add standalone test for only dependending on the emitted assembly and…

… not the bin

test/standalone/build.zig.zon

@@ -59,6 +59,9 @@
         //.issue_12588 = .{
         //    .path = "issue_12588",
         //},
+        .emit_asm_no_bin = .{
+           .path = "emit_asm_no_bin",
+        },
         .child_process = .{
             .path = "child_process",
         },

test/standalone/emit_asm_no_bin/build.zig

@@ -0,0 +1,25 @@
+const std = @import("std");
+
+pub fn build(b: *std.Build) void {
+    const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{});
+
+    const main = b.addExecutable(.{
+        .name = "main",
+        .root_source_file = b.path("main.zig"),
+        .optimize = optimize,
+        .target = target,
+    });
+
+    const assemble = b.addExecutable(.{
+        .name = "assemble",
+        .optimize = optimize,
+        .target = target,
+    });
+
+    // Note: the `main` step only has a dependency on the assembly file, and so
+    // should pass -fno-emit-bin. Don't depend on main otherwise in this test.
+    assemble.addAssemblyFile(main.getEmittedAsm());
+
+    b.installArtifact(assemble);
+}

test/standalone/emit_asm_no_bin/main.zig

@@ -0,0 +1 @@
+pub fn main() void {}