2012-03-06 Tristan Gingold <gingold@adacore.com>

* corefile.c (core_create_function_syms): Do not call bsearch if
	symbol_map_count is 0.

gprof/ChangeLog

@@ -1,3 +1,8 @@
+2012-03-06  Tristan Gingold  <gingold@adacore.com>
+
+	* corefile.c (core_create_function_syms): Do not call bsearch if
+	symbol_map_count is 0.
+
 2012-02-06  Nick Clifton  <nickc@redhat.com>
 
 	* po/sr.po: New Serbian translation.

gprof/corefile.c

@@ -582,7 +582,7 @@ core_create_function_syms (void)
   bfd_vma max_vma = 0;
   int cxxclass;
   long i;
-  struct function_map * found;
+  struct function_map * found = NULL;
   int core_has_func_syms = 0;
 
   switch (core_bfd->xvec->flavour)
@@ -609,10 +609,14 @@ core_create_function_syms (void)
       /* Don't create a symtab entry for a function that has
 	 a mapping to a file, unless it's the first function
 	 in the file.  */
-      found = (struct function_map *) bsearch (core_syms[i]->name, symbol_map,
-                                               symbol_map_count,
-                                               sizeof (struct function_map),
-                                               search_mapped_symbol);
+      if (symbol_map_count != 0)
+	{
+	  /* Note: some systems (SunOS 5.8) crash if bsearch base argument
+	     is NULL.  */
+	  found = (struct function_map *) bsearch
+	    (core_syms[i]->name, symbol_map, symbol_map_count,
+	     sizeof (struct function_map), search_mapped_symbol);
+	}
       if (found == NULL || found->is_first)
 	++symtab.len;
     }
@@ -643,9 +647,14 @@ core_create_function_syms (void)
 	  continue;
 	}
 
-      found = (struct function_map *) bsearch (core_syms[i]->name, symbol_map,
-                                               symbol_map_count,
-		       sizeof (struct function_map), search_mapped_symbol);
+      if (symbol_map_count != 0)
+	{
+	  /* Note: some systems (SunOS 5.8) crash if bsearch base argument
+	     is NULL.  */
+	  found = (struct function_map *) bsearch
+	    (core_syms[i]->name, symbol_map, symbol_map_count,
+	     sizeof (struct function_map), search_mapped_symbol);
+	}
       if (found && ! found->is_first)
 	continue;