hush: make "exit" in trap use pre-trap exitcode - fix for nested trap
function old new delta
check_and_run_traps 276 278 +2
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/shell/ash_test/ash-misc/exitcode_trap6.right b/shell/ash_test/ash-misc/exitcode_trap6.right
new file mode 100644
index 0000000..b76c190
--- /dev/null
+++ b/shell/ash_test/ash-misc/exitcode_trap6.right
@@ -0,0 +1,2 @@
+INT
+42:42
diff --git a/shell/ash_test/ash-misc/exitcode_trap6.tests b/shell/ash_test/ash-misc/exitcode_trap6.tests
new file mode 100755
index 0000000..15fb99d
--- /dev/null
+++ b/shell/ash_test/ash-misc/exitcode_trap6.tests
@@ -0,0 +1,11 @@
+# "exit" in trap should not use last command's exitcode,
+# but exitcode on entering the trap.
+# Nested trap should not interfere with this.
+$THIS_SH -c '
+ trap "echo INT" int
+ trap "kill -int $$;exit" term
+ kill $$ &
+ (exit 42)
+ wait
+'
+echo 42:$?
diff --git a/shell/hush.c b/shell/hush.c
index b881b00..357a354 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -2107,16 +2107,18 @@
if (G_traps[sig][0]) {
/* We have user-defined handler */
smalluint save_rcode;
+ int save_pre;
char *argv[3];
/* argv[0] is unused */
argv[1] = xstrdup(G_traps[sig]);
/* why strdup? trap can modify itself: trap 'trap "echo oops" INT' INT */
argv[2] = NULL;
+ save_pre = G.pre_trap_exitcode;
G.pre_trap_exitcode = save_rcode = G.last_exitcode;
builtin_eval(argv);
free(argv[1]);
+ G.pre_trap_exitcode = save_pre;
G.last_exitcode = save_rcode;
- G.pre_trap_exitcode = -1;
# if ENABLE_HUSH_FUNCTIONS
if (G.return_exitcode >= 0) {
debug_printf_exec("trap exitcode:%d\n", G.return_exitcode);
diff --git a/shell/hush_test/hush-misc/exitcode_trap6.right b/shell/hush_test/hush-misc/exitcode_trap6.right
new file mode 100644
index 0000000..b76c190
--- /dev/null
+++ b/shell/hush_test/hush-misc/exitcode_trap6.right
@@ -0,0 +1,2 @@
+INT
+42:42
diff --git a/shell/hush_test/hush-misc/exitcode_trap6.tests b/shell/hush_test/hush-misc/exitcode_trap6.tests
new file mode 100755
index 0000000..15fb99d
--- /dev/null
+++ b/shell/hush_test/hush-misc/exitcode_trap6.tests
@@ -0,0 +1,11 @@
+# "exit" in trap should not use last command's exitcode,
+# but exitcode on entering the trap.
+# Nested trap should not interfere with this.
+$THIS_SH -c '
+ trap "echo INT" int
+ trap "kill -int $$;exit" term
+ kill $$ &
+ (exit 42)
+ wait
+'
+echo 42:$?
