From 85d87c9ca1f0c0c7fe9efa5ab54e306c6a309de3 Mon Sep 17 00:00:00 2001
From: kcbanner <kcbanner@gmail.com>
Date: Mon, 21 Oct 2024 20:24:58 -0400
Subject: [PATCH] coff: fix incorrect default `image_base` values and re-enable
 shared library tests on Windows

This was the cause of aarch64-windows shared libraries causing  "bad image" errors
during load-time linking. I also re-enabled the tests that were surfacing this bug.
---
 src/link/Coff.zig                              | 10 +++++++---
 test/standalone/c_compiler/build.zig           |  5 -----
 test/standalone/coff_dwarf/build.zig           |  5 -----
 test/standalone/load_dynamic_library/build.zig |  5 -----
 test/standalone/shared_library/build.zig       |  5 -----
 5 files changed, 7 insertions(+), 23 deletions(-)

diff --git a/src/link/Coff.zig b/src/link/Coff.zig
index 1b25ee5e09..eb2c0d6fb5 100644
--- a/src/link/Coff.zig
+++ b/src/link/Coff.zig
@@ -274,11 +274,15 @@ pub fn createEmpty(
 
         .image_base = options.image_base orelse switch (output_mode) {
             .Exe => switch (target.cpu.arch) {
-                .aarch64 => 0x140000000,
-                .thumb, .x86_64, .x86 => 0x400000,
+                .aarch64, .x86_64 => 0x140000000,
+                .thumb, .x86 => 0x400000,
+                else => unreachable,
+            },
+            .Lib => switch (target.cpu.arch) {
+                .aarch64, .x86_64 => 0x180000000,
+                .thumb, .x86 => 0x10000000,
                 else => unreachable,
             },
-            .Lib => 0x10000000,
             .Obj => 0,
         },
 
diff --git a/test/standalone/c_compiler/build.zig b/test/standalone/c_compiler/build.zig
index d4fcde1198..5328d6e01d 100644
--- a/test/standalone/c_compiler/build.zig
+++ b/test/standalone/c_compiler/build.zig
@@ -5,11 +5,6 @@ pub fn build(b: *std.Build) void {
     const test_step = b.step("test", "Test it");
     b.default_step = test_step;
 
-    if (builtin.os.tag == .windows) {
-        // https://github.com/ziglang/zig/issues/16965
-        return;
-    }
-
     add(b, test_step, "test_c_Debug", "test_cpp_Debug", .Debug);
     add(b, test_step, "test_c_ReleaseFast", "test_cpp_ReleaseFast", .ReleaseFast);
     add(b, test_step, "test_c_ReleaseSmall", "test_cpp_ReleaseSmall", .ReleaseSmall);
diff --git a/test/standalone/coff_dwarf/build.zig b/test/standalone/coff_dwarf/build.zig
index 26a8a87da8..bb9879d089 100644
--- a/test/standalone/coff_dwarf/build.zig
+++ b/test/standalone/coff_dwarf/build.zig
@@ -12,11 +12,6 @@ pub fn build(b: *std.Build) void {
     else
         b.resolveTargetQuery(.{ .os_tag = .windows });
 
-    if (builtin.cpu.arch == .aarch64) {
-        // https://github.com/ziglang/zig/issues/18427
-        return;
-    }
-
     const exe = b.addExecutable(.{
         .name = "main",
         .root_source_file = b.path("main.zig"),
diff --git a/test/standalone/load_dynamic_library/build.zig b/test/standalone/load_dynamic_library/build.zig
index 1fe7d6141f..f484d2a6e6 100644
--- a/test/standalone/load_dynamic_library/build.zig
+++ b/test/standalone/load_dynamic_library/build.zig
@@ -10,11 +10,6 @@ pub fn build(b: *std.Build) void {
 
     if (builtin.os.tag == .wasi) return;
 
-    if (builtin.os.tag == .windows) {
-        // https://github.com/ziglang/zig/issues/16960
-        return;
-    }
-
     const lib = b.addSharedLibrary(.{
         .name = "add",
         .root_source_file = b.path("add.zig"),
diff --git a/test/standalone/shared_library/build.zig b/test/standalone/shared_library/build.zig
index c23efd0e92..28c1bdb13e 100644
--- a/test/standalone/shared_library/build.zig
+++ b/test/standalone/shared_library/build.zig
@@ -4,11 +4,6 @@ pub fn build(b: *std.Build) void {
     const test_step = b.step("test", "Test it");
     b.default_step = test_step;
 
-    if (@import("builtin").os.tag == .windows) {
-        // https://github.com/ziglang/zig/issues/16959
-        return;
-    }
-
     const optimize: std.builtin.OptimizeMode = .Debug;
     const target = b.graph.host;
     const lib = b.addSharedLibrary(.{