From: Jeff King Date: Tue, 07 Jan 2025 07:08:31 GMT Subject: [PATCH 3/3] test-lib: add a few comments to LSan log checking Message-ID: <20250107070831.GC584668@coredump.intra.peff.net> In-Reply-To: <20250107070409.GA584456@coredump.intra.peff.net> Commit b119a687d4 (test-lib: ignore leaks in the sanitizer's thread code, 2025-01-01) added code to suppress a false positive in the leak checker. But if you're just reading the code, the obscure grep call is a bit of a head-scratcher. Let's add a brief comment explaining what's going on (and anybody digging further can find this commit or that one for all the details). Signed-off-by: Jeff King --- t/test-lib.sh | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/t/test-lib.sh b/t/test-lib.sh index 898c2267b8..9f27a49995 100644 --- a/t/test-lib.sh +++ b/t/test-lib.sh @@ -1172,6 +1172,11 @@ test_atexit_handler () { check_test_results_san_file_has_entries_ () { test -z "$TEST_RESULTS_SAN_FILE" && return 1 + # Lines marked with DEDUP_TOKEN show unique leaks. We only care that we + # found at least one. + # + # But also suppress any false positives caused by bugs or races in the + # sanitizer itself. grep -s ^DEDUP_TOKEN "$TEST_RESULTS_SAN_FILE".* | grep -qv sanitizer::GetThreadStackTopAndBottom } -- 2.48.0.rc2.377.g0507c08f68