1 files changed, 12 insertions, 1 deletions
diff --git a/gcc/cp/lex.c b/gcc/cp/lex.c
index c5b14460b94..00adb7239c5 100644
--- a/gcc/cp/lex.c
+++ b/gcc/cp/lex.c
@@ -361,6 +361,17 @@ cxx_init (void)
 
   interface_unknown = 1;
 
+  /* The fact that G++ uses COMDAT for many entities (inline
+     functions, template instantiations, virtual tables, etc.) mean
+     that it is fundamentally unreliable to try to make decisions
+     about whether or not to output a particular entity until the end
+     of the compilation.  However, the inliner requires that functions
+     be provided to the back end if they are to be inlined.
+     Therefore, we always use unit-at-a-time mode; in that mode, we
+     can provide entities to the back end and it will decide what to
+     emit based on what is actually needed.  */
+  flag_unit_at_a_time = 1;
+
   if (c_common_init () == false)
     {
       pop_srcloc();
@@ -369,7 +380,7 @@ cxx_init (void)
 
   init_cp_pragma ();
 
-  init_repo (main_input_filename);
+  init_repo ();
 
   pop_srcloc();
   return true;