fix build runner on windows

3 files changed, 35 insertions, 5 deletions

diff --git a/std/os/child_process.zig b/std/os/child_process.zig
index 1b7639fb71..0b3040cdc9 100644
--- a/std/os/child_process.zig
+++ b/std/os/child_process.zig
@@ -160,7 +160,7 @@ pub const ChildProcess = struct {
                 else => os.unexpectedErrorWindows(err),
             };
         }
-        self.waitUnwrappedWindows();
+        try self.waitUnwrappedWindows();
         return ??self.term;
     }
 
diff --git a/std/os/index.zig b/std/os/index.zig
index d8b2303981..a2da2ec673 100644
--- a/std/os/index.zig
+++ b/std/os/index.zig
@@ -38,6 +38,7 @@ pub const windowsLoadDll = windows_util.windowsLoadDll;
 pub const windowsUnloadDll = windows_util.windowsUnloadDll; 
 pub const createWindowsEnvBlock = windows_util.createWindowsEnvBlock;
 
+pub const WindowsWaitError = windows_util.WaitError;
 pub const WindowsOpenError = windows_util.OpenError;
 pub const WindowsWriteError = windows_util.WriteError;
 
@@ -605,7 +606,9 @@ test "os.getCwd" {
     _ = getCwd(debug.global_allocator);
 }
 
-pub fn symLink(allocator: &Allocator, existing_path: []const u8, new_path: []const u8) !void {
+pub const SymLinkError = PosixSymLinkError || WindowsSymLinkError;
+
+pub fn symLink(allocator: &Allocator, existing_path: []const u8, new_path: []const u8) SymLinkError!void {
     if (is_windows) {
         return symLinkWindows(allocator, existing_path, new_path);
     } else {
@@ -613,7 +616,12 @@ pub fn symLink(allocator: &Allocator, existing_path: []const u8, new_path: []con
     }
 }
 
-pub fn symLinkWindows(allocator: &Allocator, existing_path: []const u8, new_path: []const u8) !void {
+pub const WindowsSymLinkError = error {
+    OutOfMemory,
+    Unexpected,
+};
+
+pub fn symLinkWindows(allocator: &Allocator, existing_path: []const u8, new_path: []const u8) WindowsSymLinkError!void {
     const existing_with_null = try cstr.addNullByte(allocator, existing_path);
     defer allocator.free(existing_with_null);
     const new_with_null = try cstr.addNullByte(allocator, new_path);
@@ -627,7 +635,23 @@ pub fn symLinkWindows(allocator: &Allocator, existing_path: []const u8, new_path
     }
 }
 
-pub fn symLinkPosix(allocator: &Allocator, existing_path: []const u8, new_path: []const u8) !void {
+pub const PosixSymLinkError = error {
+    OutOfMemory,
+    AccessDenied,
+    DiskQuota,
+    PathAlreadyExists,
+    FileSystem,
+    SymLinkLoop,
+    NameTooLong,
+    FileNotFound,
+    SystemResources,
+    NoSpaceLeft,
+    ReadOnlyFileSystem,
+    NotDir,
+    Unexpected,
+};
+
+pub fn symLinkPosix(allocator: &Allocator, existing_path: []const u8, new_path: []const u8) PosixSymLinkError!void {
     const full_buf = try allocator.alloc(u8, existing_path.len + new_path.len + 2);
     defer allocator.free(full_buf);
 
diff --git a/std/os/windows/util.zig b/std/os/windows/util.zig
index e2d7c14149..c19a5789e7 100644
--- a/std/os/windows/util.zig
+++ b/std/os/windows/util.zig
@@ -7,7 +7,13 @@ const mem = std.mem;
 const BufMap = std.BufMap;
 const cstr = std.cstr;
 
-pub fn windowsWaitSingle(handle: windows.HANDLE, milliseconds: windows.DWORD) !void {
+pub const WaitError = error {
+    WaitAbandoned,
+    WaitTimeOut,
+    Unexpected,
+};
+
+pub fn windowsWaitSingle(handle: windows.HANDLE, milliseconds: windows.DWORD) WaitError!void {
     const result = windows.WaitForSingleObject(handle, milliseconds);
     return switch (result) {
         windows.WAIT_ABANDONED => error.WaitAbandoned,