glib/tests/run-assert-msg-test.sh
Martin Pitt da66897950 Support storing assertion messages into core dump
Crash interception/debugging systems like Apport or ABRT capture core dumps for
later crash analysis. However, if a program exits with an assertion failure,
the core dump is not useful since the assertion message is only printed to
stderr.

glibc recently got a patch which stores the message of assert() into the
__abort_msg global variable.
(http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=48dcd0ba)
That works fine for programs which actually use the standard C assert() macro.

This patch adds the same functionality for glib's assertion tests. If we are
building against a glibc which already has __abort_msg (2.11 and later, or
backported above git commit), use that, otherwise put it into our own field
__glib_assert_msg.

Usage:

  $ cat test.c
  #include <glib.h>

  int main() {
      g_assert(1 < 0);
      return 0;
  }

  $ ./test
  **ERROR:test.c:5:main: assertion failed: (1 < 0)
  Aborted (Core dumped)

  $ gdb --batch --ex 'print (char*) __abort_msg' ./test core
  [...]
  $1 = 0x93bf028 "ERROR:test.c:5:main: assertion failed: (1 < 0)"

https://bugzilla.gnome.org/show_bug.cgi?id=594872
2009-12-23 15:51:11 +00:00

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#! /bin/sh
fail ()
{
echo "Test failed: $*"
exit 1
}
echo_v ()
{
if [ "$verbose" = "1" ]; then
echo "$*"
fi
}
error_out=/dev/null
if [ "$1" = "-v" ]; then
verbose=1
error_out=/dev/stderr
fi
echo_v "Running assert-msg-test"
OUT=$(./assert-msg-test 2>&1) && fail "assert-msg-test should abort"
echo "$OUT" | grep -q '^ERROR:assert-msg-test.c:.*:main: assertion failed: (42 < 0)' || \
fail "does not print assertion message"
if ! type gdb >/dev/null 2>&1; then
echo_v "Skipped (no gdb installed)"
exit 0
fi
# do we use libc's or our own variable?
if grep -q '^#define HAVE_LIBC_ABORT_MSG' $(dirname $0)/../config.h; then
VAR=__abort_msg
else
VAR=__glib_assert_msg
fi
echo_v "Running gdb on assert-msg-test"
OUT=$(gdb --batch --ex run --ex "print (char*) $VAR" .libs/lt-assert-msg-test 2> $error_out) || \
fail "failed to run gdb"
echo_v "Checking if assert message is in $VAR"
if ! echo "$OUT" | grep -q '^$1.*"ERROR:assert-msg-test.c:.*:main: assertion failed: (42 < 0)"'; then
fail "$VAR does not have assertion message"
fi
echo_v "All tests passed."