[gnutls-devel] libtasn1 | Add initial fuzzing implementation (!38)

[Development of GNU's TLS library]

Nikos Mavrogiannopoulos started a new discussion on fuzz/libtasn1_parser2tree_fuzzer.c: https://gitlab.com/gnutls/libtasn1/merge_requests/38#note_198237036

> +#include <config.h>
> +
> +#include <stdlib.h> // malloc, free
> +#include <string.h> // strcmp, memcpy
> +
> +#include "libtasn1.h"
> +#include "fuzzer.h"
> +
> +static const uint8_t *g_data;
> +static size_t g_size;
> +
> +//#if defined HAVE_DLFCN_H && defined HAVE_FMEMOPEN
> +#include <dlfcn.h>
> +#ifdef RTLD_NEXT /* Not defined e.g. on CygWin */
> +
> +FILE *fopen(const char *pathname, const char *mode) {

Is there some way we can ensure that fopen is being called? Should we use a global var which will be used to assert if not called?

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