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Diffstat (limited to 'src/os/exec/exec.go')
| -rw-r--r-- | src/os/exec/exec.go | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/os/exec/exec.go b/src/os/exec/exec.go index 8101e718ff..f0dc7dab7d 100644 --- a/src/os/exec/exec.go +++ b/src/os/exec/exec.go @@ -465,6 +465,9 @@ func lookExtensions(path, dir string) (string, error) { // The Wait method will return the exit code and release associated resources // once the command exits. func (c *Cmd) Start() error { + if c.Path == "" && c.Err == nil && c.lookPathErr == nil { + c.Err = errors.New("exec: no command") + } if c.Err != nil || c.lookPathErr != nil { c.closeDescriptors(c.closeAfterStart) c.closeDescriptors(c.closeAfterWait) |