* stabsread.c (patch_block_stabs): Add comment about what happens

	if the definition is in another compilation unit from the stab.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 6d5a99a..b757255 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,7 +1,7 @@
 Thu Mar 24 07:12:09 1994  Jim Kingdon  (kingdon@lioth.cygnus.com)
 
-       * stabsread.c (patch_block_stabs): Don't create LOC_OPTIMIZED_OUT
-       symbols.  Reverts change of 2 Apr 1993.
+       * stabsread.c (patch_block_stabs): Add comment about what happens
+       if the definition is in another compilation unit from the stab.
 
        * dbxread.c (end_psymtab): Add comment about empty psymtabs.
 

diff --git a/gdb/stabsread.c b/gdb/stabsread.c
index 6466e37..af486ff 100644 (file)
--- a/gdb/stabsread.c
+++ b/gdb/stabsread.c
@@ -399,13 +399,13 @@ patch_block_stabs (symbols, stabs, objfile)
          sym = find_symbol_in_list (symbols, name, pp-name);
          if (!sym)
            {
-#if 0
-             /* The following code is disabled because AIX's xlc also
-                puts out a stab but no C_EXT in the case where a
-                symbol is referenced but not defined (in that
-                compilation unit).  So we just don't create a symbol,
-                and the user will get the symbol from the compilation
-                unit in which the symbol is actually defined.  */
+             /* FIXME-maybe: it would be nice if we noticed whether
+                the variable was defined *anywhere*, not just whether
+                it is defined in this compilation unit.  But neither
+                xlc or GCC seem to need such a definition, and until
+                we do psymtabs (so that the minimal symbols from all
+                compilation units are available now), I'm not sure
+                how to get the information.  */
 
              /* On xcoff, if a global is defined and never referenced,
                 ld will remove it from the executable.  There is then
@@ -433,7 +433,6 @@ patch_block_stabs (symbols, stabs, objfile)
                  SYMBOL_TYPE (sym) = read_type (&pp, objfile);
                }
              add_symbol_to_list (sym, &global_symbols);
-#endif /* 0 */
            }
          else
            {