Do not attempt to unlock envlock in child process after a fork.

This is a breaking change for cases where the environment is
accessed in a Command::pre_exec closure. Except for
single-threaded programs these uses were not correct
anyway since they aren't async-signal safe.

1 files changed, 0 insertions, 14 deletions

diff --git a/src/test/ui/command/command-pre-exec.rs b/src/test/ui/command/command-pre-exec.rs
index 8fc6a220331..819ed0b2dde 100644
--- a/src/test/ui/command/command-pre-exec.rs
+++ b/src/test/ui/command/command-pre-exec.rs
@@ -45,20 +45,6 @@ fn main() {
 
     let output = unsafe {
         Command::new(&me)
-            .arg("test2")
-            .pre_exec(|| {
-                env::set_var("FOO", "BAR");
-                Ok(())
-            })
-            .output()
-            .unwrap()
-    };
-    assert!(output.status.success());
-    assert!(output.stderr.is_empty());
-    assert!(output.stdout.is_empty());
-
-    let output = unsafe {
-        Command::new(&me)
             .arg("test3")
             .pre_exec(|| {
                 env::set_current_dir("/").unwrap();