From: Jakub Jelinek <jakub@redhat.com>
Date: Mon, 26 Nov 2018 21:24:00 +0000 (+0100)
Subject: re PR c++/86900 (-gdwarf-5 -O2 -ffunction-sections = assembler error)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=14fac4364c49414c386efe334533740555bfdf41;p=gcc.git

re PR c++/86900 (-gdwarf-5 -O2 -ffunction-sections = assembler error)

	PR c++/86900
	* dwarf2out.c (secname_for_decl): For functions with
	DECL_SECTION_NAME if in_cold_section_p, try to return
	current_function_section's name if it is a named section.

	* g++.dg/debug/dwarf2/pr86900.C: New test.

From-SVN: r266485
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a4d60791c28..42f2ff059e3 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2018-11-26  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/86900
+	* dwarf2out.c (secname_for_decl): For functions with
+	DECL_SECTION_NAME if in_cold_section_p, try to return
+	current_function_section's name if it is a named section.
+
 2018-11-26  Maya Rashish  <coypu@sdf.org>
 
 	PR target/58397
diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
index 9933650e33b..8b64c8769cd 100644
--- a/gcc/dwarf2out.c
+++ b/gcc/dwarf2out.c
@@ -16742,7 +16742,15 @@ secname_for_decl (const_tree decl)
       && DECL_SECTION_NAME (decl))
     secname = DECL_SECTION_NAME (decl);
   else if (current_function_decl && DECL_SECTION_NAME (current_function_decl))
-    secname = DECL_SECTION_NAME (current_function_decl);
+    {
+      if (in_cold_section_p)
+	{
+	  section *sec = current_function_section ();
+	  if (sec->common.flags & SECTION_NAMED)
+	    return sec->named.name;
+	}
+      secname = DECL_SECTION_NAME (current_function_decl);
+    }
   else if (cfun && in_cold_section_p)
     secname = crtl->subsections.cold_section_label;
   else
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index ef9ad1db551..7d65607b138 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2018-11-26  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/86900
+	* g++.dg/debug/dwarf2/pr86900.C: New test.
+
 2018-11-26  Jozef Lawrynowicz  <jozef.l@mittosystems.com>
 
 	* gcc.c-torture/compile/20151204.c: Add dg-require-effective-target
diff --git a/gcc/testsuite/g++.dg/debug/dwarf2/pr86900.C b/gcc/testsuite/g++.dg/debug/dwarf2/pr86900.C
new file mode 100644
index 00000000000..6250f0644d6
--- /dev/null
+++ b/gcc/testsuite/g++.dg/debug/dwarf2/pr86900.C
@@ -0,0 +1,14 @@
+// PR c++/86900
+// { dg-do assemble { target function_sections } }
+// { dg-options "-O2 -gdwarf-5 -ffunction-sections" }
+
+struct A;
+struct B { B (A); };
+struct A { A (int); ~A (); };
+
+void
+foo (int x)
+{
+  A d(0);
+  B e(d);
+}