crypto/bn/bn_mont.c:172: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - 1):unsigned32 by call to `BN_CTX_end`.
Showing all 8 steps of the trace


crypto/bn/bn_mont.c:155:14: Call
153.       bn_check_top(tmp);
154.       if (a == b) {
155.           if (!BN_sqr(tmp, a, ctx))
                    ^
156.               goto err;
157.       } else {

crypto/bn/bn_sqr.c:66:1: Parameter `ctx->pool.used`
  64.    * I've just gone over this and it is now %20 faster on x86 - eay - 27 Jun 96
  65.    */
  66. > int BN_sqr(BIGNUM *r, const BIGNUM *a, BN_CTX *ctx)
  67.   {
  68.       int max, al;

crypto/bn/bn_mont.c:172:5: Call
170.       ret = 1;
171.    err:
172.       BN_CTX_end(ctx);
           ^
173.       return (ret);
174.   }

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;
