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From: Szabolcs Nagy <nsz@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc/arm/morello/main] aarch64: morello: string: dummy c strspn Date: Thu, 27 Oct 2022 13:51:46 +0000 (GMT) [thread overview] Message-ID: <20221027135146.19D063851531@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d8827155646662902e79773fc609b666e0aa63d1 commit d8827155646662902e79773fc609b666e0aa63d1 Author: Szabolcs Nagy <szabolcs.nagy@arm.com> Date: Wed Mar 16 10:58:57 2022 +0000 aarch64: morello: string: dummy c strspn avoids out of bound access of the generic implementation. Diff: --- sysdeps/aarch64/morello/strspn.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/sysdeps/aarch64/morello/strspn.c b/sysdeps/aarch64/morello/strspn.c new file mode 100644 index 0000000000..7ec59aaf15 --- /dev/null +++ b/sysdeps/aarch64/morello/strspn.c @@ -0,0 +1,40 @@ +/* Simple strspn. + + Copyright (C) 2022 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 + <https://www.gnu.org/licenses/>. */ + +#include <string.h> + +size_t strspn (const char *str, const char *accept) +{ + if (accept[0] == 0) + return 0; + if (accept[1] == 0) + { + const char *p; + for (p = str; *p == accept[0]; p++); + return p - str; + } + + unsigned char table[256] = {0}; + unsigned char *us; + for (us = (unsigned char*) accept; *us != 0; table[*us++] = 1); + + for (us = (unsigned char*) str; table[*us] != 0; us++); + return us - (unsigned char *) str; +} +libc_hidden_builtin_def (strspn)
next reply other threads:[~2022-10-27 13:51 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-10-27 13:51 Szabolcs Nagy [this message] -- strict thread matches above, loose matches on Subject: below -- 2022-11-23 14:41 Szabolcs Nagy 2022-10-26 15:13 Szabolcs Nagy 2022-08-05 19:31 Szabolcs Nagy
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