crypto/rsa/rsa_x931g.c:161: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - 1):unsigned32 by call to `BN_X931_generate_Xpq`.
Showing all 14 steps of the trace


crypto/rsa/rsa_x931g.c:156:5: Call
154.           goto error;
155.   
156.       BN_CTX_start(ctx);
           ^
157.       Xp = BN_CTX_get(ctx);
158.       Xq = BN_CTX_get(ctx);

crypto/bn/bn_ctx.c:171:1: Parameter `ctx->stack.depth`
  169.   }
  170.   
  171. > void BN_CTX_start(BN_CTX *ctx)
  172.   {
  173.       CTXDBG("ENTER BN_CTX_start()", ctx);

crypto/rsa/rsa_x931g.c:161:10: Call
159.       if (Xq == NULL)
160.           goto error;
161.       if (!BN_X931_generate_Xpq(Xp, Xq, bits, ctx))
                ^
162.           goto error;
163.   

crypto/bn/bn_x931p.c:160:1: Parameter `ctx->stack.depth`
  158.    */
  159.   
  160. > int BN_X931_generate_Xpq(BIGNUM *Xp, BIGNUM *Xq, int nbits, BN_CTX *ctx)
  161.   {
  162.       BIGNUM *t;

crypto/bn/bn_x931p.c:179:5: Call
  177.           goto err;
  178.   
  179.       BN_CTX_start(ctx);
             ^
  180.       t = BN_CTX_get(ctx);
  181.       if (t == NULL)

crypto/bn/bn_ctx.c:171:1: Parameter `ctx->stack.depth`
    169.   }
    170.   
    171. > void BN_CTX_start(BN_CTX *ctx)
    172.   {
    173.       CTXDBG("ENTER BN_CTX_start()", ctx);

crypto/bn/bn_x931p.c:180:9: Call
  178.   
  179.       BN_CTX_start(ctx);
  180.       t = BN_CTX_get(ctx);
                 ^
  181.       if (t == NULL)
  182.           goto err;

crypto/bn/bn_ctx.c:202:1: Parameter `ctx->stack.depth`
    200.   }
    201.   
    202. > BIGNUM *BN_CTX_get(BN_CTX *ctx)
    203.   {
    204.       BIGNUM *ret;

crypto/bn/bn_x931p.c:195:5: Call
  193.       }
  194.   
  195.       BN_CTX_end(ctx);
             ^
  196.   
  197.       if (i < 1000)

crypto/bn/bn_ctx.c:185:1: Parameter `ctx->stack.depth`
    183.   }
    184.   
    185. > void BN_CTX_end(BN_CTX *ctx)
    186.   {
    187.       CTXDBG("ENTER BN_CTX_end()", ctx);

crypto/bn/bn_ctx.c:191:27: Call
    189.           ctx->err_stack--;
    190.       else {
    191.           unsigned int fp = BN_STACK_pop(&ctx->stack);
                                     ^
    192.           /* Does this stack frame have anything to release? */
    193.           if (fp < ctx->used)

crypto/bn/bn_ctx.c:266:1: <LHS trace>
264.   }
265.   
266. > static unsigned int BN_STACK_pop(BN_STACK *st)
267.   {
268.       return st->indexes[--(st->depth)];

crypto/bn/bn_ctx.c:266:1: Parameter `st->depth`
      264.   }
      265.   
      266. > static unsigned int BN_STACK_pop(BN_STACK *st)
      267.   {
      268.       return st->indexes[--(st->depth)];

crypto/bn/bn_ctx.c:268:12: Binary operation: ([0, +oo] - 1):unsigned32 by call to `BN_X931_generate_Xpq` 
      266.   static unsigned int BN_STACK_pop(BN_STACK *st)
      267.   {
      268.       return st->indexes[--(st->depth)];
                        ^
      269.   }
      270.   

