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t-strvec: mark variable-arg helper with LAST_ARG_MUST_BE_NULL
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@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -4,6 +4,7 @@
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#define check_strvec(vec, ...) \
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check_strvec_loc(TEST_LOCATION(), vec, __VA_ARGS__)
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LAST_ARG_MUST_BE_NULL
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static void check_strvec_loc(const char *loc, struct strvec *vec, ...)
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{
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va_list ap;
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