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-rw-r--r--string.c2
-rw-r--r--test/ruby/test_string.rb7
2 files changed, 7 insertions, 2 deletions
diff --git a/string.c b/string.c
index bbd23669e6..6cf76e4fd4 100644
--- a/string.c
+++ b/string.c
@@ -9124,7 +9124,7 @@ rb_str_partition(VALUE str, VALUE sep)
pos = rb_reg_search(sep, str, 0, 0);
if (pos < 0) {
failed:
- return rb_ary_new3(3, str, str_new_empty(str), str_new_empty(str));
+ return rb_ary_new3(3, rb_str_dup(str), str_new_empty(str), str_new_empty(str));
}
sep = rb_str_subpat(str, sep, INT2FIX(0));
if (pos == 0 && RSTRING_LEN(sep) == 0) goto failed;
diff --git a/test/ruby/test_string.rb b/test/ruby/test_string.rb
index c7f4521e27..b90c620381 100644
--- a/test/ruby/test_string.rb
+++ b/test/ruby/test_string.rb
@@ -2420,7 +2420,12 @@ CODE
end
assert_equal(["\u30E6\u30FC\u30B6", "@", "\u30C9\u30E1.\u30A4\u30F3"],
- "\u30E6\u30FC\u30B6@\u30C9\u30E1.\u30A4\u30F3".partition(/[@.]/))
+ "\u30E6\u30FC\u30B6@\u30C9\u30E1.\u30A4\u30F3".partition(/[@.]/))
+
+ bug = '[ruby-core:82911]'
+ hello = "hello"
+ hello.partition("hi").map(&:upcase!)
+ assert_equal("hello", hello, bug)
end
def test_rpartition