tools: build all tools in ci to prevent bitrot

No LLVM assertions were triggered for me.
Closes #12015
Closes #12022
Closes #12223

Author: Jan Philipp Hafer

test/standalone.zig

@@ -84,30 +84,20 @@ pub fn addCases(cases: *tests.StandaloneContext) void {
     }
     cases.addBuildFile("test/standalone/issue_12706/build.zig", .{});
 
-    // Ensure the development tools are buildable.
-
-    // Disabled due to tripping LLVM 13 assertion:
-    // https://github.com/ziglang/zig/issues/12015
-    //cases.add("tools/gen_spirv_spec.zig");
-
-    if (builtin.zig_backend == .stage1) { // https://github.com/ziglang/zig/issues/12223
-        cases.add("tools/gen_stubs.zig");
-    }
+    // Ensure the development tools are buildable. Alphabetically sorted.
+    // No need to build `tools/spirv/grammar.zig`.
+    cases.add("tools/extract-grammar.zig");
+    cases.add("tools/gen_outline_atomics.zig");
+    cases.add("tools/gen_spirv_spec.zig");
+    cases.add("tools/gen_stubs.zig");
     cases.add("tools/generate_linux_syscalls.zig");
     cases.add("tools/process_headers.zig");
     cases.add("tools/update-license-headers.zig");
     cases.add("tools/update-linux-headers.zig");
-
-    // Disabled due to tripping LLVM 13 assertion:
-    // https://github.com/ziglang/zig/issues/12022
-    //cases.add("tools/update_clang_options.zig");
-
+    cases.add("tools/update_clang_options.zig");
     cases.add("tools/update_cpu_features.zig");
     cases.add("tools/update_glibc.zig");
-
-    // Disabled due to tripping LLVM 13 assertion:
-    // https://github.com/ziglang/zig/issues/12015
-    //cases.add("tools/update_spirv_features.zig");
+    cases.add("tools/update_spirv_features.zig");
 
     cases.addBuildFile("test/standalone/issue_13030/build.zig", .{ .build_modes = true });
     cases.addBuildFile("test/standalone/emit_asm_and_bin/build.zig", .{});

tools/extract-grammar.zig

@@ -38,12 +38,10 @@ const Buffer = struct {
 /// be byte-indexed with a u32 integer.
 const max_src_size = std.math.maxInt(u32);
 
-var stdout = io.getStdOut().writer();
-
 pub fn main() !void {
+    const stdout_wr = io.getStdOut().writer();
     var arena = heap.ArenaAllocator.init(heap.page_allocator);
     defer arena.deinit(); // NOTE(mperillo): Can be removed.
-
     const allocator = arena.allocator();
 
     var args_it = try process.argsWithAllocator(allocator);
@@ -77,7 +75,7 @@ pub fn main() !void {
                 if (mem.indexOf(u8, doc, "<-") != null) {
                     // Separate each doc with an empty line.  This in turn will
                     // ensure that rules are separate by an empty line.
-                    try stdout.print("{s}\n", .{doc});
+                    try stdout_wr.print("{s}\n", .{doc});
                 }
             },
             else => {},

tools/gen_stubs.zig

@@ -437,7 +437,7 @@ fn parseElf(parse: Parse, comptime is_64: bool, comptime endian: builtin.Endian)
     const dynstr = elf_bytes[dynstr_offset..];
 
     // Sort the list by address, ascending.
-    std.sort.sort(Sym, dyn_syms, {}, S.symbolAddrLessThan);
+    std.sort.sort(Sym, @alignCast(8, dyn_syms), {}, S.symbolAddrLessThan);
 
     for (dyn_syms) |sym| {
         const this_section = s(sym.st_shndx);