ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, char *value)
{
    BIGNUM *bn = NULL;
    ASN1_INTEGER *aint;
    int isneg, ishex;
    int ret;
    if (value == NULL) {
        X509V3err(X509V3_F_S2I_ASN1_INTEGER, X509V3_R_INVALID_NULL_VALUE);
        return NULL;
    }
    bn = BN_new();
    if (bn == NULL) {
        X509V3err(X509V3_F_S2I_ASN1_INTEGER, ERR_R_MALLOC_FAILURE);
        return NULL;
    }
    if (value[0] == '-') {
        value++;
        isneg = 1;
    } else
        isneg = 0;
    if (value[0] == '0' && ((value[1] == 'x') || (value[1] == 'X'))) {
        value += 2;
        ishex = 1;
    } else
        ishex = 0;
    if (ishex)
        ret = BN_hex2bn(&bn, value);
    else
        ret = BN_dec2bn(&bn, value);
    if (!ret || value[ret]) {
        BN_free(bn);
        X509V3err(X509V3_F_S2I_ASN1_INTEGER, X509V3_R_BN_DEC2BN_ERROR);
        return NULL;
    }
    if (isneg && BN_is_zero(bn))
        isneg = 0;
    aint = BN_to_ASN1_INTEGER(bn, NULL);
    BN_free(bn);
    if (!aint) {
        X509V3err(X509V3_F_S2I_ASN1_INTEGER,
                  X509V3_R_BN_TO_ASN1_INTEGER_ERROR);
        return NULL;
    }
    if (isneg)
        aint->type |= V_ASN1_NEG;
    return aint;
}
["ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, char *value)\n{\n    BIGNUM *bn = NULL;\n    ASN1_INTEGER *aint;\n    int isneg, ishex;\n    int ret;\n    if (value == NULL) {\n        X509V3err(X509V3_F_S2I_ASN1_INTEGER, X509V3_R_INVALID_NULL_VALUE);\n        return NULL;\n    }\n    bn = BN_new();\n    if (bn == NULL) {\n        X509V3err(X509V3_F_S2I_ASN1_INTEGER, ERR_R_MALLOC_FAILURE);\n        return NULL;\n    }\n    if (value[0] == '-') {\n        value++;\n        isneg = 1;\n    } else\n        isneg = 0;\n    if (value[0] == '0' && ((value[1] == 'x') || (value[1] == 'X'))) {\n        value += 2;\n        ishex = 1;\n    } else\n        ishex = 0;\n    if (ishex)\n        ret = BN_hex2bn(&bn, value);\n    else\n        ret = BN_dec2bn(&bn, value);\n    if (!ret || value[ret]) {\n        BN_free(bn);\n        X509V3err(X509V3_F_S2I_ASN1_INTEGER, X509V3_R_BN_DEC2BN_ERROR);\n        return NULL;\n    }\n    if (isneg && BN_is_zero(bn))\n        isneg = 0;\n    aint = BN_to_ASN1_INTEGER(bn, NULL);\n    BN_free(bn);\n    if (!aint) {\n        X509V3err(X509V3_F_S2I_ASN1_INTEGER,\n                  X509V3_R_BN_TO_ASN1_INTEGER_ERROR);\n        return NULL;\n    }\n    if (isneg)\n        aint->type |= V_ASN1_NEG;\n    return aint;\n}", 'BIGNUM *BN_new(void)\n{\n    BIGNUM *ret;\n    if ((ret = OPENSSL_zalloc(sizeof(*ret))) == NULL) {\n        BNerr(BN_F_BN_NEW, ERR_R_MALLOC_FAILURE);\n        return (NULL);\n    }\n    ret->flags = BN_FLG_MALLOCED;\n    bn_check_top(ret);\n    return (ret);\n}', 'void *CRYPTO_zalloc(size_t num, const char *file, int line)\n{\n    void *ret = CRYPTO_malloc(num, file, line);\n    if (ret != NULL)\n        memset(ret, 0, num);\n    return ret;\n}', 'void *CRYPTO_malloc(size_t num, const char *file, int line)\n{\n    void *ret = NULL;\n    if (num <= 0)\n        return NULL;\n    allow_customize = 0;\n#ifndef OPENSSL_NO_CRYPTO_MDEBUG\n    if (call_malloc_debug) {\n        CRYPTO_mem_debug_malloc(NULL, num, 0, file, line);\n        ret = malloc(num);\n        CRYPTO_mem_debug_malloc(ret, num, 1, file, line);\n    } else {\n        ret = malloc(num);\n    }\n#else\n    (void)file;\n    (void)line;\n    ret = malloc(num);\n#endif\n#ifndef OPENSSL_CPUID_OBJ\n    if (ret && (num > 2048)) {\n        extern unsigned char cleanse_ctr;\n        ((unsigned char *)ret)[0] = cleanse_ctr;\n    }\n#endif\n    return ret;\n}']