[PATCH] Fix -Wsystem-header warnings in libstdc++

[Jonathan Wakely]

This fixes a number of warnings that show up with -Wsystem-headers

Tested powerpc64le-linux, committed to trunk.


-------------- next part --------------
A non-text attachment was scrubbed...
Name: patch.txt
Type: text/x-patch
Size: 6371 bytes
Desc: not available
URL: <http://gcc.gnu.org/pipermail/libstdc++/attachments/20171201/4d298d0a/attachment.bin>