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-rw-r--r--erts/emulator/beam/erl_unicode.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_unicode.c b/erts/emulator/beam/erl_unicode.c
index 3434ce3979..72207df621 100644
--- a/erts/emulator/beam/erl_unicode.c
+++ b/erts/emulator/beam/erl_unicode.c
@@ -2429,6 +2429,13 @@ BIF_RETTYPE prim_file_internal_name2native_1(BIF_ALIST_1)
Sint need;
Eterm bin_term;
byte* bin_p;
+ /* Prim file explicitly does not allow atoms, although we could
+ very well cope with it. Instead of letting 'file' handle them,
+ it would probably be more efficient to handle them here. Subject to
+ change in R15. */
+ if (is_atom(BIF_ARG_1)) {
+ BIF_ERROR(BIF_P,BADARG);
+ }
if (is_binary(BIF_ARG_1)) {
byte *temp_alloc = NULL;
byte *bytes;