/* Test printf PRI* macro narrowing arguments. Copyright (C) 2025 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see . */ #include #include #include #include #include #define CHECK_PRINTF(EXPECTED, FMT, ...) \ do \ { \ int ret = snprintf (buf, sizeof buf, FMT, \ __VA_ARGS__); \ TEST_COMPARE_STRING (buf, EXPECTED); \ TEST_COMPARE (ret, strlen (EXPECTED)); \ } \ while (0) _Static_assert (INT_FAST8_WIDTH == 8, "width of int_fast8_t"); _Static_assert (UINT_FAST8_WIDTH == 8, "width of uint_fast8_t"); static int do_test (void) { char buf[1024]; CHECK_PRINTF ("-121", "%" PRId8, 1234567); CHECK_PRINTF ("-121", "%" PRIdLEAST8, 1234567); CHECK_PRINTF ("-121", "%" PRIdFAST8, 1234567); CHECK_PRINTF ("-10617", "%" PRId16, 1234567); CHECK_PRINTF ("-10617", "%" PRIdLEAST16, 1234567); CHECK_PRINTF ("-121", "%" PRIi8, 1234567); CHECK_PRINTF ("-121", "%" PRIiLEAST8, 1234567); CHECK_PRINTF ("-121", "%" PRIiFAST8, 1234567); CHECK_PRINTF ("-10617", "%" PRIi16, 1234567); CHECK_PRINTF ("-10617", "%" PRIiLEAST16, 1234567); CHECK_PRINTF ("207", "%" PRIo8, 1234567); CHECK_PRINTF ("207", "%" PRIoLEAST8, 1234567); CHECK_PRINTF ("207", "%" PRIoFAST8, 1234567); CHECK_PRINTF ("153207", "%" PRIo16, 1234567); CHECK_PRINTF ("153207", "%" PRIoLEAST16, 1234567); CHECK_PRINTF ("135", "%" PRIu8, 1234567); CHECK_PRINTF ("135", "%" PRIuLEAST8, 1234567); CHECK_PRINTF ("135", "%" PRIuFAST8, 1234567); CHECK_PRINTF ("54919", "%" PRIu16, 1234567); CHECK_PRINTF ("54919", "%" PRIuLEAST16, 1234567); CHECK_PRINTF ("87", "%" PRIx8, 1234567); CHECK_PRINTF ("87", "%" PRIxLEAST8, 1234567); CHECK_PRINTF ("87", "%" PRIxFAST8, 1234567); CHECK_PRINTF ("d687", "%" PRIx16, 1234567); CHECK_PRINTF ("d687", "%" PRIxLEAST16, 1234567); CHECK_PRINTF ("87", "%" PRIX8, 1234567); CHECK_PRINTF ("87", "%" PRIXLEAST8, 1234567); CHECK_PRINTF ("87", "%" PRIXFAST8, 1234567); CHECK_PRINTF ("D687", "%" PRIX16, 1234567); CHECK_PRINTF ("D687", "%" PRIXLEAST16, 1234567); /* GCC does not know the %b or %B formats before GCC 12. */ DIAG_PUSH_NEEDS_COMMENT; #if !__GNUC_PREREQ (12, 0) DIAG_IGNORE_NEEDS_COMMENT (11, "-Wformat"); DIAG_IGNORE_NEEDS_COMMENT (11, "-Wformat-extra-args"); #endif CHECK_PRINTF ("10000111", "%" PRIb8, 1234567); CHECK_PRINTF ("10000111", "%" PRIbLEAST8, 1234567); CHECK_PRINTF ("10000111", "%" PRIbFAST8, 1234567); CHECK_PRINTF ("1101011010000111", "%" PRIb16, 1234567); CHECK_PRINTF ("1101011010000111", "%" PRIbLEAST16, 1234567); CHECK_PRINTF ("10000111", "%" PRIB8, 1234567); CHECK_PRINTF ("10000111", "%" PRIBLEAST8, 1234567); CHECK_PRINTF ("10000111", "%" PRIBFAST8, 1234567); CHECK_PRINTF ("1101011010000111", "%" PRIB16, 1234567); CHECK_PRINTF ("1101011010000111", "%" PRIBLEAST16, 1234567); DIAG_POP_NEEDS_COMMENT; return 0; } #include