diff options
| -rw-r--r-- | shell/hush.c | 11 | ||||
| -rw-r--r-- | shell/hush_test/hush-vars/readonly2.right | 1 | ||||
| -rwxr-xr-x | shell/hush_test/hush-vars/readonly2.tests | 1 |
3 files changed, 13 insertions, 0 deletions
diff --git a/shell/hush.c b/shell/hush.c index 55e581e..f6da826 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -2287,7 +2287,18 @@ static struct variable *set_vars_and_save_old(char **strings) if (var_pp) { var_p = *var_pp; if (var_p->flg_read_only) { + char **p; bb_error_msg("%s: readonly variable", *s); + /* + * "VAR=V BLTIN" unsets VARs after BLTIN completes. + * If VAR is readonly, leaving it in the list + * after asssignment error (msg above) + * causes doubled error message later, on unset. + */ + debug_printf_env("removing/freeing '%s' element\n", *s); + free(*s); + p = s; + do { *p = p[1]; p++; } while (*p); goto next; } /* Remove variable from global linked list */ diff --git a/shell/hush_test/hush-vars/readonly2.right b/shell/hush_test/hush-vars/readonly2.right index 5b02ddf..38551d4 100644 --- a/shell/hush_test/hush-vars/readonly2.right +++ b/shell/hush_test/hush-vars/readonly2.right @@ -1,4 +1,5 @@ hush: a=Z: readonly variable Visible:42 + hush: a=Z: readonly variable Visible:42 diff --git a/shell/hush_test/hush-vars/readonly2.tests b/shell/hush_test/hush-vars/readonly2.tests index d9d178e..b758d96 100755 --- a/shell/hush_test/hush-vars/readonly2.tests +++ b/shell/hush_test/hush-vars/readonly2.tests @@ -3,4 +3,5 @@ readonly a=A # external commands and builtins should behave the same: (exit 42); a=Z echo "Visible:$?" +echo (exit 42); a=Z env echo "Visible:$?" |