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Subject: [gcc-14 PATCH] objtool: Fix calloc call for new -Walloc-size
GCC 14 introduces a new -Walloc-size included in -Wextra which errors out
like:
```
check.c: In function ‘cfi_alloc’:
check.c:294:33: error: allocation of insufficient size ‘1’ for type ‘struct cfi_state’ with size ‘320’ [-Werror=alloc-size]
294 | struct cfi_state *cfi = calloc(sizeof(struct cfi_state), 1);
| ^~~~~~
```
The calloc prototype is:
```
void *calloc(size_t nmemb, size_t size);
```
So, just swap the number of members and size arguments to match the prototype, as
we're initialising 1 struct of size `sizeof(struct ...)`. GCC then sees we're not
doing anything wrong.
Link: https://lore.kernel.org/all/20231107205504.1470006-1-sam@gentoo.org/
Signed-off-by: Sam James <sam@gentoo.org>
---
tools/objtool/check.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index e94756e09ca9..548ec3cd7c00 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -291,7 +291,7 @@ static void init_insn_state(struct objtool_file *file, struct insn_state *state,
static struct cfi_state *cfi_alloc(void)
{
- struct cfi_state *cfi = calloc(sizeof(struct cfi_state), 1);
+ struct cfi_state *cfi = calloc(1, sizeof(struct cfi_state));
if (!cfi) {
WARN("calloc failed");
exit(1);
--
2.42.1
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