* genextract.c (main): Clear recog_operands before extracting.

From-SVN: r25473

gcc/ChangeLog

@@ -3,6 +3,8 @@ Fri Feb 26 15:33:45 1999  Richard Henderson  <rth@cygnus.com>
 	* genattrtab.c (simplify_knowing): Fix uninitialized read
 	in Feb 21 change.
 
+	* genextract.c (main): Clear recog_operands before extracting.
+
 Fri Feb 26 02:24:57 1999  Jeffrey A Law  (law@cygnus.com)
 
 	* c-pragma.c (add_weak); Delete.  Moved into...

gcc/genextract.c

@@ -461,6 +461,8 @@ from the machine description file `md'.  */\n\n");
   printf ("  register rtx **ro_loc = recog_operand_loc;\n");
   printf ("  rtx pat = PATTERN (insn);\n");
   printf ("  int i ATTRIBUTE_UNUSED;\n\n");
+  printf ("  memset (ro, 0, sizeof (*ro) * MAX_RECOG_OPERANDS);\n");
+  printf ("  memset (ro_loc, 0, sizeof (*ro_loc) * MAX_RECOG_OPERANDS);\n");
   printf ("  switch (INSN_CODE (insn))\n");
   printf ("    {\n");
   printf ("    case -1:\n");