diff options
Diffstat (limited to 'shell/hush.c')
| -rw-r--r-- | shell/hush.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/shell/hush.c b/shell/hush.c index cbec2dd71..5daca960c 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -2646,7 +2646,9 @@ static int setup_redirects(struct command *prog, int squirrel[]) for (redir = prog->redirects; redir; redir = redir->next) { if (redir->rd_type == REDIRECT_HEREDOC2) { /* rd_fd<<HERE case */ - if (squirrel && redir->rd_fd < 3) { + if (squirrel && redir->rd_fd < 3 + && squirrel[redir->rd_fd] < 0 + ) { squirrel[redir->rd_fd] = dup(redir->rd_fd); } /* for REDIRECT_HEREDOC2, rd_filename holds _contents_ @@ -2682,7 +2684,9 @@ static int setup_redirects(struct command *prog, int squirrel[]) } if (openfd != redir->rd_fd) { - if (squirrel && redir->rd_fd < 3) { + if (squirrel && redir->rd_fd < 3 + && squirrel[redir->rd_fd] < 0 + ) { squirrel[redir->rd_fd] = dup(redir->rd_fd); } if (openfd == REDIRFD_CLOSE) { |