[PATCH 2/5] t-strvec: mark variable-arg helper with LAST_ARG_MUST_BE_NULL

[Jeff King <peff@xxxxxxxx>]

This will let the compiler catch a problem like:

  /* oops, we forgot the NULL */
  check_strvec(&vec, "foo");

rather than triggering undefined behavior at runtime.

Signed-off-by: Jeff King <peff@xxxxxxxx>
---
 t/unit-tests/t-strvec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/t/unit-tests/t-strvec.c b/t/unit-tests/t-strvec.c
index 6c1465ee61..d4615ab06d 100644
--- a/t/unit-tests/t-strvec.c
+++ b/t/unit-tests/t-strvec.c
@@ -4,6 +4,7 @@
 
 #define check_strvec(vec, ...) \
 	check_strvec_loc(TEST_LOCATION(), vec, __VA_ARGS__)
+LAST_ARG_MUST_BE_NULL
 static void check_strvec_loc(const char *loc, struct strvec *vec, ...)
 {
 	va_list ap;
-- 
2.45.1.692.gbe047d9c60