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Diffstat (limited to 'Build/source/texk/web2c/pdftexdir/tounicode.c')
-rw-r--r--Build/source/texk/web2c/pdftexdir/tounicode.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/Build/source/texk/web2c/pdftexdir/tounicode.c b/Build/source/texk/web2c/pdftexdir/tounicode.c
index 31121d864e1..a246366bf03 100644
--- a/Build/source/texk/web2c/pdftexdir/tounicode.c
+++ b/Build/source/texk/web2c/pdftexdir/tounicode.c
@@ -80,7 +80,7 @@ void deftounicode(strnumber glyph, strnumber unistr)
for (i = 0; i < l; i++) {
if (p[i] == ' ')
valid_unistr = 2; /* if a space occurs we treat this entry as a string */
- else if (!isXdigit(p[i])) {
+ else if (!isXdigit((unsigned char)p[i])) {
valid_unistr = 0;
break;
}
@@ -137,7 +137,7 @@ static long check_unicode_value(const char *s, boolean multiple_value)
return UNI_UNDEF;
for (i = 0; i < l; i++) {
- if (!isXdigit(s[i]))
+ if (!isXdigit((unsigned char)s[i]))
return UNI_UNDEF;
if (multiple_value) {
if (i % 4 == 3) {