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[gdb/testsuite] Don't generate core in gdb.base/bt-on-fatal-signal.exp

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When running test-case gdb.base/bt-on-fatal-signal.exp on powerpc64le-linux I
noticed:
...
FAIL: gdb.base/bt-on-fatal-signal.exp: SEGV: scan for backtrace (timeout)
...

The timeout is 10 seconds, but generating the core file takes more than a
minute, probably due to slow NFS.

I managed to reproduce this behaviour independently of gdb, by compiling
"int main (void) { __builtin_abort (); }" and running it, which took 1.5
seconds for a core file 50 times smaller than the one for gdb.

Fix this by preventing the core file from being generated, using a wrapper
around gdb that does "ulimit -c 0".

Tested on x86_64-linux.
This commit is contained in:
Tom de Vries
2022-11-26 14:29:10 +01:00
parent 05ad0d6034
commit 7a0daa48da
2 changed files with 15 additions and 1 deletions
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3
gdb/testsuite/gdb.base/bt-on-fatal-signal.exp
View File

@ -62,7 +62,10 @@ foreach test_data {{SEGV "Segmentation fault"} \
with_test_prefix ${sig} { with_test_prefix ${sig} {
# Restart GDB. # Restart GDB.
save_vars { GDB } {
set GDB [gdb_no_core]
clean_restart $binfile clean_restart $binfile
}
# Capture the pid of GDB. # Capture the pid of GDB.
set testpid [spawn_id_get_pid $gdb_spawn_id] set testpid [spawn_id_get_pid $gdb_spawn_id]

11
gdb/testsuite/lib/gdb.exp
View File

@ -6322,6 +6322,17 @@ proc cached_file { filename txt {executable 0}} {
return $filename return $filename
} }
# Return a wrapper around gdb that prevents generating a core file.
proc gdb_no_core { } {
set script \
[list \
"ulimit -c 0" \
[join [list exec $::GDB {"$@"}]]]
set script [join $script "\n"]
return [cached_file gdb-no-core.sh $script 1]
}
# Set 'testfile', 'srcfile', and 'binfile'. # Set 'testfile', 'srcfile', and 'binfile'.
# #
# ARGS is a list of source file specifications. # ARGS is a list of source file specifications.