crypto/rsa/rsa_pk1.c:196: 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_pk1.c:154:1: Parameter `*from`
152.   }
153.   
154. > int RSA_padding_check_PKCS1_type_2(unsigned char *to, int tlen,
155.                                      const unsigned char *from, int flen,
156.                                      int num)

crypto/rsa/rsa_pk1.c:193:9: Assignment
191.           flen -= 1 & mask;
192.           from -= 1 & mask;
193.           *--em = *from & mask;
               ^
194.       }
195.   

crypto/rsa/rsa_pk1.c:196:12: Call
194.       }
195.   
196.       good = constant_time_is_zero(em[0]);
                  ^
197.       good &= constant_time_eq(em[1], 2);
198.   

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.   
