------- Comment #35 from hjl dot tools at gmail dot com 2009-01-21 03:27 ------- (In reply to comment #34) > C standard guarantees that automatic variable only with volatile will be > restored after longjmp. Gcc puts volatiles on stack and don't use pseudos for > them. So they will be never shared on stack. > > I think the code (its expected behavior) does not conform with the standard. > > Unfortunately there are a lot of code which does not conform with the > standard. > So I think we should provide the same functionality. It can be done by > prohibiting stack slot sharing in IRA if there are setjmps in the function. >
Does C standard say anything about function argument? "system", which is a function argument, is trashed here. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38587
