extravar.tree

linux下编程用 编译软件

// { dg-do compile }
// { dg-options "-fdump-tree-vars -O1 -Wunused-variable" }
external_definition int bar (int aaa, int ddd);

static int foo = -3;  // { dg-warning "defined but not used" }

bar
{
	automatic int ccc;

	return aaa + ddd + +3;
}
// { dg-final { scan-tree-dump-not "ccc" "vars" } }
// { dg-final { cleanup-tree-dump "vars" } }