On 2020-06-16 16:11:53 +0200, Vincent Lefevre wrote: > Note that I'm rather surprised to see that the issue disappears > if I add unrelated code. For instance, in the following testcase, > with GCC 9.1.0 -O2, I get "h = 0xffffffffffffffff", which is > incorrect, but if I define V, I get the correct "h = 0x0".
Defining V apparently disables some optimization, so that only the "else" case of sub_ddmmss is used. Note: in the tests, it is important to test the macro on constants in order to test the "if" case. -- Vincent Lefèvre <vinc...@vinc17.net> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon) _______________________________________________ gmp-bugs mailing list gmp-bugs@gmplib.org https://gmplib.org/mailman/listinfo/gmp-bugs
