With "make coccicheck", we generate contrib/coccinelle/*.cocci.patch files that contain changes suggested by semantic patches, but "make" succeeds. Admittedly, not many developers may run "make coccicheck" in the first place, but it makes it harder to notice when they do run it after they introduced an iffy piece of code. Check that the resulting cocci.patch files are all empty. Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx> --- Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git c/Makefile w/Makefile index 70d1543b6b..2c17868a24 100644 --- c/Makefile +++ w/Makefile @@ -3475,8 +3475,10 @@ coccicheck-test: $(COCCI_TEST_RES_GEN) coccicheck: coccicheck-test ifdef SPATCH_CONCAT_COCCI coccicheck: contrib/coccinelle/ALL.cocci.patch + ! test -s contrib/coccinelle/ALL.cocci.patch else coccicheck: $(COCCICHECK_PATCHES_INTREE) + test $$(cat $(COCCICHECK_PATCHES_INTREE) | wc -c) = 0 endif # See contrib/coccinelle/README