link-test: add test for TBDv3 updated parsing logic

test/link.zig

@@ -160,6 +160,10 @@ pub const cases = [_]Case{
         .build_root = "test/link/macho/strict_validation",
         .import = @import("link/macho/strict_validation/build.zig"),
     },
+    .{
+        .build_root = "test/link/macho/tbdv3",
+        .import = @import("link/macho/tbdv3/build.zig"),
+    },
     .{
         .build_root = "test/link/macho/tls",
         .import = @import("link/macho/tls/build.zig"),

test/link/macho/tbdv3/a.c

@@ -0,0 +1,3 @@
+int getFoo() {
+  return 42;
+}

test/link/macho/tbdv3/build.zig

@@ -0,0 +1,56 @@
+const std = @import("std");
+const builtin = @import("builtin");
+
+pub const requires_symlinks = true;
+pub const requires_macos_sdk = false;
+
+pub fn build(b: *std.Build) void {
+    const test_step = b.step("test", "Test it");
+    b.default_step = test_step;
+
+    add(b, test_step, .Debug);
+    add(b, test_step, .ReleaseFast);
+    add(b, test_step, .ReleaseSmall);
+    add(b, test_step, .ReleaseSafe);
+}
+
+fn add(b: *std.Build, test_step: *std.Build.Step, optimize: std.builtin.OptimizeMode) void {
+    const target: std.zig.CrossTarget = .{ .os_tag = .macos };
+
+    const lib = b.addSharedLibrary(.{
+        .name = "a",
+        .version = .{ .major = 1, .minor = 0, .patch = 0 },
+        .optimize = optimize,
+        .target = target,
+    });
+    lib.addCSourceFile("a.c", &.{});
+    lib.linkLibC();
+
+    const tbd_file = b.addWriteFile("liba.tbd",
+        \\--- !tapi-tbd-v3
+        \\archs:           [ arm64 ]
+        \\uuids:           [ 'arm64: DEADBEEF' ]
+        \\platform:        macos
+        \\install-name:    @rpath/liba.dylib
+        \\current-version: 0
+        \\exports:         
+        \\  - archs:           [ arm64 ]
+        \\    symbols:         [ _getFoo ]
+    );
+
+    const exe = b.addExecutable(.{
+        .name = "main",
+        .root_source_file = .{ .path = "main.c" },
+        .optimize = optimize,
+        .target = target,
+    });
+    exe.linkSystemLibrary("a");
+    exe.addLibraryPathDirectorySource(tbd_file.getDirectorySource());
+    exe.addRPathDirectorySource(lib.getOutputDirectorySource());
+    exe.linkLibC();
+
+    const run = b.addRunArtifact(exe);
+    run.skip_foreign_checks = true;
+
+    test_step.dependOn(&run.step);
+}

test/link/macho/tbdv3/main.c

@@ -0,0 +1,7 @@
+#include <stdio.h>
+
+int getFoo();
+
+int main() {
+  return getFoo() - 42;
+}