Red Bear OS
1b3e94a20d
From release 0.1.0 pre-patched archive. This includes all Red Bear modifications previously maintained as patches in local/patches/relibc/.
32 lines
697 B
C
32 lines
697 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <malloc.h>
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#include <string.h>
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#include <assert.h>
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int main(void) {
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size_t request_size = 27;
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char *ptr = (char *)malloc(request_size);
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if (!ptr) {
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fprintf(stderr, "Allocation failed\n");
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return 1;
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}
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size_t actual_size = malloc_usable_size(ptr);
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printf("malloc: %zu bytes\n", request_size);
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printf("malloc_usable_size: %zu bytes\n", actual_size);
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assert(actual_size >= request_size);
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memset(ptr, 'A', actual_size);
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ptr[actual_size - 1] = '\0';
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assert(ptr[0] == 'A');
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assert(ptr[actual_size - 2] == 'A');
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assert(ptr[actual_size - 1] == '\0');
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free(ptr);
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return 0;
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}
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