diff options
| author | Andy Wingo <wingo@pobox.com> | 2017-03-01 17:34:41 +0100 |
|---|---|---|
| committer | Andy Wingo <wingo@pobox.com> | 2017-03-01 17:34:41 +0100 |
| commit | 82ea7c763b5f6b030583ef354263b33855111160 (patch) | |
| tree | 1aa7980be9b2a3ce62bd11cac9b046fe01214dc4 /libguile | |
| parent | 24eea1be08391475fe932f44df51ebe1aca75a2b (diff) | |
Fix open-file mode misinterpretation
* libguile/fports.c (scm_i_mode_to_open_flags): Validate that argument
is string. Fixes #25498.
Diffstat (limited to 'libguile')
| -rw-r--r-- | libguile/fports.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libguile/fports.c b/libguile/fports.c index f79b4a3a8..94092b872 100644 --- a/libguile/fports.c +++ b/libguile/fports.c @@ -159,6 +159,9 @@ scm_i_mode_to_open_flags (SCM mode, int *is_binary, const char *FUNC_NAME) int flags = 0; const char *md, *ptr; + if (SCM_UNLIKELY (!scm_is_string (mode))) + scm_out_of_range (FUNC_NAME, mode); + if (SCM_UNLIKELY (!scm_i_try_narrow_string (mode))) scm_out_of_range (FUNC_NAME, mode); |