http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54412
--- Comment #4 from R Copley <rcopley at gmail dot com> --- (In reply to Kai Tietz from comment #1) > MS' abi doesn't allow this. So I doubt we will be able to implement that > for this target. If we want to re-align stack on function-base we will run > into troubles with SEH-information. You might be right, I'm not sure. Are you aware that on 64-bit Windows, SEH is table-based, not frame-based (see, e.g., http://www.osronline.com/article.cfm?article=469)? > Doesn't it work to align explicit the variable itself? No (see attachments 2 and 3). If I understand correctly, the alignment specification is redundant anyway, because the variables are supposed to be naturally aligned, on their size. Assembling attachment 3 with "-g" and running it in gdb gives: Program received signal SIGSEGV, Segmentation fault. main () at bug1.s:46 46 vmovapd %ymm0, -96(%rbp) Thanks.
