Backport a fix for clang && -gsplit-dwarf debuggees (RH BZ 1482892).

gdb-upstream.patch

@@ -469,3 +469,82 @@ Date:   Tue Jul 25 11:38:50 2017 +0100
  # End of tests.
  
  return 0
+
+
+
+commit 16eb6b2db49e6cf2fdca56efd37689fcc170cd37
+Author: Leszek Swirski <leszeks@google.com>
+Date:   Mon Aug 7 16:40:38 2017 +0200
+
+    Fix dwarf2_string_attr for -gsplit-dwarf
+    
+    The dwarf2_string_attr did not allow DW_FORM_GNU_str_index as a form for
+    string types. This manifested as null strings in the namespace_name
+    lookup (replaced with "(anonymous namespace)") when debugging
+    Fission-compiled code.
+    
+    gdb/ChangeLog:
+    
+            * dwarf2read.c (dwarf2_string_attr): Allow DW_FORM_GNU_strp_alt.
+
+### a/gdb/ChangeLog
+### b/gdb/ChangeLog
+## -1,3 +1,7 @@
++2017-08-07  Leszek Swirski  <leszeks@google.com>
++
++	* dwarf2read.c (dwarf2_string_attr): Allow DW_FORM_GNU_strp_alt.
++
+ 2017-08-07  Simon Marchi  <simon.marchi@ericsson.com>
+ 
+ 	* remote-sim.c (gdbsim_load): Remove char **argv local variable.
+--- a/gdb/dwarf2read.c
++++ b/gdb/dwarf2read.c
+@@ -17623,7 +17623,8 @@ dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *c
+   if (attr != NULL)
+     {
+       if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp
+-	  || attr->form == DW_FORM_string || attr->form == DW_FORM_GNU_strp_alt)
++	  || attr->form == DW_FORM_string || DW_FORM_GNU_str_index
++	  || attr->form == DW_FORM_GNU_strp_alt)
+ 	str = DW_STRING (attr);
+       else
+         complaint (&symfile_complaints,
+
+
+
+commit b33404388e5bbd8a1fddfde73cd4593ae2b557e8
+Author: H.J. Lu <hjl.tools@gmail.com>
+Date:   Wed Aug 9 05:01:55 2017 -0700
+
+    gdb: Fix build failure with GCC 7
+    
+    Fix:
+    
+    /export/gnu/import/git/sources/binutils-gdb/gdb/dwarf2read.c: In function ‘const char* dwarf2_string_attr(die_info*, unsigned int, dwarf2_cu*)’:
+    /export/gnu/import/git/sources/binutils-gdb/gdb/dwarf2read.c:17626:39: error: enum constant in boolean context [-Werror=int-in-bool-context]
+        || attr->form == DW_FORM_string || DW_FORM_GNU_str_index
+    
+            * dwarf2read.c (dwarf2_string_attr): Fix a typo.
+
+### a/gdb/ChangeLog
+### b/gdb/ChangeLog
+## -1,3 +1,7 @@
++2017-08-09  H.J. Lu  <hongjiu.lu@intel.com>
++
++	* dwarf2read.c (dwarf2_string_attr): Fix a typo.
++
+ 2017-08-09  Alex Lindsay  <alexlindsay239@gmail.com>
+ 	    Yao Qi  <yao.qi@linaro.org>
+ 
+--- a/gdb/dwarf2read.c
++++ b/gdb/dwarf2read.c
+@@ -17623,7 +17623,8 @@ dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *c
+   if (attr != NULL)
+     {
+       if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp
+-	  || attr->form == DW_FORM_string || DW_FORM_GNU_str_index
++	  || attr->form == DW_FORM_string
++	  || attr->form == DW_FORM_GNU_str_index
+ 	  || attr->form == DW_FORM_GNU_strp_alt)
+ 	str = DW_STRING (attr);
+       else

gdb.spec

@@ -26,7 +26,7 @@ Version: 8.0
 
 # The release always contains a leading reserved number, start it at 1.
 # `upstream' is not a part of `name' to stay fully rpm dependencies compatible for the testing.
-Release: 21%{?dist}
+Release: 22%{?dist}
 
 License: GPLv3+ and GPLv3+ with exceptions and GPLv2+ and GPLv2+ with exceptions and GPL+ and LGPLv2+ and LGPLv3+ and BSD and Public Domain and GFDL
 Group: Development/Debuggers
@@ -1643,6 +1643,9 @@ then
 fi
 
 %changelog
+* Fri Aug 18 2017 Jan Kratochvil <jan.kratochvil@redhat.com> - 8.0-22.fc26
+- Backport a fix for clang && -gsplit-dwarf debuggees (RH BZ 1482892).
+
 * Sun Aug 13 2017 Jan Kratochvil <jan.kratochvil@redhat.com> - 8.0-21.fc26
 - Fix compatibility with F-27 debuginfo packaging.
 - Fix compatibility with F-27 librpm version 8.