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author | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2022-03-16 10:59:17 +0000 |
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committer | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2022-11-22 14:31:25 +0000 |
commit | 69711df0c6db274385e123d8ede8d8e755c6798a (patch) | |
tree | 851a9430e485842a30f5a996ad9d9525173c5216 /sysdeps | |
parent | c7f259679aed1eac4732b01279e04a301d5160df (diff) | |
download | glibc-69711df0c6db274385e123d8ede8d8e755c6798a.tar.gz glibc-69711df0c6db274385e123d8ede8d8e755c6798a.tar.xz glibc-69711df0c6db274385e123d8ede8d8e755c6798a.zip |
aarch64: morello: string: dummy c strcspn
avoids out of bounds access of the generic implementation.
Diffstat (limited to 'sysdeps')
-rw-r--r-- | sysdeps/aarch64/morello/strcspn.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/sysdeps/aarch64/morello/strcspn.c b/sysdeps/aarch64/morello/strcspn.c new file mode 100644 index 0000000000..82c33cdcbf --- /dev/null +++ b/sysdeps/aarch64/morello/strcspn.c @@ -0,0 +1,35 @@ +/* Simple strcspn. + + 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 strcspn (const char *str, const char *reject) +{ + if (reject[0] == 0 || reject[1] == 0) + return __strchrnul (str, reject[0]) - str; + + unsigned char table[256] = {0}; + unsigned char *us; + for (us = (unsigned char*) reject; *us != 0; table[*us++] = 1); + table[*us] = 1; + + for (us = (unsigned char*) str; table[*us] == 0; us++); + return us - (unsigned char *) str; +} +libc_hidden_builtin_def (strcspn) |