Hi, On Wed, Dec 14, 2016 at 12:44 AM, Dominique Pellé <dominique.pe...@gmail.com> wrote: > 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: >
Yes. I forgot to include the relevant code information in my e-mail. > > 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. > I am building Vim (8.0.133) on MacOS with the following sanitizer flags: SANITIZER_CFLAGS = -g -O0 -fsanitize=address,undefined -fno-omit-frame-pointer I am using the tools from the latest Xcode 8.2. I am not sure how to fix these errors though. Regards, Yegappan > >> 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 vim_dev+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
