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Diffstat (limited to 'Build/source/texk/psutils/psutils-1.23/pstops.c')
-rw-r--r--Build/source/texk/psutils/psutils-1.23/pstops.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Build/source/texk/psutils/psutils-1.23/pstops.c b/Build/source/texk/psutils/psutils-1.23/pstops.c
index c6b82b960ee..e37a0a27f60 100644
--- a/Build/source/texk/psutils/psutils-1.23/pstops.c
+++ b/Build/source/texk/psutils/psutils-1.23/pstops.c
@@ -34,7 +34,7 @@ static PageSpec *parsespecs(char *str)
head = tail = newspec();
while (*str) {
- if (isdigit(*str)) {
+ if (isdigit((unsigned char)*str)) {
num = parseint(&str);
} else {
switch (*str++) {