From e25960c5484392a6fd208ad3f63a483f5bbb695b Mon Sep 17 00:00:00 2001
From: Saagar Jha <saagar@saagarjha.com>
Date: Sun, 7 May 2023 04:19:37 -0700
Subject: [PATCH] Fix pointer-to-int cast

Resolves "warning: performing pointer subtraction with a null pointer
has undefined behavior [-Wnull-pointer-subtraction]"
---
 httpd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/httpd.c b/httpd.c
index 8350b53..7a25b84 100644
--- a/httpd.c
+++ b/httpd.c
@@ -366,7 +366,7 @@ void job_wait(xs_val **job)
 static void *job_thread(void *arg)
 /* job thread */
 {
-    int pid = (char *) arg - (char *) 0x0;
+    int pid = (int)(uintptr_t)arg;
 
     srv_debug(1, xs_fmt("job thread %d started", pid));