commit bb27d0d133cd61dc95e337e9d53e611557532338
from: Christian Weisgerber <naddy@mips.inka.de>
via: Thomas Adam <thomas@xteddy.org>
date: Fri Oct 15 19:22:03 2021 UTC

sync with OpenBSD parse.y

Explicitly cast "char" to "unsigned char" when assigned to "int"
to prevent sign extension from breaking comparions against EOF or
passing invalid arguments to ctype functions.

commit - d0772de93054323964834281205f7fd52818338d
commit + bb27d0d133cd61dc95e337e9d53e611557532338
blob - d07e4ee7857c9b384f7deffb440aca3e6aab746c
blob + 1d91c1f05c748a155769cbfd96cb8871ffd0c8cc
--- gotweb/parse.y
+++ gotweb/parse.y
@@ -380,7 +380,7 @@ top:
 		p = val + strlen(val) - 1;
 		lungetc(DONE_EXPAND);
 		while (p >= val) {
-			lungetc(*p);
+			lungetc((unsigned char)*p);
 			p--;
 		}
 		lungetc(START_EXPAND);
@@ -455,8 +455,8 @@ top:
 		} else {
 nodigits:
 			while (p > buf + 1)
-				lungetc(*--p);
-			c = *--p;
+				lungetc((unsigned char)*--p);
+			c = (unsigned char)*--p;
 			if (c == '-')
 				return (c);
 		}
blob - 65ef806773cce10c7696d828bfb623e663957131
blob + deabda5d8aec84464b9d75cbacf2ae77e665af58
--- libexec/got-read-gotconfig/parse.y
+++ libexec/got-read-gotconfig/parse.y
@@ -547,7 +547,7 @@ top:
 		p = val + strlen(val) - 1;
 		lungetc(DONE_EXPAND);
 		while (p >= val) {
-			lungetc(*p);
+			lungetc((unsigned char)*p);
 			p--;
 		}
 		lungetc(START_EXPAND);
@@ -625,8 +625,8 @@ top:
 		} else {
 nodigits:
 			while (p > buf + 1)
-				lungetc(*--p);
-			c = *--p;
+				lungetc((unsigned char)*--p);
+			c = (unsigned char)*--p;
 			if (c == '-')
 				return (c);
 		}