https://sourceware.org/bugzilla/show_bug.cgi?id=22014
Bug ID: 22014
Summary: as(1) in microMIPS mode: illegal use of memcpy with
overlapping addresses
Product: binutils
Version: 2.29
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gas
Assignee: unassigned at sourceware dot org
Reporter: awilfox at adelielinux dot org
Target Milestone: ---
Created attachment 10371
--> https://sourceware.org/bugzilla/attachment.cgi?id=10371&action=edit
Change memcpy to memmove in mips_lookup_insn
Using microMIPS, given an instruction with a size suffix (i.e. "add16.ps"),
as(1) will perform an overlapping memcpy to look up the instruction without the
suffix. This causes SIGILL when using Portable Fortify, SIGABRT on musl libc,
and can cause invalid bytes to be written when compiled with icc (Intel C
Compiler) 12.0 or higher.
Attached patch changes memcpy to memmove, solving all of these cases.
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