Fix memory corruption when using memcpy to overwtite a string in place.

	PR 22014
	* config/tc-mips.c (mips_lookup_insn): Use memmove to strip the
	instruction size suffix.

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 6eb20f0b86ea7ab730b339a28967c105c701988d..3a0bbd7abee71b442a525d66df26a575a7070d78 100644 (file)
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,9 @@
+2018-02-22  A. Wilcox  <awilfox@adelielinux.org>
+
+       PR 22014
+       * config/tc-mips.c (mips_lookup_insn): Use memmove to strip the
+       instruction size suffix.
+
 2017-12-12  Alan Modra  <amodra@gmail.com>
 
        PR 21118

diff --git a/gas/config/tc-mips.c b/gas/config/tc-mips.c
index 618de6c6e5707fec41d6fab07f03c56f2306e709..1727996db0219948e0c531d7677233b6887f04f2 100644 (file)
--- a/gas/config/tc-mips.c
+++ b/gas/config/tc-mips.c
@@ -13956,7 +13956,7 @@ mips_lookup_insn (struct hash_control *hash, const char *start,
        suffix = 0;
       if (suffix)
        {
-         memcpy (name + opend - 2, name + opend, length - opend + 1);
+         memmove (name + opend - 2, name + opend, length - opend + 1);
          insn = (struct mips_opcode *) hash_find (hash, name);
          if (insn)
            {