diff options
| -rw-r--r-- | library/std/src/os/unix/process.rs | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/library/std/src/os/unix/process.rs b/library/std/src/os/unix/process.rs index 355855bcd10..f014a3d7b25 100644 --- a/library/std/src/os/unix/process.rs +++ b/library/std/src/os/unix/process.rs @@ -75,6 +75,12 @@ pub trait CommandExt: Sealed { /// sure that the closure does not violate library invariants by making /// invalid use of these duplicates. /// + /// Panicking in the closure is safe only if all the format arguments for the + /// panic message can be safely formatted; this is because although + /// `Command` calls [`std::panic::always_abort`](crate::panic::always_abort) + /// before calling the pre_exec hook, panic will still try to format the + /// panic message. + /// /// When this closure is run, aspects such as the stdio file descriptors and /// working directory have successfully been changed, so output to these /// locations may not appear where intended. |