457385d5f4
Add a function to allocate an array, which fails safely in the case where the multiplication would overflow.
15 lines
259 B
C
15 lines
259 B
C
#include "memory.h"
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#include <stdlib.h>
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#include <errno.h>
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void *
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sc_allocarray(size_t nmemb, size_t size) {
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size_t bytes;
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if (__builtin_mul_overflow(nmemb, size, &bytes)) {
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errno = ENOMEM;
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return NULL;
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}
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return malloc(bytes);
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}
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