r269925 - in /trunk/gcc: ChangeLog dwarf2out.c ...

[law@gcc.gnu.org]

Author: law
Date: Mon Mar 25 21:19:09 2019
New Revision: 269925

URL: https://gcc.gnu.org/viewcvs?rev=269925&root=gcc&view=rev
Log:
	PR debug/86964
	* dwarf2out.c (premark_used_variables): New function.
	(prune_unused_types_walk): Do not mark not premarked external
	variables.
	(prune_unused_types): Call premark_used_variables.

	* gcc.dg/debug/dwarf2/pr86964.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/debug/dwarf2/pr86964.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/dwarf2out.c
    trunk/gcc/testsuite/ChangeLog