diff --git a/ChangeLog b/ChangeLog
index 1afccafd67..19d65445c7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+Wed Aug 12 05:19:11 2015  Eric Wong  <e@80x24.org>
+
+	* parse.y (rb_parser_compile_cstr): remove volatile arg
+	  (rb_parser_compile_string): ditto
+	  (rb_parser_compile_file): ditto
+	  (rb_parser_compile_string_path): ditto
+	  (rb_parser_compile_file_path): ditto
+	  [ruby-core:70323] [Misc #11431]
+
 Tue Aug 11 22:59:57 2015  Tanaka Akira  <akr@fsij.org>
 
 	* numeric.c (Init_Numeric): Fix document for Float::MIN and
diff --git a/node.h b/node.h
index 8ae0205d31..c639176ef7 100644
--- a/node.h
+++ b/node.h
@@ -465,11 +465,11 @@ VALUE rb_parser_dump_tree(NODE *node, int comment);
 NODE *rb_parser_append_print(VALUE, NODE *);
 NODE *rb_parser_while_loop(VALUE, NODE *, int, int);
 
-NODE *rb_parser_compile_cstr(volatile VALUE, const char*, const char*, int, int);
-NODE *rb_parser_compile_string(volatile VALUE, const char*, VALUE, int);
-NODE *rb_parser_compile_file(volatile VALUE, const char*, VALUE, int);
-NODE *rb_parser_compile_string_path(volatile VALUE vparser, VALUE fname, VALUE src, int line);
-NODE *rb_parser_compile_file_path(volatile VALUE vparser, VALUE fname, VALUE input, int line);
+NODE *rb_parser_compile_cstr(VALUE, const char*, const char*, int, int);
+NODE *rb_parser_compile_string(VALUE, const char*, VALUE, int);
+NODE *rb_parser_compile_file(VALUE, const char*, VALUE, int);
+NODE *rb_parser_compile_string_path(VALUE vparser, VALUE fname, VALUE src, int line);
+NODE *rb_parser_compile_file_path(VALUE vparser, VALUE fname, VALUE input, int line);
 
 NODE *rb_compile_cstr(const char*, const char*, int, int);
 NODE *rb_compile_string(const char*, VALUE, int);
diff --git a/parse.y b/parse.y
index 3975e513c3..820ea66f1c 100644
--- a/parse.y
+++ b/parse.y
@@ -5580,7 +5580,7 @@ static const rb_data_type_t parser_data_type;
 
 #ifndef RIPPER
 static NODE*
-parser_compile_string(volatile VALUE vparser, VALUE fname, VALUE s, int line)
+parser_compile_string(VALUE vparser, VALUE fname, VALUE s, int line)
 {
     struct parser_params *parser;
     NODE *node;
@@ -5606,13 +5606,13 @@ rb_compile_string(const char *f, VALUE s, int line)
 }
 
 NODE*
-rb_parser_compile_string(volatile VALUE vparser, const char *f, VALUE s, int line)
+rb_parser_compile_string(VALUE vparser, const char *f, VALUE s, int line)
 {
     return rb_parser_compile_string_path(vparser, rb_filesystem_str_new_cstr(f), s, line);
 }
 
 NODE*
-rb_parser_compile_string_path(volatile VALUE vparser, VALUE f, VALUE s, int line)
+rb_parser_compile_string_path(VALUE vparser, VALUE f, VALUE s, int line)
 {
     must_be_ascii_compatible(s);
     return parser_compile_string(vparser, f, s, line);
@@ -5626,7 +5626,7 @@ rb_compile_cstr(const char *f, const char *s, int len, int line)
 }
 
 NODE*
-rb_parser_compile_cstr(volatile VALUE vparser, const char *f, const char *s, int len, int line)
+rb_parser_compile_cstr(VALUE vparser, const char *f, const char *s, int len, int line)
 {
     VALUE str = rb_str_new(s, len);
     return parser_compile_string(vparser, rb_filesystem_str_new_cstr(f), str, line);
@@ -5641,19 +5641,19 @@ lex_io_gets(struct parser_params *parser, VALUE io)
 NODE*
 rb_compile_file(const char *f, VALUE file, int start)
 {
-    VALUE volatile vparser = rb_parser_new();
+    VALUE vparser = rb_parser_new();
 
     return rb_parser_compile_file(vparser, f, file, start);
 }
 
 NODE*
-rb_parser_compile_file(volatile VALUE vparser, const char *f, VALUE file, int start)
+rb_parser_compile_file(VALUE vparser, const char *f, VALUE file, int start)
 {
     return rb_parser_compile_file_path(vparser, rb_filesystem_str_new_cstr(f), file, start);
 }
 
 NODE*
-rb_parser_compile_file_path(volatile VALUE vparser, VALUE fname, VALUE file, int start)
+rb_parser_compile_file_path(VALUE vparser, VALUE fname, VALUE file, int start)
 {
     struct parser_params *parser;
     NODE *node;