Fix unused-function warnings in lex output

[mmh] / sbr / dtimep.lex

diff --git a/sbr/dtimep.lex b/sbr/dtimep.lex
index a228694..0191086 100644 (file)
--- a/sbr/dtimep.lex
+++ b/sbr/dtimep.lex
@@ -1,3 +1,12 @@
+/* dtimep.lex exceeds the default table capacities for some old versions
+ * of lex (and the minimum defaults as specified by POSIX).  The following
+ * choices meet or exceed the lex defaults for older SunOS4.x, Solaris,
+ * HPUX, and AIX.
+ */
+%e4000
+%p7000
+%n2500
+%a5000
 %{
 #include <h/nmh.h>
 #include <h/tws.h>
@@ -8,7 +17,7 @@
 #define yywrap() 1
 #define YY_SKIP_YYWRAP
 
-#define YY_NO_UNPUT
+#define YY_NO_INPUT
 
   /* This is the tricky thing that makes this function cool.  We
    *  replace the traditional int yylex(void) declaration with our
@@ -227,7 +236,7 @@ nl      [ \t\n()]
   
   YY_BUFFER_STATE lexhandle;
 
-  register char *cp;
+  register unsigned char *cp;
   static struct tws tw; 
 
   memset(&tw,0,sizeof(struct tws));
@@ -389,3 +398,16 @@ nl      [ \t\n()]
 {nl}("hdt"|"HDT")                  { INIT(); SETDST(); SETZONE(-1000);
                                       yyterminate(); }
 .|\n
+
+%%
+/* This is a portable way to squash a warning about the yyunput()
+ * function being static but never used. It costs us a tiny amount
+ * of extra code in the binary but the other options are:
+ *  "%option nounput" which is flex-specific
+ *  makefile hackery just to compile dtimep.c with different flags
+ */
+void dtimep_yyunput(int c)
+{
+    unput(c);
+}
+