diff options
Diffstat (limited to 'erts/emulator/nifs/win32/win_prim_file.c')
| -rw-r--r-- | erts/emulator/nifs/win32/win_prim_file.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/erts/emulator/nifs/win32/win_prim_file.c b/erts/emulator/nifs/win32/win_prim_file.c index d0aa70542f..e7d3924240 100644 --- a/erts/emulator/nifs/win32/win_prim_file.c +++ b/erts/emulator/nifs/win32/win_prim_file.c @@ -142,12 +142,15 @@ static posix_errno_t get_full_path(ErlNifEnv *env, WCHAR *input, efile_path_t *r maybe_unc_path = !sys_memcmp(result->data, L"\\\\", sizeof(WCHAR) * 2); if(maybe_unc_path && !is_long_path) { - /* \\localhost\c$\gurka -> \\?\UNC\localhost\c$\gurka */ + /* \\localhost\c$\gurka -> \\?\UNC\localhost\c$\gurka + * + * Note that the length is reduced by 2 as the "\\" is replaced by + * the UNC prefix */ sys_memmove(result->data + LP_UNC_PREFIX_SIZE, &((WCHAR*)result->data)[2], - (actual_length - 1) * sizeof(WCHAR)); + (actual_length + 1 - 2) * sizeof(WCHAR)); sys_memcpy(result->data, LP_UNC_PREFIX, LP_UNC_PREFIX_SIZE); - actual_length += LP_UNC_PREFIX_LENGTH; + actual_length += LP_UNC_PREFIX_LENGTH - 2; } else if(!is_long_path) { /* C:\gurka -> \\?\C:\gurka */ sys_memmove(result->data + LP_PREFIX_SIZE, result->data, |