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[PATCH v4 1/6] Makefile: remove mandatory "spatch" arguments from SPATCH_FLAGS

From
Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Date
Jul 5, 2022, 13:46 UTC
Message-ID
<patch-v4-1.6-fbdc2c3d66b-20220705T134033Z-avarab@gmail.com>
In-Reply-To
<cover-v4-0.6-00000000000-20220705T134033Z-avarab@gmail.com>

The "--patch ." part of SPATCH_FLAGS added in f57d11728d1 (coccinelle: put sane filenames into output patches, 2018-07-23) should have been added unconditionally to the "spatch" invocation instead, using it isn't optional.

Let's also move the other mandatory flag to come after $(SPATCH_FLAGS), to ensure that our "--sp-file" overrides any provided in the environment, both --sp-file <arg> and --patch <arg> are last-option-wins as far as spatch(1) option parsing is concerned.

The environment variable override was initially added in a9a884aea57 (coccicheck: use --all-includes by default, 2016-09-30). In practice there's probably nobody that's using SPATCH_FLAGS to try to intentionally break our invocations, but since we're changing this let's make it clear what (if anything) we expect to be overridden by user-supplied flags.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 Makefile | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/Makefile b/Makefile
index 04d0fd1fe60..c1d02f04499 100644
--- a/Makefile
+++ b/Makefile
@@ -1286,7 +1286,7 @@ SANITIZE_ADDRESS =
 # For the 'coccicheck' target; setting SPATCH_BATCH_SIZE higher will
 # usually result in less CPU usage at the cost of higher peak memory.
 # Setting it to 0 will feed all files in a single spatch invocation.
-SPATCH_FLAGS = --all-includes --patch .
+SPATCH_FLAGS = --all-includes
 SPATCH_BATCH_SIZE = 1
 
 include config.mak.uname
@@ -3131,7 +3131,8 @@ check: $(GENERATED_H)
 		limit='-n $(SPATCH_BATCH_SIZE)'; \
 	fi; \
 	if ! echo $(COCCI_SOURCES) | xargs $$limit \
-		$(SPATCH) --sp-file $< $(SPATCH_FLAGS) \
+		$(SPATCH) $(SPATCH_FLAGS) \
+		--sp-file $< --patch . \
 		>$@+ 2>$@.log; \
 	then \
 		cat $@.log; \
-- 
2.37.0.913.g50625c3f077
Previous: Ævar Arnfjörð BjarmasonNext: Ævar Arnfjörð Bjarmason
Message 17 of 24 in “cocci: add and apply a rule to find "unused" variables”
  1. cocci: add and apply a rule to find "unused" variablesÆvar Arnfjörð Bjarmason, May 20, 2022
  2. 0/2 add and apply a rule to find "unused" init+freeÆvar Arnfjörð Bjarmason, Jun 21, 2022
  3. 1/2 cocci: add and apply a rule to find "unused" variablesÆvar Arnfjörð Bjarmason, Jun 21, 2022
  4. Junio C HamanoJun 22, 2022
  5. 2/2 cocci: remove "when strict" from unused.cocciÆvar Arnfjörð Bjarmason, Jun 21, 2022
  6. 0/4 add and apply a rule to find "unused" init+freeÆvar Arnfjörð Bjarmason, Jul 1, 2022
  7. 1/4 cocci: add and apply a rule to find "unused" strbufsÆvar Arnfjörð Bjarmason, Jul 1, 2022
  8. Jeff KingJul 1, 2022
  9. Eric SunshineJul 1, 2022
  10. 2/4 cocci: catch unused "strbuf" using an xmalloc() patternÆvar Arnfjörð Bjarmason, Jul 1, 2022
  11. 4/4 cocci: generalize "unused" rule to cover more than "strbuf"Ævar Arnfjörð Bjarmason, Jul 1, 2022
  12. 3/4 cocci: remove "when strict" from unused.cocciÆvar Arnfjörð Bjarmason, Jul 1, 2022
  13. Eric SunshineJul 1, 2022
  14. Jeff KingJul 1, 2022
  15. 0/6 add and apply a rule to find "unused" init+freeÆvar Arnfjörð Bjarmason, Jul 5, 2022
  16. 2/6 Makefile & .gitignore: ignore & clean "git.res", not "*.res"Ævar Arnfjörð Bjarmason, Jul 5, 2022
  17. 1/6 Makefile: remove mandatory "spatch" arguments from SPATCH_FLAGSÆvar Arnfjörð Bjarmason, Jul 5, 2022
  18. 3/6 cocci: add a "coccicheck-test" target and test *.cocci rulesÆvar Arnfjörð Bjarmason, Jul 5, 2022
  19. 4/6 cocci: have "coccicheck{,-pending}" depend on "coccicheck-test"Ævar Arnfjörð Bjarmason, Jul 5, 2022
  20. 5/6 cocci: add and apply a rule to find "unused" strbufsÆvar Arnfjörð Bjarmason, Jul 5, 2022
  21. 6/6 cocci: generalize "unused" rule to cover more than "strbuf"Ævar Arnfjörð Bjarmason, Jul 5, 2022
  22. Junio C HamanoJul 6, 2022
  23. Jeff KingJul 11, 2022
  24. Ævar Arnfjörð BjarmasonJul 11, 2022

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