https://git.ruby-lang.org/ruby.git/commit/?id=a160b2f567

From a160b2f56716f70fa3e485ae89875da48baefc1d Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Thu, 16 May 2019 15:51:37 +0900
Subject: Make COROUTINE_REGISTERS compile-time only not to be a global symbol


diff --git a/coroutine/amd64/Context.h b/coroutine/amd64/Context.h
index 1801c1e..4ae31d1 100644
--- a/coroutine/amd64/Context.h
+++ b/coroutine/amd64/Context.h
@@ -16,7 +16,7 @@ extern "C" { https://github.com/ruby/ruby/blob/trunk/coroutine/amd64/Context.h#L16
 
 #define COROUTINE __attribute__((noreturn)) void
 
-const size_t COROUTINE_REGISTERS = 6;
+enum {COROUTINE_REGISTERS = 6};
 
 typedef struct
 {
diff --git a/coroutine/arm32/Context.h b/coroutine/arm32/Context.h
index 60732df..d2bb582 100644
--- a/coroutine/arm32/Context.h
+++ b/coroutine/arm32/Context.h
@@ -16,7 +16,7 @@ extern "C" { https://github.com/ruby/ruby/blob/trunk/coroutine/arm32/Context.h#L16
 
 #define COROUTINE __attribute__((noreturn)) void
 
-const size_t COROUTINE_REGISTERS = 9;
+enum {COROUTINE_REGISTERS = 9};
 
 typedef struct
 {
diff --git a/coroutine/arm64/Context.h b/coroutine/arm64/Context.h
index 03b91fd..ed646e8 100644
--- a/coroutine/arm64/Context.h
+++ b/coroutine/arm64/Context.h
@@ -16,7 +16,7 @@ extern "C" { https://github.com/ruby/ruby/blob/trunk/coroutine/arm64/Context.h#L16
 
 #define COROUTINE __attribute__((noreturn)) void
 
-const size_t COROUTINE_REGISTERS = 0xb0 / 8;
+enum {COROUTINE_REGISTERS = 0xb0 / 8};
 
 typedef struct
 {
diff --git a/coroutine/ppc64le/Context.h b/coroutine/ppc64le/Context.h
index de592f5..5971cd8 100644
--- a/coroutine/ppc64le/Context.h
+++ b/coroutine/ppc64le/Context.h
@@ -9,9 +9,11 @@ extern "C" { https://github.com/ruby/ruby/blob/trunk/coroutine/ppc64le/Context.h#L9
 
 #define COROUTINE __attribute__((noreturn)) void
 
-const size_t COROUTINE_REGISTERS =
+enum {
+  COROUTINE_REGISTERS =
   19  /* 18 general purpose registers (r14-r31) and 1 return address */
-  + 4;  /* space for fiber_entry() to store the link register */
+  + 4  /* space for fiber_entry() to store the link register */
+};
 
 typedef struct
 {
diff --git a/coroutine/win32/Context.h b/coroutine/win32/Context.h
index aa9f17d..779a9a8 100644
--- a/coroutine/win32/Context.h
+++ b/coroutine/win32/Context.h
@@ -17,7 +17,7 @@ extern "C" { https://github.com/ruby/ruby/blob/trunk/coroutine/win32/Context.h#L17
 #define COROUTINE __declspec(noreturn) void __fastcall
 
 /* This doesn't include thread information block */
-const size_t COROUTINE_REGISTERS = 4;
+enum {COROUTINE_REGISTERS = 4};
 
 typedef struct
 {
diff --git a/coroutine/win64/Context.h b/coroutine/win64/Context.h
index 16a8f58..1c78dd5 100644
--- a/coroutine/win64/Context.h
+++ b/coroutine/win64/Context.h
@@ -16,7 +16,7 @@ extern "C" { https://github.com/ruby/ruby/blob/trunk/coroutine/win64/Context.h#L16
 
 #define COROUTINE __declspec(noreturn) void
 
-const size_t COROUTINE_REGISTERS = 8;
+enum {COROUTINE_REGISTERS = 8};
 const size_t COROUTINE_XMM_REGISTERS = 1+10*2;
 
 typedef struct
diff --git a/coroutine/x86/Context.h b/coroutine/x86/Context.h
index b077227..b471ecd 100644
--- a/coroutine/x86/Context.h
+++ b/coroutine/x86/Context.h
@@ -16,7 +16,7 @@ extern "C" { https://github.com/ruby/ruby/blob/trunk/coroutine/x86/Context.h#L16
 
 #define COROUTINE __attribute__((noreturn, fastcall)) void
 
-const size_t COROUTINE_REGISTERS = 4;
+enum {COROUTINE_REGISTERS = 4};
 
 typedef struct
 {
-- 
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