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clang: warn when the comma operator is used

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When compiling Git using `clang`, the `-Wcomma` option can be used to
warn about code using the comma operator (because it is typically
unintentional and wants to use the semicolon instead).

Helped-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Acked-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Johannes Schindelin
2025-03-27 11:53:02 +00:00
committed by Junio C Hamano
parent 88c91d7d74
commit 3db4cb987f
2 changed files with 5 additions and 0 deletions
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config.mak.dev
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@@ -40,6 +40,10 @@ DEVELOPER_CFLAGS += -Wvla
DEVELOPER_CFLAGS += -Wwrite-strings
DEVELOPER_CFLAGS += -fno-common
ifneq ($(filter clang9,$(COMPILER_FEATURES)),)
DEVELOPER_CFLAGS += -Wcomma
endif
ifneq ($(filter clang4,$(COMPILER_FEATURES)),)
DEVELOPER_CFLAGS += -Wtautological-constant-out-of-range-compare
endif