Don't use posix_spawn() if PATH was modified in the environment.

The expected behavior is that the environment's PATH should be used
to find the process.  posix_spawn() could be used if we iterated
PATH to search for the binary to execute.  For now just skip
posix_spawn() if PATH is modified.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/libstd/sys/unix/process/process_unix.rs b/src/libstd/sys/unix/process/process_unix.rs
index 29e33ee822e..9d6d607e3f3 100644
--- a/src/libstd/sys/unix/process/process_unix.rs
+++ b/src/libstd/sys/unix/process/process_unix.rs
@@ -256,6 +256,7 @@ impl Command {
         if self.get_cwd().is_some() ||
             self.get_gid().is_some() ||
             self.get_uid().is_some() ||
+            self.env_saw_path() ||
             self.get_closures().len() != 0 {
             return Ok(None)
         }