Merge pull request #7584 from gilles-peskine-arm/fuzz-file-open-fail

Fuzz programs: print an error if loading the reproducer fails
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Dave Rodgman 2023-07-07 11:51:59 +01:00 committed by GitHub
commit c4749b1c66
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@ -14,34 +14,48 @@ int main(int argc, char **argv)
FILE *fp;
uint8_t *Data;
size_t Size;
const char *argv0 = argv[0] == NULL ? "PROGRAM_NAME" : argv[0];
if (argc != 2) {
fprintf(stderr, "Usage: %s REPRODUCER_FILE\n", argv0);
return 1;
}
//opens the file, get its size, and reads it into a buffer
fp = fopen(argv[1], "rb");
if (fp == NULL) {
fprintf(stderr, "%s: Error in fopen\n", argv0);
perror(argv[1]);
return 2;
}
if (fseek(fp, 0L, SEEK_END) != 0) {
fprintf(stderr, "%s: Error in fseek(SEEK_END)\n", argv0);
perror(argv[1]);
fclose(fp);
return 2;
}
Size = ftell(fp);
if (Size == (size_t) -1) {
fprintf(stderr, "%s: Error in ftell\n", argv0);
perror(argv[1]);
fclose(fp);
return 2;
}
if (fseek(fp, 0L, SEEK_SET) != 0) {
fprintf(stderr, "%s: Error in fseek(0)\n", argv0);
perror(argv[1]);
fclose(fp);
return 2;
}
Data = malloc(Size);
if (Data == NULL) {
fprintf(stderr, "%s: Could not allocate memory\n", argv0);
perror(argv[1]);
fclose(fp);
return 2;
}
if (fread(Data, Size, 1, fp) != 1) {
fprintf(stderr, "%s: Error in fread\n", argv0);
perror(argv[1]);
free(Data);
fclose(fp);
return 2;