commit 709f4c94471b5b910557420ab9bddb677c229100
from: Omar Polo <op@omarpolo.com>
date: Thu Feb 04 20:04:12 2021 UTC

alter the string, don't advance pointer

if we advance the pointer, we crash during reload due to an invalid
address given to free.  altering the string is the way.

commit - 102d2e9cce03e15fa001f4ee80862803c430b81a
commit + 709f4c94471b5b910557420ab9bddb677c229100
blob - 35742c81f4888e498a11b7c1bf5f59dd6796b4b3
blob + 4e1bc4b71aae42603160f9476f38c704719ff8f0
--- parse.y
+++ parse.y
@@ -115,10 +115,10 @@ servopt		: TCERT TSTRING		{ host->cert = ensure_absolu
 		| TKEY TSTRING		{ host->key  = ensure_absolute_path($2); }
 		| TROOT TSTRING		{ host->dir  = ensure_absolute_path($2); }
 		| TCGI TSTRING		{
-			host->cgi = $2;
 			/* drop the starting '/', if any */
-			if (*host->cgi == '/')
-				host->cgi++;
+			if (*$2 == '/')
+				memmove($2, $2+1, strlen($2));
+			host->cgi = $2;
 		}
 		| locopt
 		;