From 525585206b7fcbf78361a5ce49c60e2963e7c6f4 Mon Sep 17 00:00:00 2001
From: Matthew Fernandez <matthew.fernandez@gmail.com>
Date: Sun, 24 Jul 2022 09:55:56 -0700
Subject: [PATCH] ast fmtbuf: squash -Wsign-compare warning

This is computing the number of bytes remaining in `buf`; the number of bytes
between a pointer to the current offset and the end of `buf`. Thus it is always
non-negative.
---
 lib/ast/fmtbuf.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/ast/fmtbuf.c b/lib/ast/fmtbuf.c
index 09a58cfe5..ffe99d0b7 100644
--- a/lib/ast/fmtbuf.c
+++ b/lib/ast/fmtbuf.c
@@ -10,6 +10,7 @@
 
 
 #include <ast/ast.h>
+#include <stddef.h>
 
 /*
  * return small format buffer chunk of size n
@@ -23,7 +24,7 @@ char *fmtbuf(size_t n)
 {
     char *cur;
 
-    if (n > (&buf[elementsof(buf)] - nxt))
+    if (n > (size_t)(&buf[elementsof(buf)] - nxt))
 	nxt = buf;
     cur = nxt;
     nxt += n;
-- 
2.40.0