crypto/rsa/rsa_x931g.c:239: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - 1):unsigned32 by call to `BN_X931_generate_Xpq`.
Showing all 12 steps of the trace


crypto/rsa/rsa_x931g.c:236:2: Call
234.   		goto error;
235.   
236.   	BN_CTX_start(ctx);
        ^
237.   	Xp = BN_CTX_get(ctx);
238.   	Xq = BN_CTX_get(ctx);

crypto/bn/bn_ctx.c:257:1: Parameter `ctx->stack.depth`
  255.   	}
  256.   
  257. > void BN_CTX_start(BN_CTX *ctx)
  258.   	{
  259.   	CTXDBG_ENTRY("BN_CTX_start", ctx);

crypto/rsa/rsa_x931g.c:239:7: Call
237.   	Xp = BN_CTX_get(ctx);
238.   	Xq = BN_CTX_get(ctx);
239.   	if (!BN_X931_generate_Xpq(Xp, Xq, bits, ctx))
             ^
240.   		goto error;
241.   

crypto/bn/bn_x931p.c:196:1: Parameter `ctx->stack.depth`
  194.    */
  195.   
  196. > int BN_X931_generate_Xpq(BIGNUM *Xp, BIGNUM *Xq, int nbits, BN_CTX *ctx)
  197.   	{
  198.   	BIGNUM *t;

crypto/bn/bn_x931p.c:213:2: Call
  211.   		return 0;
  212.   
  213.   	BN_CTX_start(ctx);
          ^
  214.   	t = BN_CTX_get(ctx);
  215.   

crypto/bn/bn_ctx.c:257:1: Parameter `ctx->stack.depth`
    255.   	}
    256.   
    257. > void BN_CTX_start(BN_CTX *ctx)
    258.   	{
    259.   	CTXDBG_ENTRY("BN_CTX_start", ctx);

crypto/bn/bn_x931p.c:226:2: Call
  224.   		}
  225.   
  226.   	BN_CTX_end(ctx);
          ^
  227.   
  228.   	if (i < 1000)

crypto/bn/bn_ctx.c:272:1: Parameter `ctx->stack.depth`
    270.   	}
    271.   
    272. > void BN_CTX_end(BN_CTX *ctx)
    273.   	{
    274.   	CTXDBG_ENTRY("BN_CTX_end", ctx);

crypto/bn/bn_ctx.c:279:21: Call
    277.   	else
    278.   		{
    279.   		unsigned int fp = BN_STACK_pop(&ctx->stack);
                               ^
    280.   		/* Does this stack frame have anything to release? */
    281.   		if(fp < ctx->used)

crypto/bn/bn_ctx.c:353:1: <LHS trace>
351.   	}
352.   
353. > static unsigned int BN_STACK_pop(BN_STACK *st)
354.   	{
355.   	return st->indexes[--(st->depth)];

crypto/bn/bn_ctx.c:353:1: Parameter `st->depth`
      351.   	}
      352.   
      353. > static unsigned int BN_STACK_pop(BN_STACK *st)
      354.   	{
      355.   	return st->indexes[--(st->depth)];

crypto/bn/bn_ctx.c:355:9: Binary operation: ([0, +oo] - 1):unsigned32 by call to `BN_X931_generate_Xpq` 
      353.   static unsigned int BN_STACK_pop(BN_STACK *st)
      354.   	{
      355.   	return st->indexes[--(st->depth)];
                     ^
      356.   	}
      357.   

