From 85c904857339abef41d2293ac99280a501626750 Mon Sep 17 00:00:00 2001
From: Adrian Chadd <adrian@FreeBSD.org>
Date: Tue, 14 Jul 2020 05:00:08 +0000
Subject: [PATCH] [flex] Fix compilation issue under mips-gcc-6.4

This was triggering a pointer-losing-constness error.
---
 contrib/flex/src/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/contrib/flex/src/main.c b/contrib/flex/src/main.c
index 711e387b1b51..8c57854feb91 100644
--- a/contrib/flex/src/main.c
+++ b/contrib/flex/src/main.c
@@ -342,7 +342,7 @@ void check_options (void)
     /* Setup the filter chain. */
     output_chain = filter_create_int(NULL, filter_tee_header, headerfilename);
     if ( !(m4 = getenv("M4"))) {
-	    char *slash;
+		const char *slash;
 		m4 = M4;
 		if ((slash = strrchr(M4, '/')) != NULL) {
 			m4 = slash+1;