From f8ed12dec459df9ea0d43ccacc93cb2c32702c0e Mon Sep 17 00:00:00 2001 From: Patrick Steinhardt Date: Tue, 18 Feb 2025 10:20:49 +0100 Subject: reftable/basics: stop using `SWAP()` macro Stop using `SWAP()` macro in favor of an open-coded variant of it. Note that this also requires us to open-code the build assert that `SWAP()` itself uses to verify that the size of both variables matches. This is done to reduce our dependency on the Git codebase. Signed-off-by: Patrick Steinhardt Signed-off-by: Junio C Hamano --- reftable/basics.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'reftable/basics.h') diff --git a/reftable/basics.h b/reftable/basics.h index c1ddbaec3f..59000798f0 100644 --- a/reftable/basics.h +++ b/reftable/basics.h @@ -266,6 +266,15 @@ static inline void *reftable_alloc_grow(void *p, size_t nelem, size_t elsize, # define strdup(str) REFTABLE_BANNED(strdup) #endif +#define REFTABLE_SWAP(a, b) do { \ + void *_swap_a_ptr = &(a); \ + void *_swap_b_ptr = &(b); \ + unsigned char _swap_buffer[sizeof(a) - 2 * sizeof(a) * (sizeof(a) != sizeof(b))]; \ + memcpy(_swap_buffer, _swap_a_ptr, sizeof(a)); \ + memcpy(_swap_a_ptr, _swap_b_ptr, sizeof(a)); \ + memcpy(_swap_b_ptr, _swap_buffer, sizeof(a)); \ +} while (0) + /* Find the longest shared prefix size of `a` and `b` */ size_t common_prefix_size(struct reftable_buf *a, struct reftable_buf *b); -- cgit v1.3-5-g9baa