Static checking by Sun C 5.12.

* lib-src/etags.c (analyse_regex): Omit unreachable code.
* src/alloc.c (buffer_memory_full) [REL_ALLOC]:
* src/bytecode.c (exec_byte_code):
* src/dispnew.c (init_display):
* src/eval.c (error):
* src/fileio.c (Fsubstitute_in_file_name):
* src/keyboard.c (Fevent_convert_list):
* src/keymap.c (Fsingle_key_description):
* src/term.c (maybe_fatal, fatal):
* src/xfns.c (Fx_display_backing_store, Fx_display_visual_class):
* src/xsmfns.c (Fhandle_save_session):
Omit unreachable code.
* src/keymap.c (map_keymap_char_table_item): Cast void * to
a function pointer type; the C Standard requires this.

11 files changed, 23 insertions, 25 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index c0e6bd93fd0..7642393bb01 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,5 +1,20 @@
 2013-03-13  Paul Eggert  <eggert@cs.ucla.edu>
 
+        Static checking by Sun C 5.12.
+        * alloc.c (buffer_memory_full) [REL_ALLOC]:
+        * bytecode.c (exec_byte_code):
+        * dispnew.c (init_display):
+        * eval.c (error):
+        * fileio.c (Fsubstitute_in_file_name):
+        * keyboard.c (Fevent_convert_list):
+        * keymap.c (Fsingle_key_description):
+        * term.c (maybe_fatal, fatal):
+        * xfns.c (Fx_display_backing_store, Fx_display_visual_class):
+        * xsmfns.c (Fhandle_save_session):
+        Omit unreachable code.
+        * keymap.c (map_keymap_char_table_item): Cast void * to
+        a function pointer type; the C Standard requires this.
+
         * sysdep.c: Remove a use of BSD_SYSTEM, which I'm trying to phase out.
         Include <sys/param.h> unconditionally, as that works elsewhere and
         is simpler here.  Include <sys/sysctl.h> if DARWIN_OS ||
diff --git a/src/alloc.c b/src/alloc.c
index 80086433e65..b2703c5f961 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -422,11 +422,11 @@ buffer_memory_full (ptrdiff_t nbytes)
 
 #ifndef REL_ALLOC
   memory_full (nbytes);
-#endif
-
+#else
   /* This used to call error, but if we've run out of memory, we could
      get infinite recursion trying to build the string.  */
   xsignal (Qnil, Vmemory_signal_data);
+#endif
 }
 
 /* A common multiple of the positive integers A and B.  Ideally this
diff --git a/src/bytecode.c b/src/bytecode.c
index 628c4d90cf3..acb96c1e61b 100644
--- a/src/bytecode.c
+++ b/src/bytecode.c
@@ -755,7 +755,6 @@ exec_byte_code (Lisp_Object bytestr, Lisp_Object vector, Lisp_Object maxdepth,
               {
                 BEFORE_POTENTIAL_GC ();
                 wrong_type_argument (Qlistp, v1);
-                AFTER_POTENTIAL_GC ();
               }
             NEXT;
           }
@@ -790,7 +789,6 @@ exec_byte_code (Lisp_Object bytestr, Lisp_Object vector, Lisp_Object maxdepth,
               {
                 BEFORE_POTENTIAL_GC ();
                 wrong_type_argument (Qlistp, v1);
-                AFTER_POTENTIAL_GC ();
               }
             NEXT;
           }
diff --git a/src/dispnew.c b/src/dispnew.c
index 9335365bc71..47adab6b8f7 100644
--- a/src/dispnew.c
+++ b/src/dispnew.c
@@ -6100,10 +6100,7 @@ init_display (void)
 
   /* If no window system has been specified, try to use the terminal.  */
   if (! isatty (0))
-    {
-      fatal ("standard input is not a tty");
-      exit (1);
-    }
+    fatal ("standard input is not a tty");
 
 #ifdef WINDOWSNT
   terminal_type = "w32console";
diff --git a/src/eval.c b/src/eval.c
index 5db6f9d0bf3..69483a9b205 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -1690,7 +1690,6 @@ error (const char *m, ...)
   va_list ap;
   va_start (ap, m);
   verror (m, ap);
-  va_end (ap);
 }
 
