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ziglang / zig

General-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.
https://ziglang.org
MIT License
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bw.flush(); will cause 'zig build test' hang #21984

Open PegasusPlusUS opened 14 hours ago

PegasusPlusUS commented 14 hours ago

Zig Version

0.13.0

Steps to Reproduce and Observed Behavior

  1. Use 'zig init' to generate default project
  2. Append a test to src/main.zig: 
    test "bw.flush() has to be commentted out" {
try main();
}
  3. Run test with 'zig build test'
  4. zig test runner hangs: [3/5] steps └─ [1/2] run test └─ main.test.bw.flush() has to be commentte

Expected Behavior

If comment out the 'bw.flush();', test can run normally. Since the generated code emphasized 'don't forget to flush!', it might be something wrong within implementation of std.io.bufferedWriter?

nektro commented 14 hours ago

duplicate of https://github.com/ziglang/zig/issues/15091

PegasusPlusUS commented 12 hours ago

Thank a lot! Checking #15091, it was marked as "added this to the 0.11.0 milestone on Apr 10, 2023" So still not resolved?

It's really confusing because if zig want to update building progress, I guess before build complete, test runner already started? Maybe after zig complete building, then test runner start, there will be no conflict on stdout.