mirror of
https://github.com/elicpeter/nyx.git
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62 lines
1.2 KiB
C
62 lines
1.2 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/* Clean open/close — no findings expected */
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void clean_usage(void) {
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FILE *f = fopen("data.txt", "r");
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char buf[256];
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fread(buf, 1, 256, f);
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fclose(f);
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}
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/* Resource leak — fopen without fclose */
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void leaky_function(void) {
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FILE *f = fopen("log.txt", "w");
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fprintf(f, "hello");
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}
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/* Use after close */
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void use_after_close(void) {
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FILE *f = fopen("tmp.txt", "r");
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fclose(f);
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char buf[64];
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fread(buf, 1, 64, f);
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}
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/* Branch leak — closed on one path only */
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void branch_leak(int cond) {
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FILE *f = fopen("x.txt", "r");
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if (cond) {
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fclose(f);
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}
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}
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/* Multiple handles — both properly closed */
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void multi_handle(void) {
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FILE *a = fopen("a.txt", "r");
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FILE *b = fopen("b.txt", "w");
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fclose(a);
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fclose(b);
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}
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/* Double close */
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void double_close(void) {
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FILE *f = fopen("d.txt", "r");
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fclose(f);
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fclose(f);
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}
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/* Malloc/free — clean */
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void malloc_clean(void) {
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char *p = malloc(1024);
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memset(p, 0, 1024);
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free(p);
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}
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/* Malloc leak — never freed */
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void malloc_leak(void) {
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char *p = malloc(512);
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memset(p, 0, 512);
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}
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