From a6b50f379d4b71acac73ac6b22cbe2d2c5b50b3f Mon Sep 17 00:00:00 2001
From: shyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 2 Jan 2018 06:41:53 +0000
Subject: [PATCH] statement experssion is a GCCism

should mark as such.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61557 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 include/ruby/ruby.h | 12 ++++++------
 internal.h          |  6 +++---
 ruby_atomic.h       |  6 +++---
 3 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/include/ruby/ruby.h b/include/ruby/ruby.h
index 07e8f71311..3f9250dbe7 100644
--- a/include/ruby/ruby.h
+++ b/include/ruby/ruby.h
@@ -1151,10 +1151,10 @@ void *rb_check_typeddata(VALUE, const rb_data_type_t *);
     (void)((sval) = (type *)DATA_PTR(result));
 
 #ifdef __GNUC__
-#define Data_Make_Struct(klass,type,mark,free,sval) ({\
+#define Data_Make_Struct(klass,type,mark,free,sval) RB_GNUC_EXTENSION_BLOCK(\
     Data_Make_Struct0(data_struct_obj, klass, type, sizeof(type), mark, free, sval); \
-    data_struct_obj; \
-})
+    data_struct_obj \
+)
 #else
 #define Data_Make_Struct(klass,type,mark,free,sval) (\
     rb_data_object_make((klass),(RUBY_DATA_FUNC)(mark),(RUBY_DATA_FUNC)(free),(void **)&(sval),sizeof(type)) \
@@ -1169,10 +1169,10 @@ void *rb_check_typeddata(VALUE, const rb_data_type_t *);
     (void)((sval) = (type *)DATA_PTR(result));
 
 #ifdef __GNUC__
-#define TypedData_Make_Struct(klass, type, data_type, sval) ({\
+#define TypedData_Make_Struct(klass, type, data_type, sval) RB_GNUC_EXTENSION_BLOCK(\
     TypedData_Make_Struct0(data_struct_obj, klass, type, sizeof(type), data_type, sval); \
-    data_struct_obj; \
-})
+    data_struct_obj \
+)
 #else
 #define TypedData_Make_Struct(klass, type, data_type, sval) (\
     rb_data_typed_object_make((klass),(data_type),(void **)&(sval),sizeof(type)) \
diff --git a/internal.h b/internal.h
index 8d92d9510a..25b382e554 100644
--- a/internal.h
+++ b/internal.h
@@ -109,7 +109,7 @@ extern "C" {
     __builtin_mul_overflow_p((a), (b), (__typeof__(a * b))0)
 #elif defined HAVE_BUILTIN___BUILTIN_MUL_OVERFLOW
 #define MUL_OVERFLOW_P(a, b) \
-    ({__typeof__(a) c; __builtin_mul_overflow((a), (b), &c);})
+    RB_GNUC_EXTENSION_BLOCK(__typeof__(a) c; __builtin_mul_overflow((a), (b), &c))
 #endif
 
 #define MUL_OVERFLOW_SIGNED_INTEGER_P(a, b, min, max) ( \
@@ -122,10 +122,10 @@ extern "C" {
 #ifdef HAVE_BUILTIN___BUILTIN_MUL_OVERFLOW_P
 /* __builtin_mul_overflow_p can take bitfield */
 /* and GCC permits bitfields for integers other than int */
-#define MUL_OVERFLOW_FIXNUM_P(a, b) ({ \
+#define MUL_OVERFLOW_FIXNUM_P(a, b) RB_GNUC_EXTENSION_BLOCK( \
     struct { long fixnum : SIZEOF_LONG * CHAR_BIT - 1; } c; \
     __builtin_mul_overflow_p((a), (b), c.fixnum); \
-})
+)
 #else
 #define MUL_OVERFLOW_FIXNUM_P(a, b) MUL_OVERFLOW_SIGNED_INTEGER_P(a, b, FIXNUM_MIN, FIXNUM_MAX)
 #endif
diff --git a/ruby_atomic.h b/ruby_atomic.h
index 4bc9f37e0d..f74cf997a1 100644
--- a/ruby_atomic.h
+++ b/ruby_atomic.h
@@ -9,10 +9,10 @@ typedef unsigned int rb_atomic_t;
 # define ATOMIC_DEC(var) __atomic_fetch_sub(&(var), 1, __ATOMIC_SEQ_CST)
 # define ATOMIC_OR(var, val) __atomic_fetch_or(&(var), (val), __ATOMIC_SEQ_CST)
 # define ATOMIC_EXCHANGE(var, val) __atomic_exchange_n(&(var), (val), __ATOMIC_SEQ_CST)
-# define ATOMIC_CAS(var, oldval, newval) \
-({ __typeof__(var) oldvaldup = (oldval); /* oldval should not be modified */ \
+# define ATOMIC_CAS(var, oldval, newval) RB_GNUC_EXTENSION_BLOCK( \
+   __typeof__(var) oldvaldup = (oldval); /* oldval should not be modified */ \
    __atomic_compare_exchange_n(&(var), &oldvaldup, (newval), 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST); \
-   oldvaldup; })
+   oldvaldup )
 
 # define ATOMIC_SIZE_ADD(var, val) __atomic_fetch_add(&(var), (val), __ATOMIC_SEQ_CST)
 # define ATOMIC_SIZE_SUB(var, val) __atomic_fetch_sub(&(var), (val), __ATOMIC_SEQ_CST)