mirror of git://sourceware.org/git/glibc.git
108 lines
3.9 KiB
C
108 lines
3.9 KiB
C
/* Test <string.h> const-generic macros.
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Copyright (C) 2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <string.h>
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#include <libc-diag.h>
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void *vp;
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const void *cvp;
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int *ip;
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const int *cip;
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char *cp;
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const char *ccp;
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int c;
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size_t sz;
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#define CHECK_TYPE(EXPR, TYPE) \
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_Static_assert (_Generic (EXPR, TYPE: 1), "type check")
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static int
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do_test (void)
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{
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/* This is a compilation test. */
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CHECK_TYPE (memchr (vp, c, sz), void *);
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CHECK_TYPE (memchr (cvp, c, sz), const void *);
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CHECK_TYPE (memchr (ip, c, sz), void *);
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CHECK_TYPE (memchr (cip, c, sz), const void *);
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CHECK_TYPE (memchr (cp, c, sz), void *);
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CHECK_TYPE (memchr (ccp, c, sz), const void *);
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DIAG_PUSH_NEEDS_COMMENT;
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/* This deliberately tests the type of the result with a null
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pointer constant argument. */
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DIAG_IGNORE_NEEDS_COMMENT (14, "-Wnonnull");
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CHECK_TYPE (memchr (0, c, sz), void *);
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CHECK_TYPE (memchr ((void *) 0, c, sz), void *);
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DIAG_POP_NEEDS_COMMENT;
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CHECK_TYPE ((memchr) (cvp, c, sz), void *);
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CHECK_TYPE (strchr (vp, c), char *);
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CHECK_TYPE (strchr (cvp, c), const char *);
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CHECK_TYPE (strchr (cp, c), char *);
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CHECK_TYPE (strchr (ccp, c), const char *);
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DIAG_PUSH_NEEDS_COMMENT;
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DIAG_IGNORE_NEEDS_COMMENT (14, "-Wnonnull");
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CHECK_TYPE (strchr (0, c), char *);
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CHECK_TYPE (strchr ((void *) 0, c), char *);
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DIAG_POP_NEEDS_COMMENT;
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CHECK_TYPE ((strchr) (ccp, c), char *);
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CHECK_TYPE (strpbrk (vp, vp), char *);
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CHECK_TYPE (strpbrk (vp, cvp), char *);
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CHECK_TYPE (strpbrk (cvp, vp), const char *);
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CHECK_TYPE (strpbrk (cvp, cvp), const char *);
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CHECK_TYPE (strpbrk (cp, cp), char *);
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CHECK_TYPE (strpbrk (cp, ccp), char *);
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CHECK_TYPE (strpbrk (ccp, cp), const char *);
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CHECK_TYPE (strpbrk (ccp, ccp), const char *);
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DIAG_PUSH_NEEDS_COMMENT;
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DIAG_IGNORE_NEEDS_COMMENT (14, "-Wnonnull");
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CHECK_TYPE (strpbrk (0, cp), char *);
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CHECK_TYPE (strpbrk (0, ccp), char *);
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CHECK_TYPE (strpbrk ((void *) 0, cp), char *);
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CHECK_TYPE (strpbrk ((void *) 0, ccp), char *);
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DIAG_POP_NEEDS_COMMENT;
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CHECK_TYPE ((strpbrk) (ccp, ccp), char *);
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CHECK_TYPE (strrchr (vp, c), char *);
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CHECK_TYPE (strrchr (cvp, c), const char *);
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CHECK_TYPE (strrchr (cp, c), char *);
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CHECK_TYPE (strrchr (ccp, c), const char *);
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DIAG_PUSH_NEEDS_COMMENT;
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DIAG_IGNORE_NEEDS_COMMENT (14, "-Wnonnull");
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CHECK_TYPE (strrchr (0, c), char *);
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CHECK_TYPE (strrchr ((void *) 0, c), char *);
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DIAG_POP_NEEDS_COMMENT;
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CHECK_TYPE ((strrchr) (ccp, c), char *);
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CHECK_TYPE (strstr (vp, vp), char *);
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CHECK_TYPE (strstr (vp, cvp), char *);
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CHECK_TYPE (strstr (cvp, vp), const char *);
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CHECK_TYPE (strstr (cvp, cvp), const char *);
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CHECK_TYPE (strstr (cp, cp), char *);
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CHECK_TYPE (strstr (cp, ccp), char *);
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CHECK_TYPE (strstr (ccp, cp), const char *);
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CHECK_TYPE (strstr (ccp, ccp), const char *);
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DIAG_PUSH_NEEDS_COMMENT;
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DIAG_IGNORE_NEEDS_COMMENT (14, "-Wnonnull");
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CHECK_TYPE (strstr (0, cp), char *);
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CHECK_TYPE (strstr (0, ccp), char *);
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CHECK_TYPE (strstr ((void *) 0, cp), char *);
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CHECK_TYPE (strstr ((void *) 0, ccp), char *);
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DIAG_POP_NEEDS_COMMENT;
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CHECK_TYPE ((strstr) (ccp, ccp), char *);
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return 0;
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}
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#include <support/test-driver.c>
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