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Diffstat (limited to 'Build/source/texk/dvipdfm-x/cid.c')
-rw-r--r--Build/source/texk/dvipdfm-x/cid.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Build/source/texk/dvipdfm-x/cid.c b/Build/source/texk/dvipdfm-x/cid.c
index 48f79843f58..35a562394a0 100644
--- a/Build/source/texk/dvipdfm-x/cid.c
+++ b/Build/source/texk/dvipdfm-x/cid.c
@@ -783,7 +783,7 @@ get_cidsysinfo (const char *map_name, fontmap_opt *fmap_opt)
CIDFONT_DEBUG_STR, fmap_opt->charcoll);
q++;
- if (!isdigit(q[0]))
+ if (!isdigit((unsigned char)q[0]))
ERROR("%s: String can't be converted to REGISTRY-ORDERING-SUPPLEMENT: %s",
CIDFONT_DEBUG_STR, fmap_opt->charcoll);