Yegappan Lakshmanan wrote: > Hi all, > > When running the Vim tests with UBSan, the following errors are > reported: > > channel.c:713:5: runtime error: load of misaligned address > 0x60b0000069ca for type 'char *', which requires 8 byte alignment > 0x60b0000069ca: note: pointer points here
Line 713 is is this for me: 713 memcpy((char *)&server.sin_addr, host->h_addr, host->h_length); I don't see this error with ubsan. A char* should not require 8 byte alignment anyway. Strange. > eval.c:4432:10: runtime error: negation of -9223372036854775808 cannot > be represented in type 'varnumber_T' (aka 'long long'); cast to an > unsigned type to negate this value to itself I see it too. It's coming from this line in Test_num64() in test_viml.vim: call assert_equal(-9223372036854775808, 0 / 0) Running :echo -9223372036854775808 also gives the ubsan error. viml parser is considering the number 9223372036854775808 (which is not a valid long long) and then negating it, instead of considering it as number -9223372036854775808 (which is a valid long long). Not sure how it can be fix. Even though it's undefined behavior, it probably works on all platforms in practice. The test would probably fail if it did not work. But it would be good to avoid undefined behavior. Dominique -- -- You received this message from the "vim_dev" maillist. Do not top-post! Type your reply below the text you are replying to. For more information, visit http://www.vim.org/maillist.php --- You received this message because you are subscribed to the Google Groups "vim_dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
