git: d4f495fbf88f - main - i386: Add static asssert for context size
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Date: Thu, 10 Feb 2022 21:33:59 UTC
The branch main has been updated by imp: URL: https://cgit.FreeBSD.org/src/commit/?id=d4f495fbf88fbc0391b221ce2315a820ad31236d commit d4f495fbf88fbc0391b221ce2315a820ad31236d Author: Warner Losh <imp@FreeBSD.org> AuthorDate: 2022-02-10 21:26:53 +0000 Commit: Warner Losh <imp@FreeBSD.org> CommitDate: 2022-02-10 21:32:20 +0000 i386: Add static asssert for context size Add a static assert for the siginfo_t, mcontext_t and ucontext_t sizes. These are de-facto ABI options and cannot change size ever. Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D34211 --- sys/i386/i386/exec_machdep.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sys/i386/i386/exec_machdep.c b/sys/i386/i386/exec_machdep.c index 01602e43733f..0463615d96d9 100644 --- a/sys/i386/i386/exec_machdep.c +++ b/sys/i386/i386/exec_machdep.c @@ -115,6 +115,10 @@ static void freebsd4_sendsig(sig_t catcher, ksiginfo_t *, sigset_t *mask); extern struct sysentvec elf32_freebsd_sysvec; +_Static_assert(sizeof(mcontext_t) == 640, "mcontext_t size incorrect"); +_Static_assert(sizeof(ucontext_t) == 704, "ucontext_t size incorrect"); +_Static_assert(sizeof(siginfo_t) == 64, "siginfo_t size incorrect"); + /* * Send an interrupt to process. *