Commit 0c8bf405eb

@@ -474,7 +474,7 @@ pub fn inferSdkVersion(gpa: Allocator, comp: *const Compilation) ?std.SemanticVe
 
     const options = comp.bin_file.options;
 
-    const sdk_layout = options.darwin_sdk_layout.?;
+    const sdk_layout = options.darwin_sdk_layout orelse return null;
     const sdk_dir = switch (sdk_layout) {
         .sdk => options.sysroot.?,
         .vendored => std.fs.path.join(arena, &.{ comp.zig_lib_directory.path.?, "libc", "darwin" }) catch return null,
@@ -482,7 +482,7 @@ pub fn inferSdkVersion(gpa: Allocator, comp: *const Compilation) ?std.SemanticVe
     if (readSdkVersionFromSettings(arena, sdk_dir)) |ver| {
         return parseSdkVersion(ver);
     } else |_| {
-        // We control vendored and reading settings should always succeed.
+        // Read from settings should always succeed when vendored.
         if (sdk_layout == .vendored) @panic("zig installation bug: unable to parse SDK version");
     }
 

@@ -652,7 +652,7 @@ pub fn resolveLibSystem(
             "libSystem",
         )) break :success;
 
-        switch (self.base.options.darwin_sdk_layout.?) {
+        if (self.base.options.darwin_sdk_layout) |sdk_layout| switch (sdk_layout) {
             .sdk => {
                 const dir = try fs.path.join(tmp_arena, &[_][]const u8{ self.base.options.sysroot.?, "usr", "lib" });
                 if (try accessLibPath(tmp_arena, &test_path, &checked_paths, dir, "libSystem")) break :success;
@@ -661,7 +661,7 @@ pub fn resolveLibSystem(
                 const dir = try comp.zig_lib_directory.join(tmp_arena, &[_][]const u8{ "libc", "darwin" });
                 if (try accessLibPath(tmp_arena, &test_path, &checked_paths, dir, "libSystem")) break :success;
             },
-        }
+        };
 
         try self.reportMissingLibraryError(checked_paths.items, "unable to find libSystem system library", .{});
         return;