1 files changed, 8 insertions, 7 deletions
diff --git a/yacc/symtab.c b/yacc/symtab.c
index 91e6bf100..4f52acf47 100644
--- a/yacc/symtab.c
+++ b/yacc/symtab.c
@@ -1,3 +1,4 @@
+#include <string.h>
 #include "defs.h"
 
 
@@ -8,7 +9,7 @@ bucket *last_symbol;
 
 int
 hash(name)
-char *name;
+        char *name;
 {
     register char *s;
     register int c, k;
@@ -16,7 +17,7 @@ char *name;
     assert(name && *name);
     s = name;
     k = *s;
-    while (c = *++s)
+    while ((c = *++s))
 	k = (31*k + c) & (TABLE_SIZE - 1);
 
     return (k);
@@ -25,7 +26,7 @@ char *name;
 
 bucket *
 make_bucket(name)
-char *name;
+        char *name;
 {
     register bucket *bp;
 
@@ -54,7 +55,7 @@ char *name;
 
 bucket *
 lookup(name)
-char *name;
+        char *name;
 {
     register bucket *bp, **bpp;
 
@@ -76,7 +77,7 @@ char *name;
 }
 
 
-create_symbol_table()
+void create_symbol_table()
 {
     register int i;
     register bucket *bp;
@@ -96,14 +97,14 @@ create_symbol_table()
 }
 
 
-free_symbol_table()
+void free_symbol_table()
 {
     FREE(symbol_table);
     symbol_table = 0;
 }
 
 
-free_symbols()
+void free_symbols()
 {
     register bucket *p, *q;