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[PUSHED/OBVIOUS] Fix 'obj' may be used uninitialized warning in symtab.c:matching_obj_sections.


Fix warning:

gdb/symtab.c: In function ‘int matching_obj_sections(obj_section*, obj_section*)’:
gdb/symtab.c:1024:12: warning: ‘obj’ may be used uninitialized in this function [-Wmaybe-uninitialized]
   if (obj->separate_debug_objfile_backlink != NULL

2019-01-12  Philippe Waroquiers  <philippe.waroquiers@skynet.be>

	* symtab.c (matching_obj_sections): Initialize obj,
	declare it closer to its usage.
---
 gdb/ChangeLog | 5 +++++
 gdb/symtab.c  | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 7fd2051cb0..e0b47b4bb0 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2019-01-12  Philippe Waroquiers  <philippe.waroquiers@skynet.be>
+
+	* symtab.c (matching_obj_sections): Initialize obj,
+	declare it closer to its usage.
+
 2019-01-10  Tom Tromey  <tom@tromey.com>
 
 	* thread-iter.h (inf_threads_iterator): Use next_iterator.
diff --git a/gdb/symtab.c b/gdb/symtab.c
index d5e18a64d0..29b24328fb 100644
--- a/gdb/symtab.c
+++ b/gdb/symtab.c
@@ -970,7 +970,6 @@ matching_obj_sections (struct obj_section *obj_first,
 {
   asection *first = obj_first? obj_first->the_bfd_section : NULL;
   asection *second = obj_second? obj_second->the_bfd_section : NULL;
-  struct objfile *obj;
 
   /* If they're the same section, then they match.  */
   if (first == second)
@@ -1010,6 +1009,7 @@ matching_obj_sections (struct obj_section *obj_first,
 
   /* Otherwise check that they are in corresponding objfiles.  */
 
+  struct objfile *obj = NULL;
   for (objfile *objfile : all_objfiles (current_program_space))
     if (objfile->obfd == first->owner)
       {
-- 
2.20.1


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