Mercurial > gnulib
view tests/test-rawmemchr.c @ 40190:ef116535bf1a
relocatable-prog: Use $ORIGIN trick on more platforms.
* m4/relocatable.m4 (gl_RELOCATABLE_BODY): Use $ORIGIN trick also on
FreeBSD >= 7.3, DragonFly >= 3.0, NetBSD >= 8.0, OpenBSD >= 5.4,
Solaris >= 10, Haiku. But don't use it on Android.
* build-aux/reloc-ldflags: Allow the use of the $ORIGIN trick also on
Hurd, FreeBSD, DragonFly, NetBSD, OpenBSD, Solaris, Haiku.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Wed, 20 Feb 2019 02:39:52 +0100 |
parents | b06060465f09 |
children |
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/* * Copyright (C) 2008-2019 Free Software Foundation, Inc. * Written by Eric Blake and Bruno Haible * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <https://www.gnu.org/licenses/>. */ #include <config.h> #include <string.h> #include "signature.h" SIGNATURE_CHECK (rawmemchr, void *, (void const *, int)); #include <stdlib.h> #include "zerosize-ptr.h" #include "macros.h" /* Calculating void * + int is not portable, so this wrapper converts to char * to make the tests easier to write. */ #define RAWMEMCHR (char *) rawmemchr int main (void) { size_t n = 0x100000; char *input = malloc (n + 1); ASSERT (input); input[0] = 'a'; input[1] = 'b'; memset (input + 2, 'c', 1024); memset (input + 1026, 'd', n - 1028); input[n - 2] = 'e'; input[n - 1] = 'a'; input[n] = '\0'; /* Basic behavior tests. */ ASSERT (RAWMEMCHR (input, 'a') == input); ASSERT (RAWMEMCHR (input, 'b') == input + 1); ASSERT (RAWMEMCHR (input, 'c') == input + 2); ASSERT (RAWMEMCHR (input, 'd') == input + 1026); ASSERT (RAWMEMCHR (input + 1, 'a') == input + n - 1); ASSERT (RAWMEMCHR (input + 1, 'e') == input + n - 2); ASSERT (RAWMEMCHR (input + 1, 0x789abc00 | 'e') == input + n - 2); ASSERT (RAWMEMCHR (input, '\0') == input + n); /* Alignment tests. */ { int i, j; for (i = 0; i < 32; i++) { for (j = 0; j < 256; j++) input[i + j] = j; for (j = 0; j < 256; j++) { ASSERT (RAWMEMCHR (input + i, j) == input + i + j); } } } /* Ensure that no unaligned oversized reads occur. */ { char *page_boundary = (char *) zerosize_ptr (); size_t i; if (!page_boundary) page_boundary = input + 4096; memset (page_boundary - 512, '1', 511); page_boundary[-1] = '2'; for (i = 1; i <= 512; i++) ASSERT (RAWMEMCHR (page_boundary - i, (i * 0x01010100) | '2') == page_boundary - 1); } free (input); return 0; }