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-rw-r--r--libguile/strings.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/libguile/strings.h b/libguile/strings.h
index 53a6e2ba9..cc3b54669 100644
--- a/libguile/strings.h
+++ b/libguile/strings.h
@@ -57,6 +57,7 @@
#define SCM_STRING_CHARS(x) ((char *) (SCM_CELL_WORD_1 (x)))
#endif
#define SCM_SET_STRING_CHARS(s, c) (SCM_SET_CELL_WORD_1 ((s), (c)))
+#define SCM_STRING_MAX_LENGTH ((1L << 24) - 1)
#define SCM_STRING_LENGTH(x) (((unsigned long) SCM_CELL_WORD_0 (x)) >> 8)
#define SCM_SET_STRING_LENGTH(s, l) (SCM_SET_CELL_WORD_0 ((s), ((l) << 8) + scm_tc7_string))