From 42a64f6256fb7648deae4d9c635a464ae31d7418 Mon Sep 17 00:00:00 2001
From: Matthew Marshall <matthew.marshall090396@gmail.com>
Date: Sun, 26 Jul 2026 10:07:17 +0100
Subject: [PATCH] Add support for d20bforceinline.

---
 src/compiler/msvc.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/compiler/msvc.rs b/src/compiler/msvc.rs
index 61b5ccab7..1e58a077b 100644
--- a/src/compiler/msvc.rs
+++ b/src/compiler/msvc.rs
@@ -438,6 +438,7 @@ msvc_args!(static ARGS: [ArgInfo<ArgData>; _] = [
     msvc_take_arg!("clr:", OsString, Concatenated, PassThroughWithSuffix),
     msvc_take_arg!("constexpr:", OsString, Concatenated, PassThroughWithSuffix),
     msvc_flag!("d1nodatetime", PassThrough),
+    msvc_flag!("d20bforceinline", PassThrough),
     msvc_take_arg!("deps", PathBuf, Concatenated, DepFile),
     msvc_take_arg!("diagnostics:", OsString, Concatenated, PassThroughWithSuffix),
     msvc_take_arg!("doc", PathBuf, Concatenated, TooHardPath), // Creates an .xdc file.
@@ -2292,6 +2293,7 @@ mod test {
             "-Qpar-",
             "-Gw",
             "/d1nodatetime",
+            "/d20bforceinline",
             "-EHa",
             "-await:strict",
             "/YI",
@@ -2325,6 +2327,7 @@ mod test {
                 "-Qpar-",
                 "-Gw",
                 "/d1nodatetime",
+                "/d20bforceinline",
                 "-EHa",
                 "-await:strict",
                 "/YI",