Add test for MSVC WHOLEARCHIVE

Author: ChrisDenton

tests/run-make/msvc-wholearchive/c.c

@@ -0,0 +1 @@
+// This page is intentionally left blank

tests/run-make/msvc-wholearchive/dll.def

@@ -0,0 +1,4 @@
+LIBRARY dll
+EXPORTS
+        hello
+        number

tests/run-make/msvc-wholearchive/rmake.rs

@@ -0,0 +1,22 @@
+//@ only-msvc
+// Reason: this is testing the MSVC linker
+
+// This is a regression test for #129020
+// It ensures we can link a rust staticlib into DLL using the MSVC linker
+
+use run_make_support::run::cmd;
+use run_make_support::rustc;
+
+fn main() {
+    // BUild the staticlib
+    rustc().crate_type("staticlib").input("static.rs").output("static.lib").run();
+    // Create an empty obj file (using the C compiler)
+    // Then use it to link in the staticlib using `/WHOLEARCHIVE` and produce a DLL.
+    // We call link.exe directly because this test is only for MSVC and not their LLVM equivalents
+    cmd("cl.exe").args(&["c.c", "-nologo", "-c", "-MT"]).run();
+    cmd("link.exe")
+        .args(&["c", "/WHOLEARCHIVE:./static.lib", "/dll", "/def:dll.def", "/out:dll.dll"])
+        // Import libs
+        .args(&["libcmt.lib", "kernel32.lib", "ws2_32.lib", "ntdll.lib", "userenv.lib"])
+        .run();
+}

tests/run-make/msvc-wholearchive/static.rs

@@ -0,0 +1,9 @@
+#[no_mangle]
+pub extern "C" fn hello() {
+    println!("Hello world!");
+}
+
+#[no_mangle]
+pub extern "C" fn number() -> u32 {
+    42
+}