diff --git a/lib/compiler/aro/aro/Driver/Multilib.zig b/lib/compiler/aro/aro/Driver/Multilib.zig
index 1486cf47bbbb944dcbb8fab9bd11e4467d04b32c..b072e1fc0df45f20eb15ed4690ed8c0d9ed17840 100644
--- a/lib/compiler/aro/aro/Driver/Multilib.zig
+++ b/lib/compiler/aro/aro/Driver/Multilib.zig
@@ -1,12 +1,12 @@
 const std = @import("std");
 const Filesystem = @import("Filesystem.zig").Filesystem;
 
-pub const Flags = std.BoundedArray([]const u8, 6);
+pub const Flags = std.ArrayListUnmanaged([]const u8);
 
 /// Large enough for GCCDetector for Linux; may need to be increased to support other toolchains.
 const max_multilibs = 4;
 
-const MultilibArray = std.BoundedArray(Multilib, max_multilibs);
+const MultilibArray = std.ArrayListUnmanaged(Multilib);
 
 pub const Detected = struct {
     multilibs: MultilibArray = .{},
@@ -15,20 +15,20 @@ pub const Detected = struct {
 
     pub fn filter(self: *Detected, multilib_filter: Filter, fs: Filesystem) void {
         var found_count: usize = 0;
-        for (self.multilibs.constSlice()) |multilib| {
+        for (self.multilibs.items) |multilib| {
             if (multilib_filter.exists(multilib, fs)) {
-                self.multilibs.set(found_count, multilib);
+                self.multilibs.items[found_count] = multilib;
                 found_count += 1;
             }
         }
         self.multilibs.resize(found_count) catch unreachable;
     }
 
-    pub fn select(self: *Detected, flags: Flags) !bool {
+    pub fn select(self: *Detected, flags: []const []const Flags) !bool {
         var filtered: MultilibArray = .{};
-        for (self.multilibs.constSlice()) |multilib| {
-            for (multilib.flags.constSlice()) |multilib_flag| {
-                const matched = for (flags.constSlice()) |arg_flag| {
+        for (self.multilibs.items) |multilib| {
+            for (flags) |multilib_flag| {
+                const matched = for (flags) |arg_flag| {
                     if (std.mem.eql(u8, arg_flag[1..], multilib_flag[1..])) break arg_flag;
                 } else multilib_flag;
                 if (matched[0] != multilib_flag[0]) break;
diff --git a/lib/compiler/aro/aro/Toolchain.zig b/lib/compiler/aro/aro/Toolchain.zig
index d8b4820f667f9af0f854122e54c3b6cce12d0291..a7c19db9dd7bc1a8300aecb2a7122a2ecc89e825 100644
--- a/lib/compiler/aro/aro/Toolchain.zig
+++ b/lib/compiler/aro/aro/Toolchain.zig
@@ -171,8 +171,7 @@ pub fn getLinkerPath(tc: *const Toolchain, buf: []u8) ![]const u8 {
 /// TODO: this isn't exactly right since our target names don't necessarily match up
 /// with GCC's.
 /// For example the Zig target `arm-freestanding-eabi` would need the `arm-none-eabi` tools
-fn possibleProgramNames(raw_triple: ?[]const u8, name: []const u8, buf: *[64]u8) std.BoundedArray([]const u8, 2) {
-    var possible_names: std.BoundedArray([]const u8, 2) = .{};
+fn possibleProgramNames(raw_triple: ?[]const u8, name: []const u8, buf: *[64]u8, possible_names: *std.ArrayListUnmanaged([]const u8)) void {
     if (raw_triple) |triple| {
         if (std.fmt.bufPrint(buf, "{s}-{s}", .{ triple, name })) |res| {
             possible_names.appendAssumeCapacity(res);
@@ -209,9 +208,11 @@ fn getProgramPath(tc: *const Toolchain, name: []const u8, buf: []u8) []const u8
     var fib = std.heap.FixedBufferAllocator.init(&path_buf);
 
     var tool_specific_buf: [64]u8 = undefined;
-    const possible_names = possibleProgramNames(tc.driver.raw_target_triple, name, &tool_specific_buf);
+    var possible_names_buffer: [2][]const u8 = undefined;
+    var possible_names = std.ArrayListUnmanaged.initBuffer(&possible_names_buffer);
+    possibleProgramNames(tc.driver.raw_target_triple, name, &tool_specific_buf, &possible_names);
 
-    for (possible_names.constSlice()) |tool_name| {
+    for (possible_names.items) |tool_name| {
         for (tc.program_paths.items) |program_path| {
             defer fib.reset();
 
diff --git a/lib/compiler/translate-c/Translator.zig b/lib/compiler/translate-c/Translator.zig
index e31eb2e574aca72ba849632064c3dd42fe9b7f9c..bd975bbc4e4564dd12219a29ed1bddb7ce3447d2 100644
--- a/lib/compiler/translate-c/Translator.zig
+++ b/lib/compiler/translate-c/Translator.zig
@@ -3439,8 +3439,8 @@ fn transStringLiteralInitializer(
         const init_list = try t.arena.alloc(ZigNode, @intCast(num_inits));
         for (init_list, 0..) |*item, i| {
             const codepoint = switch (size) {
-                2 => @as(*const u16, @alignCast(@ptrCast(bytes.ptr + i * 2))).*,
-                4 => @as(*const u32, @alignCast(@ptrCast(bytes.ptr + i * 4))).*,
+                2 => @as(*const u16, @ptrCast(@alignCast(bytes.ptr + i * 2))).*,
+                4 => @as(*const u32, @ptrCast(@alignCast(bytes.ptr + i * 4))).*,
                 else => unreachable,
             };
             item.* = try t.createCharLiteralNode(false, codepoint);
@@ -3873,7 +3873,7 @@ fn createNumberNode(t: *Translator, num: anytype, num_kind: enum { int, float })
 
 fn createCharLiteralNode(t: *Translator, narrow: bool, val: u32) TransError!ZigNode {
     return ZigTag.char_literal.create(t.arena, if (narrow)
-        try std.fmt.allocPrint(t.arena, "'{f}'", .{std.zig.fmtChar(&.{@as(u8, @intCast(val))})})
+        try std.fmt.allocPrint(t.arena, "'{f}'", .{std.zig.fmtChar(@intCast(val))})
     else
         try std.fmt.allocPrint(t.arena, "'\\u{{{x}}}'", .{val}));
 }