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-rw-r--r--src/lib/aplwc_internal.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/lib/aplwc_internal.h b/src/lib/aplwc_internal.h
index ca7e719..148fd58 100644
--- a/src/lib/aplwc_internal.h
+++ b/src/lib/aplwc_internal.h
@@ -163,6 +163,7 @@ int valid_ref(struct aplwc_ref *);
#define MEMPTRS_EXIT(aplwc) memptrs_remove(aplwc, &memptrs_frame)
/* string.c */
+#define INVALID_CHAR UINT32_MAX
struct string *chars_to_string(struct aplwc *, const char *, int len);
uint32_t string_char(struct string *, size_t);
size_t char_length(struct string *, size_t);