Add "%option warn" to all flex input files that lacked it.

This is recommended in the flex manual, and there seems no good reason
not to use it everywhere.

1 files changed, 3 insertions, 2 deletions

diff --git a/src/test/isolation/specscanner.l b/src/test/isolation/specscanner.l
index 36e10e76785..77d863e3e67 100644
--- a/src/test/isolation/specscanner.l
+++ b/src/test/isolation/specscanner.l
@@ -15,7 +15,7 @@ static int	yyline = 1;			/* line number for error reporting */
 static char litbuf[1024];
 static int litbufpos = 0;
 
-static void addlitchar(const char c);
+static void addlitchar(char c);
 
 %}
 
@@ -25,6 +25,7 @@ static void addlitchar(const char c);
 %option noinput
 %option nounput
 %option noyywrap
+%option warn
 %option prefix="spec_yy"
 
 
@@ -93,7 +94,7 @@ teardown		{ return(TEARDOWN); }
 %%
 
 static void
-addlitchar(const char c)
+addlitchar(char c)
 {
   if (litbufpos >= sizeof(litbuf) - 1)
   {