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 <pclouds@xxxxxxxxx>
Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
t/helper/test-tool.c | 2 ++
usage.c | 5 +++++
2 files changed, 7 insertions(+)
diff --git a/t/helper/test-tool.c b/t/helper/test-tool.c
index 87066ced62a..5176f9f20ae 100644
--- a/t/helper/test-tool.c
+++ b/t/helper/test-tool.c
@@ -47,7 +47,9 @@ static struct test_cmd cmds[] = {
int cmd_main(int argc, const char **argv)
{
int i;
+ extern int BUG_exit_code;
+ BUG_exit_code = 99;
if (argc < 2)
die("I need a test name!");
diff --git a/usage.c b/usage.c
index cdd534c9dfc..9c84dccfa97 100644
--- a/usage.c
+++ b/usage.c
@@ -210,6 +210,9 @@ void warning(const char *warn, ...)
va_end(params);
}
+/* 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);
abort();
}
--
2.17.0.windows.1.36.gdf4ca5fb72a
