Return correct value from futex_wait.

2020-10-02 01:49:20 +02:00 · 2020-10-02 01:49:20 +02:00 · 1c582e7c96
commit 1c582e7c96
parent 69cea1dc92
1 changed files with 2 additions and 0 deletions
--- a/src/shims/posix/linux/sync.rs
+++ b/src/shims/posix/linux/sync.rs
@ -36,9 +36,11 @@ pub fn futex<'tcx>(
            if val == futex_val {
                this.block_thread(thread);
                this.futex_wait(futex_ptr, thread);
+                this.write_scalar(Scalar::from_i32(0), dest)?;
            } else {
                let eagain = this.eval_libc("EAGAIN")?;
                this.set_last_error(eagain)?;
+                this.write_scalar(Scalar::from_i32(-1), dest)?;
            }
        }
        op if op == futex_wake => {