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git-compat-util: introduce ASSERT() macro

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Create a ASSERT() macro which is similar to assert(), but will not be
compiled out when NDEBUG is defined, and is thus safe to use even if its
argument has side-effects.

We will use this new macro in a subsequent commit to convert a few
existing assert() invocations to ASSERT().  In particular, we'll
convert the handful of invocations which cannot be proven to be free of
side effects with a simple compiler/linker hack.

Signed-off-by: Elijah Newren <newren@gmail.com>
Acked-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Elijah Newren
2025-03-19 16:22:56 +00:00
committed by Junio C Hamano
parent 683c54c999
commit 07fbc15c20
1 changed files with 2 additions and 0 deletions
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git-compat-util.h
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@@ -1460,6 +1460,8 @@ extern int bug_called_must_BUG;
__attribute__((format (printf, 3, 4))) NORETURN
void BUG_fl(const char *file, int line, const char *fmt, ...);
#define BUG(...) BUG_fl(__FILE__, __LINE__, __VA_ARGS__)
/* ASSERT: like assert(), but won't be compiled out with NDEBUG */
#define ASSERT(a) if (!(a)) BUG("Assertion `" #a "' failed.")
__attribute__((format (printf, 3, 4)))
void bug_fl(const char *file, int line, const char *fmt, ...);
#define bug(...) bug_fl(__FILE__, __LINE__, __VA_ARGS__)