hush: fix mishandling of "true | f() { echo QWE; }"

function                                             old     new   delta
run_pipe                                            1820    1826      +6

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/shell/hush.c b/shell/hush.c
index b64993faa..94e429c0d 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -7705,6 +7705,15 @@ static void pseudo_exec(nommu_save_t *nommu_save,
                 struct command *command,
                 char **argv_expanded)
 {
+#if ENABLE_HUSH_FUNCTIONS
+        if (command->cmd_type == CMD_FUNCDEF) {
+                /* Ignore funcdefs in pipes:
+                 * true | f() { cmd }
+                 */
+                _exit(0);
+        }
+#endif
+
         if (command->argv) {
                 pseudo_exec_argv(nommu_save, command->argv,
                                 command->assignment_cnt, argv_expanded);