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-rw-r--r--byterun/str.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/byterun/str.c b/byterun/str.c
index 79e4ef81b..380e2eb5a 100644
--- a/byterun/str.c
+++ b/byterun/str.c
@@ -67,9 +67,12 @@ CAMLprim value caml_string_set(value str, value index, value newval)
CAMLprim value caml_string_equal(value s1, value s2)
{
- mlsize_t sz1 = Wosize_val(s1);
- mlsize_t sz2 = Wosize_val(s2);
+ mlsize_t sz1, sz2;
value * p1, * p2;
+
+ if (s1 == s2) return Val_true;
+ sz1 = Wosize_val(s1);
+ sz2 = Wosize_val(s2);
if (sz1 != sz2) return Val_false;
for(p1 = Op_val(s1), p2 = Op_val(s2); sz1 > 0; sz1--, p1++, p2++)
if (*p1 != *p2) return Val_false;
@@ -86,6 +89,7 @@ CAMLprim value caml_string_compare(value s1, value s2)
mlsize_t len1, len2;
int res;
+ if (s1 == s2) return Val_int(0);
len1 = caml_string_length(s1);
len2 = caml_string_length(s2);
res = memcmp(String_val(s1), String_val(s2), len1 <= len2 ? len1 : len2);