crypto/dsa/dsa_asn1.c:72: error: NULL_DEREFERENCE
  pointer `sig` last assigned on line 71 could be null and is dereferenced at line 72, column 3.
Showing all 17 steps of the trace


crypto/dsa/dsa_asn1.c:66:1: start of procedure sig_cb()
64.   
65.   /* Override the default new methods */
66. > static int sig_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
67.   								void *exarg)
68.   {

crypto/dsa/dsa_asn1.c:69:5: Taking true branch
67.   								void *exarg)
68.   {
69.   	if(operation == ASN1_OP_NEW_PRE) {
          ^
70.   		DSA_SIG *sig;
71.   		sig = OPENSSL_malloc(sizeof(DSA_SIG));

crypto/dsa/dsa_asn1.c:71:3: 
69.   	if(operation == ASN1_OP_NEW_PRE) {
70.   		DSA_SIG *sig;
71. > 		sig = OPENSSL_malloc(sizeof(DSA_SIG));
72.   		sig->r = NULL;
73.   		sig->s = NULL;

crypto/mem.c:294:1: start of procedure CRYPTO_malloc()
  292.   	}
  293.   
  294. > void *CRYPTO_malloc(size_t num, const char *file, int line)
  295.   	{
  296.   	void *ret = NULL;

crypto/mem.c:296:2: 
  294.   void *CRYPTO_malloc(size_t num, const char *file, int line)
  295.   	{
  296. > 	void *ret = NULL;
  297.   
  298.   	if (num <= 0) return NULL;

crypto/mem.c:298:6: Taking false branch
  296.   	void *ret = NULL;
  297.   
  298.   	if (num <= 0) return NULL;
              ^
  299.   
  300.   	allow_customize = 0;

crypto/mem.c:300:2: 
  298.   	if (num <= 0) return NULL;
  299.   
  300. > 	allow_customize = 0;
  301.   	if (malloc_debug_func != NULL)
  302.   		{

crypto/mem.c:301:6: Taking true branch
  299.   
  300.   	allow_customize = 0;
  301.   	if (malloc_debug_func != NULL)
              ^
  302.   		{
  303.   		allow_customize_debug = 0;

crypto/mem.c:303:3: 
  301.   	if (malloc_debug_func != NULL)
  302.   		{
  303. > 		allow_customize_debug = 0;
  304.   		malloc_debug_func(NULL, num, file, line, 0);
  305.   		}

crypto/mem.c:304:3: Skipping __function_pointer__(): unresolved function pointer
  302.   		{
  303.   		allow_customize_debug = 0;
  304.   		malloc_debug_func(NULL, num, file, line, 0);
           ^
  305.   		}
  306.   	ret = malloc_ex_func(num,file,line);

crypto/mem.c:306:2: Skipping __function_pointer__(): unresolved function pointer
  304.   		malloc_debug_func(NULL, num, file, line, 0);
  305.   		}
  306.   	ret = malloc_ex_func(num,file,line);
          ^
  307.   #ifdef LEVITTE_DEBUG_MEM
  308.   	fprintf(stderr, "LEVITTE_DEBUG_MEM:         > 0x%p (%d)\n", ret, num);

crypto/mem.c:310:6: Taking true branch
  308.   	fprintf(stderr, "LEVITTE_DEBUG_MEM:         > 0x%p (%d)\n", ret, num);
  309.   #endif
  310.   	if (malloc_debug_func != NULL)
              ^
  311.   		malloc_debug_func(ret, num, file, line, 1);
  312.   

crypto/mem.c:311:3: Skipping __function_pointer__(): unresolved function pointer
  309.   #endif
  310.   	if (malloc_debug_func != NULL)
  311.   		malloc_debug_func(ret, num, file, line, 1);
           ^
  312.   
  313.   #ifndef OPENSSL_CPUID_OBJ

crypto/mem.c:317:12: Taking false branch
  315.            * sanitisation function can't be optimised out. NB: We only do
  316.            * this for >2Kb so the overhead doesn't bother us. */
  317.           if(ret && (num > 2048))
                    ^
  318.   	{	extern unsigned char cleanse_ctr;
  319.                   ((unsigned char *)ret)[0] = cleanse_ctr;

crypto/mem.c:323:2: 
  321.   #endif
  322.   
  323. > 	return ret;
  324.   	}
  325.   char *CRYPTO_strdup(const char *str, const char *file, int line)

crypto/mem.c:324:2: return from a call to CRYPTO_malloc
  322.   
  323.   	return ret;
  324.   	}
          ^
  325.   char *CRYPTO_strdup(const char *str, const char *file, int line)
  326.   	{

crypto/dsa/dsa_asn1.c:72:3: 
70.   		DSA_SIG *sig;
71.   		sig = OPENSSL_malloc(sizeof(DSA_SIG));
72. > 		sig->r = NULL;
73.   		sig->s = NULL;
74.   		*pval = (ASN1_VALUE *)sig;

static int sig_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
								void *exarg)
{
	if(operation == ASN1_OP_NEW_PRE) {
		DSA_SIG *sig;
		sig = OPENSSL_malloc(sizeof(DSA_SIG));
		sig->r = NULL;
		sig->s = NULL;
		*pval = (ASN1_VALUE *)sig;
		if(sig) return 2;
		DSAerr(DSA_F_SIG_CB, ERR_R_MALLOC_FAILURE);
		return 0;
	}
	return 1;
}
['static int sig_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,\n\t\t\t\t\t\t\t\tvoid *exarg)\n{\n\tif(operation == ASN1_OP_NEW_PRE) {\n\t\tDSA_SIG *sig;\n\t\tsig = OPENSSL_malloc(sizeof(DSA_SIG));\n\t\tsig->r = NULL;\n\t\tsig->s = NULL;\n\t\t*pval = (ASN1_VALUE *)sig;\n\t\tif(sig) return 2;\n\t\tDSAerr(DSA_F_SIG_CB, ERR_R_MALLOC_FAILURE);\n\t\treturn 0;\n\t}\n\treturn 1;\n}', 'void *CRYPTO_malloc(size_t num, const char *file, int line)\n\t{\n\tvoid *ret = NULL;\n\tif (num <= 0) return NULL;\n\tallow_customize = 0;\n\tif (malloc_debug_func != NULL)\n\t\t{\n\t\tallow_customize_debug = 0;\n\t\tmalloc_debug_func(NULL, num, file, line, 0);\n\t\t}\n\tret = malloc_ex_func(num,file,line);\n#ifdef LEVITTE_DEBUG_MEM\n\tfprintf(stderr, "LEVITTE_DEBUG_MEM:         > 0x%p (%d)\\n", ret, num);\n#endif\n\tif (malloc_debug_func != NULL)\n\t\tmalloc_debug_func(ret, num, file, line, 1);\n#ifndef OPENSSL_CPUID_OBJ\n        if(ret && (num > 2048))\n\t{\textern unsigned char cleanse_ctr;\n                ((unsigned char *)ret)[0] = cleanse_ctr;\n\t}\n#endif\n\treturn ret;\n\t}']