 from gcc.gnu.org source does not crash.
$ apt-cache policy gcc
gcc:
Installed: 4:4.3.1-1ubuntu2
Candidate: 4:4.3.1-1ubuntu2
Version table:
*** 4:4.3.1-1ubuntu2 0
500 http://gb.archive.ubuntu.com intrepid/main Packages
100 /var/lib/dpkg/status
$ gcc -g soundex.c -o soundex
$ ./soundex burroughs ashcroft brc mcknight mcnaught mcknawght
strlen("burroughs")
B620 burroughs
strlen("ashcroft")
Segmentation fault
Package gcc-3.4 also causes crash:
$ gcc-3.4 -g soundex.c -o soundex
$ ./soundex burroughs ashcroft brc mcknight mcnaught mcknawght
strlen("burroughs")
B620 burroughs
strlen("ashcroft")
Segmentation fault
$ apt-cache policy gcc-3.4
gcc-3.4:
Installed: 3.4.6-8ubuntu2
Candidate: 3.4.6-8ubuntu2
Version table:
*** 3.4.6-8ubuntu2 0
500 http://gb.archive.ubuntu.com intrepid/universe Packages
100 /var/lib/dpkg/status
strlen() does not crash if optimised in line (or if I use a home-brew compiler
or SuSE compiler):
$ gcc -O3 soundex.c -o soundex
$ ./soundex burroughs ashcroft brc mcknight mcnaught mcknawght
strlen("burroughs")
B620 burroughs
strlen("ashcroft")
A261 ashcroft
strlen("brc")
B620 brc
strlen("mcknight")
M252 mcknight
strlen("mcnaught")
M252 mcnaught
strlen("mcknawght")
M252 mcknawght
** Affects: gcc-defaults (Ubuntu)
Importance: Undecided
Status: New
--
gcc 4.3.1-lubuntu2 debug code crashes in 8.10 with sigsegv in strlen
https://bugs.launchpad.net/bugs/328908
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