diff options
Diffstat (limited to 'Src/exec.c')
| -rw-r--r-- | Src/exec.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/Src/exec.c b/Src/exec.c index 1ecbc3967..fa148756b 100644 --- a/Src/exec.c +++ b/Src/exec.c @@ -1885,7 +1885,14 @@ checkclobberparam(struct redir *f) return 0; } - if (!isset(CLOBBER) && (fd = (int)getintvalue(v)) && + /* + * We can't clobber the value in the parameter if it's + * already an opened file descriptor --- that means it's a decimal + * integer corresponding to an opened file descriptor, + * not merely an expression that evaluates to a file descriptor. + */ + if (!isset(CLOBBER) && (s = getstrvalue(v)) && + (fd = (int)zstrtol(s, &s, 10)) >= 0 && !*s && fd <= max_zsh_fd && fdtable[fd] == FDT_EXTERNAL) { zwarn("can't clobber parameter %s containing file descriptor %d", f->varid, fd); |