re PR lto/48954 (ICE: SIGSEGV in bitmap_count_bits (bitmap.c:719) with -O2 -flto -fno-early-inlining -fkeep-inline-functions)


	PR lto/48954
	* lto-cgraph.c (output_node_opt_summary): Handle NULL skip args bitmaps.
	* g++.dg/torture/pr48954.C: New testcase.

From-SVN: r174644