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reftable: make REFTABLE_UNUSED C99 compatible 

Since f93b2a0424 (reftable/basics: introduce `REFTABLE_UNUSED`
annotation, 2025-02-18), the reftable library was migrated to
use an internal version of `UNUSED`, which unconditionally sets
a GNU __attribute__ to avoid warnings function parameters that
are not being used.

Make the definition conditional to prevent breaking the build
with non GNU compilers.

Reported-by: "Randall S. Becker" <rsbecker@nexbridge.com>
Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
Carlo Marcelo Arenas Belón 2025-05-29 03:11:36 -07:00 committed by Junio C Hamano
parent fcfe60668e
commit f1228cd12c
1 changed files with 4 additions and 0 deletions
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4
reftable/basics.h
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@ -16,7 +16,11 @@
#include "system.h"
#include "reftable-basics.h"

#ifdef __GNUC__
#define REFTABLE_UNUSED __attribute__((__unused__))
#else
#define REFTABLE_UNUSED
#endif

/*
* Initialize the buffer such that it is ready for use. This is equivalent to