static unsigned int BN_STACK_pop(BN_STACK *st)
	{
	return st->indexes[--(st->depth)];
	}
['int RSA_X931_generate_key_ex(RSA *rsa, int bits, const BIGNUM *e, BN_GENCB *cb)\n\t{\n\tint ok = 0;\n\tBIGNUM *Xp = NULL, *Xq = NULL;\n\tBN_CTX *ctx = NULL;\n#ifdef OPENSSL_FIPS\n\tif (bits < OPENSSL_RSA_FIPS_MIN_MODULUS_BITS)\n\t    {\n\t    FIPSerr(FIPS_F_RSA_X931_GENERATE_KEY_EX,FIPS_R_KEY_TOO_SHORT);\n\t    return 0;\n\t    }\n\tif (bits & 0xff)\n\t    {\n\t    FIPSerr(FIPS_F_RSA_X931_GENERATE_KEY_EX,FIPS_R_INVALID_KEY_LENGTH);\n\t    return 0;\n\t    }\n\tif(FIPS_selftest_failed())\n\t    {\n\t    FIPSerr(FIPS_F_RSA_X931_GENERATE_KEY_EX,FIPS_R_FIPS_SELFTEST_FAILED);\n\t    return 0;\n\t    }\n#endif\n\tctx = BN_CTX_new();\n\tif (!ctx)\n\t\tgoto error;\n\tBN_CTX_start(ctx);\n\tXp = BN_CTX_get(ctx);\n\tXq = BN_CTX_get(ctx);\n\tif (!BN_X931_generate_Xpq(Xp, Xq, bits, ctx))\n\t\tgoto error;\n\trsa->p = BN_new();\n\trsa->q = BN_new();\n\tif (!rsa->p || !rsa->q)\n\t\tgoto error;\n\tif (!BN_X931_generate_prime_ex(rsa->p, NULL, NULL, NULL, NULL, Xp,\n\t\t\t\t\te, ctx, cb))\n\t\tgoto error;\n\tif (!BN_X931_generate_prime_ex(rsa->q, NULL, NULL, NULL, NULL, Xq,\n\t\t\t\t\te, ctx, cb))\n\t\tgoto error;\n\tif (!RSA_X931_derive_ex(rsa, NULL, NULL, NULL, NULL,\n\t\t\t\tNULL, NULL, NULL, NULL, NULL, NULL, e, cb))\n\t\tgoto error;\n#ifdef OPENSSL_FIPS\n\tif(!fips_check_rsa(rsa))\n\t    goto error;\n#endif\n\tok = 1;\n\terror:\n\tif (ctx)\n\t\t{\n\t\tBN_CTX_end(ctx);\n\t\tBN_CTX_free(ctx);\n\t\t}\n\tif (ok)\n\t\treturn 1;\n\treturn 0;\n\t}', 'void BN_CTX_start(BN_CTX *ctx)\n\t{\n\tCTXDBG_ENTRY("BN_CTX_start", ctx);\n\tif(ctx->err_stack || ctx->too_many)\n\t\tctx->err_stack++;\n\telse if(!BN_STACK_push(&ctx->stack, ctx->used))\n\t\t{\n\t\tBNerr(BN_F_BN_CTX_START,BN_R_TOO_MANY_TEMPORARY_VARIABLES);\n\t\tctx->err_stack++;\n\t\t}\n\tCTXDBG_EXIT(ctx);\n\t}', 'int BN_X931_generate_Xpq(BIGNUM *Xp, BIGNUM *Xq, int nbits, BN_CTX *ctx)\n\t{\n\tBIGNUM *t;\n\tint i;\n\tif ((nbits < 1024) || (nbits & 0xff))\n\t\treturn 0;\n\tnbits >>= 1;\n\tif (!BN_rand(Xp, nbits, 1, 0))\n\t\treturn 0;\n\tBN_CTX_start(ctx);\n\tt = BN_CTX_get(ctx);\n\tfor (i = 0; i < 1000; i++)\n\t\t{\n\t\tif (!BN_rand(Xq, nbits, 1, 0))\n\t\t\treturn 0;\n\t\tBN_sub(t, Xp, Xq);\n\t\tif (BN_num_bits(t) > (nbits - 100))\n\t\t\tbreak;\n\t\t}\n\tBN_CTX_end(ctx);\n\tif (i < 1000)\n\t\treturn 1;\n\treturn 0;\n\t}', 'void BN_CTX_end(BN_CTX *ctx)\n\t{\n\tCTXDBG_ENTRY("BN_CTX_end", ctx);\n\tif(ctx->err_stack)\n\t\tctx->err_stack--;\n\telse\n\t\t{\n\t\tunsigned int fp = BN_STACK_pop(&ctx->stack);\n\t\tif(fp < ctx->used)\n\t\t\tBN_POOL_release(&ctx->pool, ctx->used - fp);\n\t\tctx->used = fp;\n\t\tctx->too_many = 0;\n\t\t}\n\tCTXDBG_EXIT(ctx);\n\t}', 'static unsigned int BN_STACK_pop(BN_STACK *st)\n\t{\n\treturn st->indexes[--(st->depth)];\n\t}']