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-rw-r--r--t/helper/test-trace2.c9
-rwxr-xr-xt/t0210-trace2-normal.sh19
-rw-r--r--usage.c11
3 files changed, 39 insertions, 0 deletions
diff --git a/t/helper/test-trace2.c b/t/helper/test-trace2.c
index 823f33ceff..f93633f895 100644
--- a/t/helper/test-trace2.c
+++ b/t/helper/test-trace2.c
@@ -198,6 +198,14 @@ static int ut_006data(int argc, const char **argv)
return 0;
}
+static int ut_007bug(int argc, const char **argv)
+{
+ /*
+ * Exercise BUG() to ensure that the message is printed to trace2.
+ */
+ BUG("the bug message");
+}
+
/*
* Usage:
* test-tool trace2 <ut_name_1> <ut_usage_1>
@@ -214,6 +222,7 @@ static struct unit_test ut_table[] = {
{ ut_004child, "004child", "[<child_command_line>]" },
{ ut_005exec, "005exec", "<git_command_args>" },
{ ut_006data, "006data", "[<category> <key> <value>]+" },
+ { ut_007bug, "007bug", "" },
};
/* clang-format on */
diff --git a/t/t0210-trace2-normal.sh b/t/t0210-trace2-normal.sh
index ce7574edb1..0cf3a63b75 100755
--- a/t/t0210-trace2-normal.sh
+++ b/t/t0210-trace2-normal.sh
@@ -147,6 +147,25 @@ test_expect_success 'normal stream, error event' '
test_cmp expect actual
'
+# Verb 007bug
+#
+# Check that BUG writes to trace2
+
+test_expect_success 'BUG messages are written to trace2' '
+ test_when_finished "rm trace.normal actual expect" &&
+ test_must_fail env GIT_TRACE2="$(pwd)/trace.normal" test-tool trace2 007bug &&
+ perl "$TEST_DIRECTORY/t0210/scrub_normal.perl" <trace.normal >actual &&
+ cat >expect <<-EOF &&
+ version $V
+ start _EXE_ trace2 007bug
+ cmd_name trace2 (trace2)
+ error the bug message
+ exit elapsed:_TIME_ code:99
+ atexit elapsed:_TIME_ code:99
+ EOF
+ test_cmp expect actual
+'
+
sane_unset GIT_TRACE2_BRIEF
# Now test without environment variables and get all Trace2 settings
diff --git a/usage.c b/usage.c
index 1868a24f7a..1b206de36d 100644
--- a/usage.c
+++ b/usage.c
@@ -266,6 +266,10 @@ int BUG_exit_code;
static NORETURN void BUG_vfl(const char *file, int line, const char *fmt, va_list params)
{
char prefix[256];
+ va_list params_copy;
+ static int in_bug;
+
+ va_copy(params_copy, params);
/* truncation via snprintf is OK here */
if (file)
@@ -274,6 +278,13 @@ 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 (in_bug)
+ abort();
+ in_bug = 1;
+
+ trace2_cmd_error_va(fmt, params_copy);
+
if (BUG_exit_code)
exit(BUG_exit_code);
abort();