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[Bug other/51467] Stack Smashing Protector: Canary is destroyed in RAX partially only on x86_64
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 08 Dec 2011 15:21:16 +0000
- Subject: [Bug other/51467] Stack Smashing Protector: Canary is destroyed in RAX partially only on x86_64
- Auto-submitted: auto-generated
- References: <bug-51467-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51467
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |jakub at gcc dot gnu.org
Resolution| |INVALID
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-12-08 15:21:16 UTC ---
Please read the AMD64 architecture manuals.
xorl %eax, %eax is just a shorter alternative to xorq %rax, %rax, both clear
all 64 bits of that register.