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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/59674] On m68k and vax variables stack variables with > MAX_STACK_ALIGNMENT make ssp fail Date: Fri, 16 Jan 2015 18:56:00 -0000 [thread overview] Message-ID: <bug-59674-4-KbeTNBcRZC@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-59674-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59674 Jeffrey A. Law <law at redhat dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P3 |P5 CC| |law at redhat dot com --- Comment #10 from Jeffrey A. Law <law at redhat dot com> --- As Andreas stated, having an ABI where the alignment of fundamental data types is larger than the alignment of the stack will not work without significant development. Basically nothing guarantees that you stack is aligned enough to allow you to then align those fundamental types on the stack. To get the stack aligned properly you have to dynamically realigned the stack at function entry, much like what's done for x86. Without the dynamic stack alignment support, I would call the ABI used by m68k-netbsd fundamentally broken. Sigh. Downgrading to P5. m68k dynamic stack realignment isn't going to be a priority.
next prev parent reply other threads:[~2015-01-16 18:56 UTC|newest] Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-01-04 4:14 [Bug c/59674] New: " christos at zoulas dot com 2014-01-04 11:20 ` [Bug c/59674] " mikpelinux at gmail dot com 2014-01-04 17:22 ` mikpelinux at gmail dot com 2014-01-04 19:31 ` christos at zoulas dot com 2014-01-04 20:42 ` mikpelinux at gmail dot com 2014-01-04 21:21 ` christos at zoulas dot com 2014-01-04 21:49 ` schwab@linux-m68k.org 2014-01-23 17:12 ` martin at netbsd dot org 2014-01-24 21:37 ` [Bug target/59674] " schwab@linux-m68k.org 2015-01-16 18:56 ` law at redhat dot com [this message] 2015-01-16 20:04 ` law at redhat dot com
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