[binutils-gdb] Fix recent compiler warnings.

[Jan Kratochvil]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=7814882a6534c100d8eba1a41588611a8b38c429

commit 7814882a6534c100d8eba1a41588611a8b38c429
Author: Jan Kratochvil <jan.kratochvil@redhat.com>
Date:   Tue Feb 21 09:14:37 2017 +0100

    Fix recent compiler warnings.
    
    gcc-4.8.5-11.el7.x86_64
    
    dwarf2read.c: In function ‘pc_bounds_kind dwarf2_get_pc_bounds(die_info*, CORE_ADDR*, CORE_ADDR*, dwarf2_cu*, partial_symtab*)’:
    dwarf2read.c:12134:7: error: ‘range_end’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
    dwarf2read.c:12133:7: error: ‘range_beginning’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
    
    gdb/ChangeLog
    2017-02-21  Jan Kratochvil  <jan.kratochvil@redhat.com>
    
    	* dwarf2_rnglists_process: Initialize range_beginning and range_end.

Diff:
---
 gdb/ChangeLog    | 4 ++++
 gdb/dwarf2read.c | 3 ++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 051e257..2a703ae 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2017-02-21  Jan Kratochvil  <jan.kratochvil@redhat.com>
+
+	* dwarf2_rnglists_process: Initialize range_beginning and range_end.
+
 2017-02-20  Jan Kratochvil  <jan.kratochvil@redhat.com>
 
 	* NEWS (Changes since GDB 7.12): Add DWARF-5.
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index ae7d3f2..8a6e1f3 100644
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -12030,7 +12030,8 @@ dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu,
 
   while (1)
     {
-      CORE_ADDR range_beginning, range_end;
+      /* Initialize it due to a false compiler warning.  */
+      CORE_ADDR range_beginning = 0, range_end = 0;
       const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer
 				 + dwarf2_per_objfile->rnglists.size);
       unsigned int bytes_read;