path: root/usage.c
diff options
authorJohannes Schindelin <>2018-05-02 09:38:28 (GMT)
committerJunio C Hamano <>2018-05-06 10:06:13 (GMT)
commita86303cb5d5772364a3a5080d97be6f1a577be4c (patch)
tree01c5cbec3ec724de7e42f04aac2f4ca63178ca6c /usage.c
parent1f1cddd558b54bb0ce19c8ace353fd07b758510d (diff)
test-tool: help verifying BUG() code paths
When we call BUG(), we signal via SIGABRT that something bad happened, dumping cores if so configured. In some setups these coredumps are redirected to some central place such as /proc/sys/kernel/core_pattern, which is a good thing. However, when we try to verify in our test suite that bugs are caught in certain code paths, we do *not* want to clutter such a central place with unnecessary coredumps. So let's special-case the test helpers (which we use to verify such code paths) so that the BUG() calls will *not* call abort() but exit with a special-purpose exit code instead. Helped-by: Nguyễn Thái Ngọc Duy <> Signed-off-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <>
Diffstat (limited to 'usage.c')
1 files changed, 5 insertions, 0 deletions
diff --git a/usage.c b/usage.c
index cdd534c..9c84dcc 100644
--- a/usage.c
+++ b/usage.c
@@ -210,6 +210,9 @@ void warning(const char *warn, ...)
+/* Only set this, ever, from t/helper/, when verifying that bugs are caught. */
+int BUG_exit_code;
static NORETURN void BUG_vfl(const char *file, int line, const char *fmt, va_list params)
char prefix[256];
@@ -221,6 +224,8 @@ static NORETURN void BUG_vfl(const char *file, int line, const char *fmt, va_lis
snprintf(prefix, sizeof(prefix), "BUG: ");
vreportf(prefix, fmt, params);
+ if (BUG_exit_code)
+ exit(BUG_exit_code);