src/lib/libproc/crc32.c, branch main FreeBSD source tree https://cgit-dev.freebsd.org/src/atom?h=main 2022-07-10T23:31:35Z libproc: replace home grown crc32 with zlib implementation. 2022-07-10T23:31:35Z Xin LI delphij@FreeBSD.org 2022-07-10T23:31:35Z urn:sha1:0bbf2702963a2fe6f7bb025d5d07ee4195856b8f MFC after: 2 weeks Reviewed by: markj Differential Revision: https://reviews.freebsd.org/D35766 libproc: Improve .gnu_debuglink support. 2016-12-06T04:18:09Z Mark Johnston markj@FreeBSD.org 2016-12-06T04:18:09Z urn:sha1:76c6531c6549d171f3e4de9eed29aec18ac08b4b As of r278658 libproc looks for debug files under /usr/lib/debug and will use them if available. This change fleshes out that support a bit further: - Check for a .gnu_debuglink section and use the file name specified there if one is present. - Validate external debug files with the CRC in the .gnu_debuglink section so as to avoid using stale or corrupt debug files. - Search for debug files in the directory containing the referencing object or in the .debug subdirectory, as GDB does.