From 9096df74fc89614125c00c2eb358c350eea96cdb Mon Sep 17 00:00:00 2001
From: m-holger <m-holger@kubitscheck.org>
Date: Mon, 30 Jan 2023 14:11:25 +0000
Subject: Replace strchr in QUtil::is_hex_digit and is_space

---
 include/qpdf/QUtil.hh | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/qpdf/QUtil.hh b/include/qpdf/QUtil.hh
index 27521a70..dd452026 100644
--- a/include/qpdf/QUtil.hh
+++ b/include/qpdf/QUtil.hh
@@ -545,13 +545,15 @@ namespace QUtil
 inline bool
 QUtil::is_hex_digit(char ch)
 {
-    return (ch && (strchr("0123456789abcdefABCDEF", ch) != nullptr));
+    return ('0' <= ch && ch <= '9') || ('a' <= ch && ch <= 'f') ||
+        ('A' <= ch && ch <= 'F');
 }
 
 inline bool
 QUtil::is_space(char ch)
 {
-    return (ch && (strchr(" \f\n\r\t\v", ch) != nullptr));
+    return ch == ' ' || ch == '\n' || ch == '\r' || ch == '\t' || ch == '\f' ||
+        ch == '\v';
 }
 
 inline bool
-- 
cgit v1.2.3-54-g00ecf