+ fmt_mod = FMT_MOD_h;
+ }
+ break;
+
+ case 'l':
+ fmt = *(++c);
+ if (fmt == 'l') {
+ fmt = *(++c);
+ fmt_mod = FMT_MOD_ll;
+ } else {
+ fmt_mod = FMT_MOD_l;
+ }
+ break;
+
+ case 'L': fmt = *(++c); fmt_mod = FMT_MOD_L; break;
+ case 'j': fmt = *(++c); fmt_mod = FMT_MOD_j; break;
+ case 't': fmt = *(++c); fmt_mod = FMT_MOD_t; break;
+ case 'z': fmt = *(++c); fmt_mod = FMT_MOD_z; break;
+ /* microsoft mode */
+ case 'w':
+ if (c_mode & _MS) {
+ fmt = *(++c);
+ fmt_mod = FMT_MOD_w;
+ }
+ break;
+ case 'I':
+ if (c_mode & _MS) {
+ fmt = *(++c);
+ fmt_mod = FMT_MOD_I;
+ if (fmt == '3') {
+ fmt = *(++c);
+ if (fmt == '2') {
+ fmt = *(++c);
+ fmt_mod = FMT_MOD_I32;
+ } else {
+ /* rewind */
+ fmt = *(--c);
+ }
+ } else if (fmt == '6') {
+ fmt = *(++c);
+ if (fmt == '4') {
+ fmt = *(++c);
+ fmt_mod = FMT_MOD_I64;
+ } else {
+ /* rewind */
+ fmt = *(--c);
+ }
+ }
+ }
+ break;
+ }
+
+ if (fmt == '\0') {
+ warningf(WARN_FORMAT, pos, "dangling %% with conversion specififer in format string");
+ break;
+ }
+
+ type_t *expected_type;
+ switch (fmt) {
+ case 'd':
+ case 'i':
+ switch (fmt_mod) {
+ case FMT_MOD_NONE: expected_type = type_int; break;
+ case FMT_MOD_hh: expected_type = type_signed_char; break;
+ case FMT_MOD_h: expected_type = type_short; break;
+ case FMT_MOD_l: expected_type = type_long; break;
+ case FMT_MOD_ll: expected_type = type_long_long; break;
+ case FMT_MOD_j: expected_type = type_intmax_t; break;
+ case FMT_MOD_z: expected_type = type_ssize_t; break;
+ case FMT_MOD_t: expected_type = type_ptrdiff_t; break;
+ case FMT_MOD_I: expected_type = type_ptrdiff_t; break;
+ case FMT_MOD_I32: expected_type = type_int32; break;
+ case FMT_MOD_I64: expected_type = type_int64; break;
+
+ default:
+ warn_invalid_length_modifier(pos, fmt_mod, fmt);
+ goto next_arg;
+ }
+ break;
+
+ case 'o':
+ case 'X':
+ case 'x':
+ case 'u':
+ switch (fmt_mod) {
+ case FMT_MOD_NONE: expected_type = type_unsigned_int; break;
+ case FMT_MOD_hh: expected_type = type_unsigned_char; break;
+ case FMT_MOD_h: expected_type = type_unsigned_short; break;
+ case FMT_MOD_l: expected_type = type_unsigned_long; break;
+ case FMT_MOD_ll: expected_type = type_unsigned_long_long; break;
+ case FMT_MOD_j: expected_type = type_uintmax_t; break;
+ case FMT_MOD_z: expected_type = type_size_t; break;
+ case FMT_MOD_t: expected_type = type_uptrdiff_t; break;
+ case FMT_MOD_I: expected_type = type_size_t; break;
+ case FMT_MOD_I32: expected_type = type_unsigned_int32; break;
+ case FMT_MOD_I64: expected_type = type_unsigned_int64; break;
+
+ default:
+ warn_invalid_length_modifier(pos, fmt_mod, fmt);
+ goto next_arg;
+ }
+ break;
+
+ case 'A':
+ case 'a':
+ case 'E':
+ case 'e':
+ case 'F':
+ case 'f':
+ case 'G':
+ case 'g':
+ switch (fmt_mod) {
+ case FMT_MOD_l: expected_type = type_double; break;
+ case FMT_MOD_NONE: expected_type = type_float; break;
+ case FMT_MOD_L: expected_type = type_long_double; break;
+
+ default:
+ warn_invalid_length_modifier(pos, fmt_mod, fmt);
+ goto next_arg;
+ }
+ break;
+
+ case 'C':
+ if (fmt_mod != FMT_MOD_NONE) {
+ warn_invalid_length_modifier(pos, fmt_mod, fmt);
+ goto next_arg;
+ }
+ expected_type = type_wchar_t;
+ goto check_c_width;
+
+ case 'c': {
+ switch (fmt_mod) {
+ case FMT_MOD_NONE: expected_type = type_char; break;
+ case FMT_MOD_l: expected_type = type_wchar_t; break;
+ case FMT_MOD_w: expected_type = type_wchar_t; break;
+
+ default:
+ warn_invalid_length_modifier(pos, fmt_mod, fmt);
+ goto next_arg;
+ }
+
+check_c_width:
+ if (width == 0)
+ width = 1;
+ if (!suppress_assignment && arg != NULL) {
+ type_t *const type = skip_typeref(revert_automatic_type_conversion(arg->expression));
+ if (is_type_array(type) &&
+ type->array.size_constant &&
+ width > type->array.size) {
+ warningf(WARN_FORMAT, pos, "target buffer '%T' is too small for %u characters at format %u", type, width, num_fmt);
+ }
+ }
+ break;
+ }
+
+ case 'S':
+ if (fmt_mod != FMT_MOD_NONE) {
+ warn_invalid_length_modifier(pos, fmt_mod, fmt);
+ goto next_arg;
+ }
+ expected_type = type_wchar_t;
+ break;
+
+ case 's':
+ case '[': {
+ switch (fmt_mod) {
+ case FMT_MOD_NONE: expected_type = type_char; break;
+ case FMT_MOD_l: expected_type = type_wchar_t; break;
+ case FMT_MOD_w: expected_type = type_wchar_t; break;
+
+ default:
+ warn_invalid_length_modifier(pos, fmt_mod, fmt);