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,\n                             BN_GENCB *cb)\n{\n    int ok = 0;\n    BIGNUM *Xp = NULL, *Xq = NULL;\n    BN_CTX *ctx = NULL;\n    ctx = BN_CTX_new();\n    if (ctx == NULL)\n        goto error;\n    BN_CTX_start(ctx);\n    Xp = BN_CTX_get(ctx);\n    Xq = BN_CTX_get(ctx);\n    if (Xq == NULL)\n        goto error;\n    if (!BN_X931_generate_Xpq(Xp, Xq, bits, ctx))\n        goto error;\n    rsa->p = BN_new();\n    rsa->q = BN_new();\n    if (rsa->p == NULL || rsa->q == NULL)\n        goto error;\n    if (!BN_X931_generate_prime_ex(rsa->p, NULL, NULL, NULL, NULL, Xp,\n                                   e, ctx, cb))\n        goto error;\n    if (!BN_X931_generate_prime_ex(rsa->q, NULL, NULL, NULL, NULL, Xq,\n                                   e, ctx, cb))\n        goto error;\n    if (!RSA_X931_derive_ex(rsa, NULL, NULL, NULL, NULL,\n                            NULL, NULL, NULL, NULL, NULL, NULL, e, cb))\n        goto error;\n    ok = 1;\n error:\n    if (ctx)\n        BN_CTX_end(ctx);\n    BN_CTX_free(ctx);\n    if (ok)\n        return 1;\n    return 0;\n}', 'void BN_CTX_start(BN_CTX *ctx)\n{\n    CTXDBG("ENTER BN_CTX_start()", ctx);\n    if (ctx->err_stack || ctx->too_many)\n        ctx->err_stack++;\n    else if (!BN_STACK_push(&ctx->stack, ctx->used)) {\n        BNerr(BN_F_BN_CTX_START, BN_R_TOO_MANY_TEMPORARY_VARIABLES);\n        ctx->err_stack++;\n    }\n    CTXDBG("LEAVE BN_CTX_start()", ctx);\n}', 'int BN_X931_generate_Xpq(BIGNUM *Xp, BIGNUM *Xq, int nbits, BN_CTX *ctx)\n{\n    BIGNUM *t;\n    int i;\n    if ((nbits < 1024) || (nbits & 0xff))\n        return 0;\n    nbits >>= 1;\n    if (!BN_priv_rand(Xp, nbits, BN_RAND_TOP_TWO, BN_RAND_BOTTOM_ANY))\n        goto err;\n    BN_CTX_start(ctx);\n    t = BN_CTX_get(ctx);\n    if (t == NULL)\n        goto err;\n    for (i = 0; i < 1000; i++) {\n        if (!BN_priv_rand(Xq, nbits, BN_RAND_TOP_TWO, BN_RAND_BOTTOM_ANY))\n            goto err;\n        if (!BN_sub(t, Xp, Xq))\n            goto err;\n        if (BN_num_bits(t) > (nbits - 100))\n            break;\n    }\n    BN_CTX_end(ctx);\n    if (i < 1000)\n        return 1;\n    return 0;\n err:\n    BN_CTX_end(ctx);\n    return 0;\n}', 'BIGNUM *BN_CTX_get(BN_CTX *ctx)\n{\n    BIGNUM *ret;\n    CTXDBG("ENTER BN_CTX_get()", ctx);\n    if (ctx->err_stack || ctx->too_many)\n        return NULL;\n    if ((ret = BN_POOL_get(&ctx->pool, ctx->flags)) == NULL) {\n        ctx->too_many = 1;\n        BNerr(BN_F_BN_CTX_GET, BN_R_TOO_MANY_TEMPORARY_VARIABLES);\n        return NULL;\n    }\n    BN_zero(ret);\n    ret->flags &= (~BN_FLG_CONSTTIME);\n    ctx->used++;\n    CTXDBG("LEAVE BN_CTX_get()", ctx);\n    return ret;\n}', 'void BN_CTX_end(BN_CTX *ctx)\n{\n    CTXDBG("ENTER BN_CTX_end()", ctx);\n    if (ctx->err_stack)\n        ctx->err_stack--;\n    else {\n        unsigned int fp = BN_STACK_pop(&ctx->stack);\n        if (fp < ctx->used)\n            BN_POOL_release(&ctx->pool, ctx->used - fp);\n        ctx->used = fp;\n        ctx->too_many = 0;\n    }\n    CTXDBG("LEAVE BN_CTX_end()", ctx);\n}', 'static unsigned int BN_STACK_pop(BN_STACK *st)\n{\n    return st->indexes[--(st->depth)];\n}']