https://git.ruby-lang.org/ruby.git/commit/?id=e9ecf80d20

From e9ecf80d209ee32c2606b625ad73d48f4103ee51 Mon Sep 17 00:00:00 2001
From: Alan Wu <XrXr@u...>
Date: Mon, 5 Oct 2020 11:19:11 -0400
Subject: Respect redefinition in MicroJIT's opt_minus

---
 ujit_asm.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ujit_asm.h b/ujit_asm.h
index 265c4f894f..72743ac1fb 100644
--- a/ujit_asm.h
+++ b/ujit_asm.h
@@ -227,10 +227,10 @@ x86opnd_t const_ptr_opnd(void* ptr); https://github.com/ruby/ruby/blob/trunk/ujit_asm.h#L227
 
 // Struct member operand with an array index
 #define member_opnd_idx(base_reg, struct_type, member_name, idx) mem_opnd( \
-    8 * sizeof(((struct_type*)0)->member_name),     \
+    8 * sizeof(((struct_type*)0)->member_name[0]),     \
     base_reg,                                       \
     (offsetof(struct_type, member_name) +           \
-     sizeof(((struct_type*)0)->member_name) * idx)  \
+     sizeof(((struct_type*)0)->member_name[0]) * idx)  \
 )
 
 // Code block methods
-- 
cgit v1.2.1


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