5 files changed, 17 insertions, 5 deletions

diff --git a/load.c b/load.c
index 544357daba..57a9c9c287 100644
--- a/load.c
+++ b/load.c
@@ -1016,7 +1016,7 @@ rb_require_internal(VALUE fname, int safe)
 	RUBY_DTRACE_HOOK(FIND_REQUIRE_RETURN, RSTRING_PTR(fname));
 
 	if (found) {
-	    if (!path || !(ftptr = load_lock(RSTRING_PTR(path)))) {
+	    if (!path || !(path = rb_fstring(path), ftptr = load_lock(RSTRING_PTR(path)))) {
 		result = 0;
 	    }
 	    else if (!*ftptr) {
diff --git a/parse.y b/parse.y
index 473ae0e216..b81dbbc373 100644
--- a/parse.y
+++ b/parse.y
@@ -4941,7 +4941,7 @@ yycompile(VALUE vparser, struct parser_params *p, VALUE fname, int line)
 	p->ruby_sourcefile = "(none)";
     }
     else {
-	p->ruby_sourcefile_string = rb_str_new_frozen(fname);
+	p->ruby_sourcefile_string = rb_fstring(fname);
 	p->ruby_sourcefile = StringValueCStr(fname);
     }
     p->ruby_sourceline = line - 1;
@@ -8760,7 +8760,7 @@ gettable(struct parser_params *p, ID id, const YYLTYPE *loc)
 	    if (NIL_P(file))
 		file = rb_str_new(0, 0);
 	    else
-		file = rb_str_dup(rb_fstring(file));
+		file = rb_str_dup(file);
 	    node = NEW_STR(add_mark_object(p, file), loc);
 	}
 	return node;
diff --git a/test/ruby/test_eval.rb b/test/ruby/test_eval.rb
index 8900b4f165..9cb69ddc37 100644
--- a/test/ruby/test_eval.rb
+++ b/test/ruby/test_eval.rb
@@ -497,6 +497,17 @@ class TestEval < Test::Unit::TestCase
     }, '[Bug #10368]'
   end
 
+  def test_gced_eval_location
+    Dir.mktmpdir do |d|
+      File.write("#{d}/2.rb", "")
+      File.write("#{d}/1.rb", "require_relative '2'\n""__FILE__\n")
+      file = "1.rb"
+      path = File.expand_path(file, d)
+      assert_equal(path, eval(File.read(path), nil, File.expand_path(file, d)))
+      assert_equal(path, eval(File.read(path), nil, File.expand_path(file, d)))
+    end
+  end
+
   def orphan_proc
     proc {eval("return :ng")}
   end
diff --git a/version.h b/version.h
index d5cc0572c7..3af9fe51a7 100644
--- a/version.h
+++ b/version.h
@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.6.3"
 #define RUBY_RELEASE_DATE RUBY_RELEASE_YEAR_STR"-"RUBY_RELEASE_MONTH_STR"-"RUBY_RELEASE_DAY_STR
-#define RUBY_PATCHLEVEL 86
+#define RUBY_PATCHLEVEL 87
 
 #define RUBY_RELEASE_YEAR 2019
 #define RUBY_RELEASE_MONTH 8
diff --git a/vm_eval.c b/vm_eval.c
index 0e7047af65..e759197182 100644
--- a/vm_eval.c
+++ b/vm_eval.c
@@ -1266,6 +1266,7 @@ eval_make_iseq(VALUE src, VALUE fname, int line, const rb_binding_t *bind,
     }
 
     if (fname != Qundef) {
+        if (!NIL_P(fname)) fname = rb_fstring(fname);
 	realpath = fname;
     }
     else if (bind) {
@@ -1275,7 +1276,7 @@ eval_make_iseq(VALUE src, VALUE fname, int line, const rb_binding_t *bind,
 	rb_parser_warn_location(parser, TRUE);
     }
     else {
-	fname = rb_usascii_str_new_cstr("(eval)");
+	fname = rb_fstring_lit("(eval)");
     }
 
     rb_parser_set_context(parser, base_block, FALSE);