From FEDORA_PATCHES Mon Sep 17 00:00:00 2001

From: Fedora GDB patches <invalid@email.com>

Date: Fri, 27 Oct 2017 21:07:50 +0200

Subject: gdb-gnat-dwarf-crash-3of3.patch

;; Fix crash of -readnow /usr/lib/debug/usr/bin/gnatbind.debug (BZ 1069211).

;;=push+jan

http://sourceware.org/ml/gdb-patches/2014-02/msg00731.html

--6TrnltStXW4iwmi0

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Hi,

PR 16581:

	GDB crash on inherit_abstract_dies infinite recursion

	https://sourceware.org/bugzilla/show_bug.cgi?id=16581

fixed crash from an infinite recursion.  But in rare cases the new code can

now gdb_assert() due to weird DWARF file.

I do not yet fully understand why the DWARF is as it is but just GDB should

never crash due to invalid DWARF anyway.  The "invalid" DWARF I see only in

Fedora GCC build, not in FSF GCC build, more info at:

	https://bugzilla.redhat.com/show_bug.cgi?id=1069382

	http://people.redhat.com/jkratoch/gcc-debuginfo-4.8.2-7.fc20.x86_64-gnatbind.debug

Thanks,

Jan

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gdb/

2014-02-24  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* dwarf2read.c (process_die): Change gdb_assert to complaint.

diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c

--- a/gdb/dwarf2read.c

+++ b/gdb/dwarf2read.c

@@ -10613,6 +10613,14 @@ private:

 static void

 process_die (struct die_info *die, struct dwarf2_cu *cu)

 {

+  if (die->in_process)

+    {

+      complaint (&symfile_complaints,

+		 _("DIE at 0x%x attempted to be processed twice"),

+		 to_underlying (die->sect_off));

+      return;

+    }

+

   process_die_scope scope (die, cu);

   switch (die->tag)