Robert Clausecker
253f15c016
The original scalar implementation of strrchr() had incorrect logic that failed if the character searched for was the NUL character. It was also possibly affected by the issue fixed in3d8ef251afor strchrnul(). Rewrite the function with logic that actually works. We defer checking for the character until after we have checked for NUL. When we encounter the final NUL byte, we mask out the characters beyond the tail before checking for a match. This bug only affects users running on amd64 with ARCHLEVEL=scalar (cf. simd(7)). The default configuration is not affected. The bug was unfortunately not caught by the unit test inherited from NetBSD. An extended unit test catching the issue is proposed in D56037. PR: 293915 Reported by: safonov.paul@gmail.com Tested by: safonov.paul@gmail.com Fixes:2ed514a220See also: https://reviews.freebsd.org/D56037 MFC after: 1 week
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| Directory | Description |
|---|---|
| bin | System/user commands. |
| cddl | Various commands and libraries under the Common Development and Distribution License. |
| contrib | Packages contributed by 3rd parties. |
| crypto | Cryptography stuff (see crypto/README). |
| etc | Template files for /etc. |
| gnu | Commands and libraries under the GNU General Public License (GPL) or Lesser General Public License (LGPL). Please see gnu/COPYING and gnu/COPYING.LIB for more information. |
| include | System include files. |
| kerberos5 | Kerberos5 (Heimdal) package. |
| lib | System libraries. |
| libexec | System daemons. |
| release | Release building Makefile & associated tools. |
| rescue | Build system for statically linked /rescue utilities. |
| sbin | System commands. |
| secure | Cryptographic libraries and commands. |
| share | Shared resources. |
| stand | Boot loader sources. |
| sys | Kernel sources (see sys/README.md). |
| targets | Support for experimental DIRDEPS_BUILD |
| tests | Regression tests which can be run by Kyua. See tests/README for additional information. |
| tools | Utilities for regression testing and miscellaneous tasks. |
| usr.bin | User commands. |
| usr.sbin | System administration commands. |
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