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-rw-r--r--Parser/tokenizer.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Parser/tokenizer.c b/Parser/tokenizer.c
index a79ea81..3b1d6a6 100644
--- a/Parser/tokenizer.c
+++ b/Parser/tokenizer.c
@@ -229,7 +229,7 @@ get_coding_spec(const char *s, int size)
} while (t[0] == '\x20' || t[0] == '\t');
begin = t;
- while (isalnum((int)t[0]) ||
+ while (isalnum(Py_CHARMASK(t[0])) ||
t[0] == '-' || t[0] == '_' || t[0] == '.')
t++;