https://bugs.kde.org/show_bug.cgi?id=295403
Matt Cowell <matt.cow...@nokia.com> changed:
What |Removed |Added
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CC| |matt.cow...@nokia.com
--- Comment #1 from Matt Cowell <matt.cow...@nokia.com> ---
Created attachment 101695
--> https://bugs.kde.org/attachment.cgi?id=101695&action=edit
Increase allowed offsets for ARM early writeback of SP base register in strd
GCC 5.4 (and likely all versions 4.8+) have a larger (unlimited?) range for
using strd to allocate the stack frame, at least when compiling with
-mcpu=cortex-a15. ld.so and libc compiled with GCC 5.4 have offsets up to
#-40: "strd r3, r4, [sp, #-40]!".
Without this fix, hundreds of "Invalid write of size 4" ... "below stack
pointer" errors are logged, starting in ld-*.so, which of course leads to
millions of "uninitialised value" errors being logged, and valgrind becomes
useless on ARMv7 / Cortex A15.
This simply removes the check for a -8 or -16 byte offset, since all offsets
should be allowable for allocating a stack frame.
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