From: Aldy Hernandez <aldyh@redhat.com>
Date: Tue, 19 Jul 2016 19:29:42 +0000 (+0000)
Subject: re PR debug/71855 (duplicate unspecified_parameters DIE in DWARF for functions with... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f36a3ff7f79ee4c039716557cb6205c5a3ae1924;p=gcc.git

re PR debug/71855 (duplicate unspecified_parameters DIE in DWARF for functions with variable arguments)

	PR debug/71855
	* dwarf2out.c (gen_subprogram_die): Only call
	gen_unspecified_parameters_die while dumping early dwarf.

From-SVN: r238488
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a59b4b3f40e..35119514312 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2016-07-19  Aldy Hernandez  <aldyh@redhat.com>
+
+	PR debug/71855
+	* dwarf2out.c (gen_subprogram_die): Only call
+	gen_unspecified_parameters_die while dumping early dwarf.
+
 2016-07-19  Jakub Jelinek  <jakub@redhat.com>
 
 	PR middle-end/71874
diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
index 9da2b3bf4d4..e3cb586ce11 100644
--- a/gcc/dwarf2out.c
+++ b/gcc/dwarf2out.c
@@ -20726,14 +20726,17 @@ gen_subprogram_die (tree decl, dw_die_ref context_die)
 	 void_type_node 2) an unprototyped function declaration (not a
 	 definition).  This just means that we have no info about the
 	 parameters at all.  */
-      if (prototype_p (TREE_TYPE (decl)))
+      if (early_dwarf)
 	{
-	  /* This is the prototyped case, check for....  */
-	  if (stdarg_p (TREE_TYPE (decl)))
+	  if (prototype_p (TREE_TYPE (decl)))
+	    {
+	      /* This is the prototyped case, check for....  */
+	      if (stdarg_p (TREE_TYPE (decl)))
+		gen_unspecified_parameters_die (decl, subr_die);
+	    }
+	  else if (DECL_INITIAL (decl) == NULL_TREE)
 	    gen_unspecified_parameters_die (decl, subr_die);
 	}
-      else if (DECL_INITIAL (decl) == NULL_TREE)
-	gen_unspecified_parameters_die (decl, subr_die);
     }
 
   if (subr_die != old_die)
diff --git a/gcc/testsuite/gcc.dg/debug/dwarf2/pr71855.c b/gcc/testsuite/gcc.dg/debug/dwarf2/pr71855.c
new file mode 100644
index 00000000000..4fd8b74f329
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/debug/dwarf2/pr71855.c
@@ -0,0 +1,11 @@
+/* { dg-do compile } */
+/* { dg-options "-O0 -g -dA" } */
+
+// Test that there is only one DW_TAG_unspecified_parameters DIE.
+
+void
+foo (const char *format, ...)
+{
+}
+
+// { dg-final { scan-assembler-times "DIE.*DW_TAG_unspecified_parameters" 1 } }