re PR lto/69866 (lto1: internal compiler error: in add_symbol_to_partition_1, at lto/lto-partition.c:158)


	PR lto/69866
	* lto-symtab.c (lto_symtab_merge_symbols): Drop useless definitions
	that resolved externally.

	* gcc.dg/lto/pr69866_0.c: New test.
	* gcc.dg/lto/pr69866_1.c: Likewise.

From-SVN: r249224