crypto/rsa/rsa_oaep.c:189: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - 1):unsigned32 by call to `constant_time_is_zero`.
Showing all 6 steps of the trace


crypto/rsa/rsa_oaep.c:116:1: Parameter `*from`
114.   }
115.   
116. > int RSA_padding_check_PKCS1_OAEP_mgf1(unsigned char *to, int tlen,
117.                                         const unsigned char *from, int flen,
118.                                         int num, const unsigned char *param,

crypto/rsa/rsa_oaep.c:180:9: Assignment
178.           flen -= 1 & mask;
179.           from -= 1 & mask;
180.           *--em = *from & mask;
               ^
181.       }
182.       from = em;

crypto/rsa/rsa_oaep.c:189:12: Call
187.        * Optimal Asymmetric Encryption Padding (OAEP) [...]", CRYPTO 2001).
188.        */
189.       good = constant_time_is_zero(from[0]);
                  ^
190.   
191.       maskedseed = from + 1;

include/internal/constant_time_locl.h:164:1: <LHS trace>
162.   }
163.   
164. > static ossl_inline unsigned int constant_time_is_zero(unsigned int a)
165.   {
166.       return constant_time_msb(~a & (a - 1));

include/internal/constant_time_locl.h:164:1: Parameter `a`
  162.   }
  163.   
  164. > static ossl_inline unsigned int constant_time_is_zero(unsigned int a)
  165.   {
  166.       return constant_time_msb(~a & (a - 1));

include/internal/constant_time_locl.h:166:12: Binary operation: ([0, +oo] - 1):unsigned32 by call to `constant_time_is_zero` 
  164.   static ossl_inline unsigned int constant_time_is_zero(unsigned int a)
  165.   {
  166.       return constant_time_msb(~a & (a - 1));
                    ^
  167.   }
  168.   