 DEFUN ("commandp", Fcommandp, Scommandp, 1, 2, 0,
diff --git a/src/fileio.c b/src/fileio.c
index d7363077b35..8937f7ca477 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -1850,9 +1850,6 @@ those `/' is discarded.  */)
   error ("Missing \"}\" in environment-variable substitution");
  badvar:
   error ("Substituting nonexistent environment variable \"%s\"", target);
-
-  /* NOTREACHED */
-  return Qnil;
 }
 
 /* A slightly faster and more convenient way to get
@@ -3305,7 +3302,6 @@ Use the current time if TIMESTAMP is nil.  TIMESTAMP is in the format of
           return Qnil;
 #endif
         report_file_error ("Setting file times", Fcons (absname, Qnil));
-        return Qnil;
       }
   }
 
diff --git a/src/keyboard.c b/src/keyboard.c
index fe8b45a0130..e43b7a73172 100644
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -6552,10 +6552,7 @@ has the same base event type and all the specified modifiers.  */)
   else if (SYMBOLP (base))
     return apply_modifiers (modifiers, base);
   else
-    {
-      error ("Invalid base event");
-      return Qnil;
-    }
+    error ("Invalid base event");
 }
 
 /* Try to recognize SYMBOL as a modifier name.
diff --git a/src/keymap.c b/src/keymap.c
index 922c1703edf..00eefb375ef 100644
--- a/src/keymap.c
+++ b/src/keymap.c
@@ -565,7 +565,8 @@ map_keymap_char_table_item (Lisp_Object args, Lisp_Object key, Lisp_Object val)
 {
   if (!NILP (val))
     {
-      map_keymap_function_t fun = XSAVE_POINTER (args, 0);
+      map_keymap_function_t fun
+        = (map_keymap_function_t) XSAVE_POINTER (args, 0);
       /* If the key is a range, make a copy since map_char_table modifies
          it in place.  */
       if (CONSP (key))
@@ -2310,7 +2311,6 @@ around function keys and event symbols.  */)
     return Fcopy_sequence (key);
   else
     error ("KEY must be an integer, cons, symbol, or string");
-  return Qnil;
 }
 
 static char *
diff --git a/src/term.c b/src/term.c
index 822b74aa44e..38706602a02 100644
--- a/src/term.c
+++ b/src/term.c
@@ -3426,9 +3426,6 @@ maybe_fatal (int must_succeed, struct terminal *terminal,
     vfatal (str2, ap);
   else
     verror (str1, ap);
-
-  va_end (ap);
-  emacs_abort ();
 }
 
 void
@@ -3437,7 +3434,6 @@ fatal (const char *str, ...)
   va_list ap;
   va_start (ap, str);
   vfatal (str, ap);
-  va_end (ap);
 }
 
 
diff --git a/src/xfns.c b/src/xfns.c
index a6a56c8c5e1..100fd81a155 100644
--- a/src/xfns.c
+++ b/src/xfns.c
@@ -3769,7 +3769,6 @@ If omitted or nil, that stands for the selected frame's display.  */)
 
     default:
       error ("Strange value for BackingStore parameter of screen");
-      result = Qnil;
     }
 
   return result;
@@ -3811,7 +3810,6 @@ If omitted or nil, that stands for the selected frame's display.  */)
       break;
     default:
       error ("Display has an unknown visual class");
-      result = Qnil;
     }
 
   return result;
diff --git a/src/xsmfns.c b/src/xsmfns.c
index fe2dfbaf83e..cb7122202df 100644
--- a/src/xsmfns.c
+++ b/src/xsmfns.c
@@ -514,9 +514,11 @@ Do not call this function yourself. */)
          prevent.  Fix this in next version.  */
       Fkill_emacs (Qnil);
 
+#if 0
       /* This will not be reached, but we want kill-emacs-hook to be run.  */
       SmcCloseConnection (smc_conn, 0, 0);
       ice_connection_closed ();
+#endif
     }
 
   return Qnil;