Applying a more focussed fix, as suggested by Richard.
nathan -- Nathan Sidwell
2018-11-20 Nathan Sidwell <nat...@acm.org> PR 87926 * Makefile.in (bitmap.o-warn): Use -Wno-error=array-bounds. Index: Makefile.in =================================================================== --- Makefile.in (revision 266318) +++ Makefile.in (working copy) @@ -221,7 +221,7 @@ libgcov-merge-tool.o-warn = -Wno-error gimple-match.o-warn = -Wno-unused generic-match.o-warn = -Wno-unused dfp.o-warn = -Wno-strict-aliasing -bitmap.o-warn = -Wno-error # PR 87926 +bitmap.o-warn = -Wno-error=array-bounds # PR 87926 # All warnings have to be shut off in stage1 if the compiler used then # isn't gcc; configure determines that. WARN_CFLAGS will be either