From 88b34a4811a0a5237138bbd6700202c2f3569c7d Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Wed, 27 Nov 2019 01:23:39 +0100
Subject: [PATCH] re PR debug/92664 (Wrong .debug_line section information when
 compiling stdin input with -g3)

	PR debug/92664
	* dwarf2out.c (lookup_filename): Use "<stdin>" instead of "".

From-SVN: r278752
---
 gcc/ChangeLog   | 5 +++++
 gcc/dwarf2out.c | 3 +++
 2 files changed, 8 insertions(+)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 205c489..ecade7b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2019-11-27  Jakub Jelinek  <jakub@redhat.com>
+
+	PR debug/92664
+	* dwarf2out.c (lookup_filename): Use "<stdin>" instead of "".
+
 2019-11-26  Martin Sebor  <msebor@redhat.com>
 
 	PR tree-optimization/92683
diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
index 9f1d921..6fb345b 100644
--- a/gcc/dwarf2out.c
+++ b/gcc/dwarf2out.c
@@ -27118,6 +27118,9 @@ lookup_filename (const char *file_name)
   if (!file_name)
     return NULL;
 
+  if (!file_name[0])
+    file_name = "<stdin>";
+
   dwarf_file_data **slot
     = file_table->find_slot_with_hash (file_name, htab_hash_string (file_name),
 				       INSERT);
-- 
2.7.4