c-lex.c (yylex): Initialize traditional_type, ansi_type and type.

        * c-lex.c (yylex): Initialize traditional_type, ansi_type and type.
        * caller-save.c (insert_save_restore): Initialize pat, code and
        numregs.
        * emit-rtl.c (push_to_sequence): Initialize top.
        (push_topmost_sequence): Likewise.
        * genattrtab.c (simplify_by_exploding): Initialize defval.
        * profile.c (branch_prob): Initialize dest.
        * rtl.h (note_stores): Remove duplicate prototype.
        (GEN_INT): Re-instate cast of second arg to HOST_WIDE_INT.
Fix some warnings.
        * cplus-dem.c (gnu_special): Don't get confused by .<digits>
        strings that are not actually lengths.
A change from libiberty that didn't make it into the gcc copy.

From-SVN: r18942

gcc/ChangeLog

 Wed Apr  1 22:26:22 1998  Jeffrey A Law  (law@cygnus.com)
 
+	* c-lex.c (yylex): Initialize traditional_type, ansi_type and type.
+
+	* caller-save.c (insert_save_restore): Initialize pat, code and
+	numregs.
+
+	* emit-rtl.c (push_to_sequence): Initialize top.
+	(push_topmost_sequence): Likewise.
+
+	* genattrtab.c (simplify_by_exploding): Initialize defval.
+
+	* profile.c (branch_prob): Initialize dest.
+
+	* rtl.h (note_stores): Remove duplicate prototype.
+	(GEN_INT): Re-instate cast of second arg to HOST_WIDE_INT.
+
+	* cplus-dem.c (gnu_special): Don't get confused by .<digits>
+	strings that are not actually lengths.
+
 	* genattrtab.c: Make generated file use system.h, instead of
 	including stdio.h, etc directly.
 	* genextract.c, genopinit.c, genoutput.c: Likewise.

gcc/c-lex.c

@@ -1674,6 +1674,7 @@ yylex ()
 	    int spec_imag = 0;
 	    int bytes, warn, i;
 
+	    traditional_type = ansi_type = type = NULL_TREE;
 	    while (1)
 	      {
 		if (c == 'u' || c == 'U')

gcc/caller-save.c

@@ -640,9 +640,9 @@ insert_save_restore (insn, save_p, regno, insn_mode, maxrestore)
      enum machine_mode insn_mode;
      int maxrestore;
 {
-  rtx pat;
-  enum insn_code code;
-  int numregs;
+  rtx pat = NULL_RTX;
+  enum insn_code code = CODE_FOR_nothing;
+  int numregs = 0;
 
   /* A common failure mode if register status is not correct in the RTL
      is for this routine to be called with a REGNO we didn't expect to

gcc/cplus-dem.c

@@ -1901,6 +1901,15 @@ gnu_special (work, mangled, declp)
 	      if (isdigit(*mangled[0]))
 		{
 		  n = consume_count(mangled);
+		  /* We may be seeing a too-large size, or else a
+		     ".<digits>" indicating a static local symbol.  In
+		     any case, declare victory and move on; *don't* try
+		     to use n to allocate.  */
+		  if (n >= strlen (*mangled))
+		    {
+		      success = 1;
+		      break;
+		    }
 		}
 	      else
 		{

gcc/emit-rtl.c

@@ -3112,7 +3112,7 @@ push_to_sequence (first)
 void
 push_topmost_sequence ()
 {
-  struct sequence_stack *stack, *top;
+  struct sequence_stack *stack, *top = NULL;
 
   start_sequence ();
 
@@ -3130,7 +3130,7 @@ push_topmost_sequence ()
 void
 pop_topmost_sequence ()
 {
-  struct sequence_stack *stack, *top;
+  struct sequence_stack *stack, *top = NULL;
 
   for (stack = sequence_stack; stack; stack = stack->next)
     top = stack;

gcc/genattrtab.c

@@ -3561,7 +3561,7 @@ static rtx
 simplify_by_exploding (exp)
      rtx exp;
 {
-  rtx list = 0, link, condexp, defval;
+  rtx list = 0, link, condexp, defval = NULL_RTX;
   struct dimension *space;
   rtx *condtest, *condval;
   int i, j, total, ndim = 0;

gcc/profile.c

@@ -618,7 +618,7 @@ branch_prob (f, dump_file)
     register int i;
     int fall_through = 0;
     struct adj_list *arcptr;
-    int dest;
+    int dest = NULL_RTX;
 
     /* Block 0 always falls through to block 1.  */
     num_arcs = 0;

gcc/rtl.h

@@ -856,7 +856,6 @@ extern rtx single_set			PROTO((rtx));
 extern rtx find_last_value		PROTO((rtx, rtx *, rtx));
 extern int refers_to_regno_p		PROTO((int, int, rtx, rtx *));
 extern int reg_overlap_mentioned_p	PROTO((rtx, rtx));
-extern void note_stores			PROTO((rtx, void (*)()));
 extern rtx reg_set_last			PROTO((rtx, rtx));
 extern int rtx_equal_p			PROTO((rtx, rtx));
 extern int dead_or_set_p		PROTO((rtx, rtx));
@@ -951,7 +950,9 @@ extern rtx static_chain_incoming_rtx;
 extern rtx gen_rtx_CONST_INT PROTO((enum machine_mode, HOST_WIDE_INT));
 extern rtx gen_rtx_REG PROTO((enum machine_mode, int));
 
-#define GEN_INT(N)  gen_rtx_CONST_INT (VOIDmode, (N))
+/* We need the cast here to ensure that we get the same result both with
+   and without prototypes.  */
+#define GEN_INT(N)  gen_rtx_CONST_INT (VOIDmode, (HOST_WIDE_INT) (N))
 
 
 /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg