[Bug target/113045] armv7l-unknown-linux-gnueabihf: valgrind error during build of libcc1

[schwab--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113045

--- Comment #23 from Andreas Schwab <sch...@linux-m68k.org> ---
valgrind replaces str/mem functions with its own versions so that it can do
better checking and avoid false positives.