1 files changed, 13 insertions, 1 deletions
diff --git a/lib/std/Random/benchmark.zig b/lib/std/Random/benchmark.zig
index 3141be3c3c..4f6198dee7 100644
--- a/lib/std/Random/benchmark.zig
+++ b/lib/std/Random/benchmark.zig
@@ -122,7 +122,9 @@ fn mode(comptime x: comptime_int) comptime_int {
 }
 
 pub fn main() !void {
-    const stdout = std.fs.File.stdout().deprecatedWriter();
+    var stdout_buffer: [0x100]u8 = undefined;
+    var stdout_writer = std.fs.File.stdout().writer(&stdout_buffer);
+    const stdout = &stdout_writer.interface;
 
     var buffer: [1024]u8 = undefined;
     var fixed = std.heap.FixedBufferAllocator.init(buffer[0..]);
@@ -139,6 +141,7 @@ pub fn main() !void {
     while (i < args.len) : (i += 1) {
         if (std.mem.eql(u8, args[i], "--mode")) {
             try stdout.print("{}\n", .{builtin.mode});
+            try stdout.flush();
             return;
         } else if (std.mem.eql(u8, args[i], "--filter")) {
             i += 1;
@@ -179,6 +182,8 @@ pub fn main() !void {
             inline for (prngs) |R| {
                 if (filter == null or std.mem.indexOf(u8, R.name, filter.?) != null) {
                     try stdout.print("{s} (long outputs)\n", .{R.name});
+                    try stdout.flush();
+
                     const result_long = try benchmark(R, count, long_block_size);
                     try stdout.print("    {:5} MiB/s\n", .{result_long.throughput / (1 * MiB)});
                 }
@@ -188,6 +193,8 @@ pub fn main() !void {
             inline for (prngs) |R| {
                 if (filter == null or std.mem.indexOf(u8, R.name, filter.?) != null) {
                     try stdout.print("{s} (short outputs)\n", .{R.name});
+                    try stdout.flush();
+
                     const result_short = try benchmark(R, count, short_block_size);
                     try stdout.print("    {:5} MiB/s\n", .{result_short.throughput / (1 * MiB)});
                 }
@@ -199,6 +206,8 @@ pub fn main() !void {
             inline for (csprngs) |R| {
                 if (filter == null or std.mem.indexOf(u8, R.name, filter.?) != null) {
                     try stdout.print("{s} (cryptographic, long outputs)\n", .{R.name});
+                    try stdout.flush();
+
                     const result_long = try benchmark(R, count, long_block_size);
                     try stdout.print("    {:5} MiB/s\n", .{result_long.throughput / (1 * MiB)});
                 }
@@ -208,10 +217,13 @@ pub fn main() !void {
             inline for (csprngs) |R| {
                 if (filter == null or std.mem.indexOf(u8, R.name, filter.?) != null) {
                     try stdout.print("{s} (cryptographic, short outputs)\n", .{R.name});
+                    try stdout.flush();
+
                     const result_short = try benchmark(R, count, short_block_size);
                     try stdout.print("    {:5} MiB/s\n", .{result_short.throughput / (1 * MiB)});
                 }
             }
         }
     }
+    try stdout.flush();
 }