4 files changed, 35 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e95f409..72f4575 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2018-08-24  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR debug/79342
+	* dwarf2out.c (save_macinfo_strings): Call set_indirect_string
+	on DW_MACINFO_start_file for -gsplit-dwarf -g3.
+
 2018-08-24  Richard Biener  <rguenther@suse.de>
 
 	* cfg.h (struct control_flow_graph): Add edge_flags_allocated and
diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
index 91af4e8..77317ed 100644
--- a/gcc/dwarf2out.c
+++ b/gcc/dwarf2out.c
@@ -28287,6 +28287,12 @@ save_macinfo_strings (void)
                 && (debug_str_section->common.flags & SECTION_MERGE) != 0)
               set_indirect_string (find_AT_string (ref->info));
             break;
+	  case DW_MACINFO_start_file:
+	    /* -gsplit-dwarf -g3 will also output filename as indirect
+	       string.  */
+	    if (!dwarf_split_debug_info)
+	      break;
+	    /* Fall through. */
 	  case DW_MACRO_define_strp:
 	  case DW_MACRO_undef_strp:
             set_indirect_string (find_AT_string (ref->info));
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index e83279f..813676b 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2018-08-24  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR debug/79342
+	* gcc.dg/pr79342.: New test.
+
 2018-08-23  Martin Sebor  <msebor@redhat.com>
 
 	PR tree-optimization/87072
diff --git a/gcc/testsuite/gcc.dg/pr79342.c b/gcc/testsuite/gcc.dg/pr79342.c
new file mode 100644
index 0000000..958de55
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr79342.c
@@ -0,0 +1,18 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -gsplit-dwarf -g3" } */
+/* { dg-additional-options "-march=skylake -mrtm -mabm" { target x86_64-*-* i?86-*-* } } */
+
+int a;
+void b(void);
+
+void e(int *);
+int f(void);
+
+void 
+c(void)
+{
+  int d;
+  e(&d);
+  if (f())
+    b();
+}