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[Bug target/82820] [arm32]ldm/stm instructions Bus error while running with 64bit kernel
- From: "pinskia at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 03 Nov 2017 03:58:22 +0000
- Subject: [Bug target/82820] [arm32]ldm/stm instructions Bus error while running with 64bit kernel
- Auto-submitted: auto-generated
- References: <bug-82820-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82820
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
> B *pb = (B *)(buf + 1);
You are causing pb to be unaligned so this code is undefined which is why it
crashes on arm32 while running on the arm64 kernel.