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cedda2084d
After something is popped from a stack, we overwrite the memory with uninitialised data (if JQ_DEBUG is on). This means that valgrind reports use-after-pop as an uninitialised memory error.
38 lines
614 B
C
38 lines
614 B
C
#include <stdlib.h>
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#include <stdio.h>
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#include "jv_alloc.h"
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static void memory_exhausted() {
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fprintf(stderr, "error: cannot allocate memory\n");
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abort();
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}
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void* jv_mem_alloc(size_t sz) {
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void* p = malloc(sz);
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if (!p) {
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memory_exhausted();
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}
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return p;
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}
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void jv_mem_free(void* p) {
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free(p);
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}
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void* jv_mem_realloc(void* p, size_t sz) {
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p = realloc(p, sz);
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if (!p) {
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memory_exhausted();
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}
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return p;
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}
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#if JQ_DEBUG
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volatile char jv_mem_uninitialised;
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__attribute__((constructor)) void jv_mem_uninit_setup(){
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char* p = malloc(1);
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jv_mem_uninitialised = *p;
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free(p);
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}
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#endif
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