Merge pull request #51 from chrisZgh/master

Corrected undefined behavior in overflow of int
data61 · Dec 21, 2019 · d28a83f · d28a83f
2 parents dad23a6 + 9d47211
commit d28a83f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/Math/Zp_Data.cpp b/Math/Zp_Data.cpp
@@ -17,7 +17,7 @@ void Zp_Data::init(const bigint& p,bool mont)
 #endif
 
   pr=p;
-  mask=(1LL<<((mpz_sizeinbase(pr.get_mpz_t(),2)-1)%(8*sizeof(mp_limb_t))))-1;
+  mask=static_cast<mp_limb_t>(1ULL<<((mpz_sizeinbase(pr.get_mpz_t(),2)-1)%(8*sizeof(mp_limb_t))))-1);	
   pr_byte_length = numBytes(pr);
   pr_bit_length = numBits(pr);
   int k = pr_bit_length;