crypto/ec/ec2_smpl.c:750: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - 1):unsigned32 by call to `BN_CTX_end`.
Showing all 11 steps of the trace


crypto/ec/ec2_smpl.c:715:1: Parameter `ctx->pool.used`
713.   
714.   /* Forces the given EC_POINT to internally use affine coordinates. */
715. > int ec_GF2m_simple_make_affine(const EC_GROUP *group, EC_POINT *point,
716.                                  BN_CTX *ctx)
717.   {

crypto/ec/ec2_smpl.c:732:9: Call
730.   
731.       BN_CTX_start(ctx);
732.       x = BN_CTX_get(ctx);
               ^
733.       y = BN_CTX_get(ctx);
734.       if (y == NULL)

crypto/bn/bn_ctx.c:271:1: Parameter `ctx->pool.used`
  269.   }
  270.   
  271. > BIGNUM *BN_CTX_get(BN_CTX *ctx)
  272.   {
  273.       BIGNUM *ret;

crypto/ec/ec2_smpl.c:733:9: Call
731.       BN_CTX_start(ctx);
732.       x = BN_CTX_get(ctx);
733.       y = BN_CTX_get(ctx);
               ^
734.       if (y == NULL)
735.           goto err;

crypto/bn/bn_ctx.c:271:1: Parameter `ctx->pool.used`
  269.   }
  270.   
  271. > BIGNUM *BN_CTX_get(BN_CTX *ctx)
  272.   {
  273.       BIGNUM *ret;

crypto/ec/ec2_smpl.c:750:9: Call
748.    err:
749.       if (ctx)
750.           BN_CTX_end(ctx);
               ^
751.       BN_CTX_free(new_ctx);
752.       return ret;

crypto/bn/bn_ctx.c:254:1: Parameter `ctx->pool.used`
  252.   }
  253.   
  254. > void BN_CTX_end(BN_CTX *ctx)
  255.   {
  256.       CTXDBG_ENTRY("BN_CTX_end", ctx);

crypto/bn/bn_ctx.c:263:13: Call
  261.           /* Does this stack frame have anything to release? */
  262.           if (fp < ctx->used)
  263.               BN_POOL_release(&ctx->pool, ctx->used - fp);
                     ^
  264.           ctx->used = fp;
  265.           /* Unjam "too_many" in case "get" had failed */

crypto/bn/bn_ctx.c:399:1: <LHS trace>
397.   }
398.   
399. > static void BN_POOL_release(BN_POOL *p, unsigned int num)
400.   {
401.       unsigned int offset = (p->used - 1) % BN_CTX_POOL_SIZE;

crypto/bn/bn_ctx.c:399:1: Parameter `p->used`
    397.   }
    398.   
    399. > static void BN_POOL_release(BN_POOL *p, unsigned int num)
    400.   {
    401.       unsigned int offset = (p->used - 1) % BN_CTX_POOL_SIZE;

crypto/bn/bn_ctx.c:401:5: Binary operation: ([0, +oo] - 1):unsigned32 by call to `BN_CTX_end` 
    399.   static void BN_POOL_release(BN_POOL *p, unsigned int num)
    400.   {
    401.       unsigned int offset = (p->used - 1) % BN_CTX_POOL_SIZE;
               ^
    402.   
    403.       p->used -= num;
