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use "sentinel" function attribute for variadic lists

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This attribute can help gcc notice when callers forget to
add a NULL sentinel to the end of the function. This is our
first use of the sentinel attribute, but we shouldn't need
to #ifdef for other compilers, as __attribute__ is already a
no-op on non-gcc-compatible compilers.

Suggested-by: Bert Wesarg <bert.wesarg@googlemail.com>
More-Spots-Found-By: Matt Kraai <kraai@ftbfs.org>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King
2013-07-09 20:19:12 -04:00
committed by Junio C Hamano
parent 4621085b7e
commit eccb614924
4 changed files with 5 additions and 0 deletions
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argv-array.h
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@ -15,6 +15,7 @@ void argv_array_init(struct argv_array *);
void argv_array_push(struct argv_array *, const char *);
__attribute__((format (printf,2,3)))
void argv_array_pushf(struct argv_array *, const char *fmt, ...);
__attribute__((sentinel))
void argv_array_pushl(struct argv_array *, ...);
void argv_array_pop(struct argv_array *);
void argv_array_clear(struct argv_array *);