Daan De Meyer
b8b2316b0a
meson test --wrapper hook to print a gdb backtrace inline in the test log when a test exits with an actual crash signal (SIGSEGV, SIGABRT, SIGBUS, SIGFPE, SIGILL). Wired into the default add_test_setup() so it runs automatically on every `meson test`. Environmental terminations (SIGTERM/SIGKILL/SIGPIPE/SIGALRM) are passed through without replay, and the original signal is re-raised so the parent's wait() observes WIFSIGNALED rather than a plain exit code.
57 lines
1.9 KiB
Bash
Executable File
57 lines
1.9 KiB
Bash
Executable File
#!/usr/bin/env bash
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# SPDX-License-Identifier: LGPL-2.1-or-later
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#
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# meson test wrapper that replays crashing tests under gdb and prints a
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# backtrace, so SIGSEGV/SIGABRT/etc. failures in CI show a stack trace inline
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# in the test log instead of just an exit code.
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#
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# Usage: meson test --wrapper=$PWD/tools/test-crash-trace.sh
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set -euo pipefail
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if [[ $# -eq 0 ]]; then
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echo "usage: $0 <command> [args...]" >&2
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exit 2
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fi
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rc=0
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"$@" || rc=$?
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# Replay only on actual crash signals (128 + signal): SIGILL=132, SIGABRT=134,
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# SIGBUS=135, SIGFPE=136, SIGSEGV=139. SIGTERM/SIGKILL/SIGPIPE/SIGALRM mean the
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# test was killed by the environment (timeout, etc.), not that it crashed —
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# replaying those just makes gdb hit the same kill.
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case "$rc" in
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132|134|135|136|139)
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if command -v gdb >/dev/null 2>&1; then
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echo "===== exit $rc — replaying under gdb =====" >&2
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style_args=()
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if [[ -t 2 ]]; then
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style_args=(--ex 'set style enabled on')
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fi
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gdb --batch \
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--ex 'set pagination off' \
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${style_args[@]+"${style_args[@]}"} \
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--ex 'run' \
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--ex 'thread apply all bt full' \
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--args "$@" >&2 || true
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else
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echo "===== exit $rc — install gdb for a backtrace =====" >&2
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fi
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;;
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esac
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# If the child died by signal, re-raise it so the parent's wait() observes
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# WIFSIGNALED instead of a plain exit code. Best-effort: SIGKILL can't be
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# delivered to ourselves and would have killed us already.
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if [[ $rc -gt 128 ]]; then
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sig=$((rc - 128))
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trap - "$sig" 2>/dev/null || true
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# Suppress the wrapper bash's own core dump from the re-raised crash signal;
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# the original test binary already had its chance to dump core on line 18.
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ulimit -c 0
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kill -s "$sig" $$ 2>/dev/null || true
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fi
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exit "$rc"
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