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charset="UTF-8" X-Mailman-Approved-At: Tue, 07 Jan 2025 03:00:49 -0500 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-guix@gnu.org List-Id: Bug reports for GNU Guix List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guix-bounces+larch=yhetil.org@gnu.org Sender: bug-guix-bounces+larch=yhetil.org@gnu.org X-Migadu-Flow: FLOW_IN X-Migadu-Country: US X-Migadu-Scanner: mx11.migadu.com X-Migadu-Spam-Score: -0.13 X-Spam-Score: -0.13 X-Migadu-Queue-Id: 0B7A697661 X-TUID: Mqs9pNNumVZG Between 2.35 and 2.38, glibc added the following code to sys/mount.h: > #ifdef __has_include > # if __has_include ("linux/mount.h") > # include "linux/mount.h" > # endif > #endif This is then used to conditionally define structures that would be in linux/mount.h, in case linux/mount.h is either unavailable or missing those structures. The __has_include directive was added to GCC in v5.0, and didn't become standard until C++17. Unfortunately, this causes the first #ifdef to fail, and so linux/mount.h is never checked. Any code trying to include both sys/mount.h and linux/mount.h will therefore fail when compiled with GCC < 5.0 and glibc >= 2.38. Possible solutions: * Patch sys/mount.h to make it include linux/mount.h unconditionally on all platforms using the Linux kernel. * Somehow remove linux/mount.h from GCC 4.9's sanitizer_platform_limits_posix.cc. Unfortunately it's an indirect include from linux/fs.h.