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drivers/periph_cpuid: Minor cleanup

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Avoid use of `memcpy` altogether to work around false positive of
`-Warray-bounds` in newer GCC versions.
This commit is contained in:
Marian Buschsieweke 2022-04-11 10:05:45 +02:00
parent ad345eea4b
commit 697448e51c
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GPG Key ID: CB8E3238CE715A94
1 changed files with 7 additions and 7 deletions
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14
drivers/periph_common/cpuid.c
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@ -28,15 +28,15 @@
#include "periph/cpuid.h"
typedef struct {
uint8_t id[CPUID_LEN];
} cpuid_t;
#ifdef CPUID_ADDR
void cpuid_get(void *id)
{
/* gcc 11.2.0 builtin bounds checking raises the following false positive warnings */
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wpragmas" /* silence the CI due to unknown -Wstringop-overread */
#pragma GCC diagnostic ignored "-Warray-bounds"
#pragma GCC diagnostic ignored "-Wstringop-overread"
memcpy(id, (void *)CPUID_ADDR, CPUID_LEN);
#pragma GCC diagnostic pop
cpuid_t *dest = id;
const volatile cpuid_t *src = (const void *)CPUID_ADDR;
*dest = *src;
}
#endif