From 33fd73fedeb5cd61dbbb7562fd927c0b6994653a Mon Sep 17 00:00:00 2001 From: Patrick Mooney Date: Mon, 4 Apr 2022 17:55:30 +0000 Subject: Update libc to 0.2.121 With the updated libc, UNIX stack overflow handling in libstd can now use the common `si_addr` accessor function, rather than attempting to use a field from that name in `siginfo_t`. This simplifies the collection of the fault address, particularly on platforms where that data resides within a union in `siginfo_t`. --- library/std/src/sys/unix/stack_overflow.rs | 18 +----------------- 1 file changed, 1 insertion(+), 17 deletions(-) (limited to 'library/std/src/sys/unix/stack_overflow.rs') diff --git a/library/std/src/sys/unix/stack_overflow.rs b/library/std/src/sys/unix/stack_overflow.rs index 1e8d1137ac8..75a5c0f9279 100644 --- a/library/std/src/sys/unix/stack_overflow.rs +++ b/library/std/src/sys/unix/stack_overflow.rs @@ -54,22 +54,6 @@ mod imp { use crate::sys::unix::os::page_size; use crate::sys_common::thread_info; - #[cfg(any(target_os = "linux", target_os = "android"))] - unsafe fn siginfo_si_addr(info: *mut libc::siginfo_t) -> usize { - #[repr(C)] - struct siginfo_t { - a: [libc::c_int; 3], // si_signo, si_errno, si_code - si_addr: *mut libc::c_void, - } - - (*(info as *const siginfo_t)).si_addr as usize - } - - #[cfg(not(any(target_os = "linux", target_os = "android")))] - unsafe fn siginfo_si_addr(info: *mut libc::siginfo_t) -> usize { - (*info).si_addr as usize - } - // Signal handler for the SIGSEGV and SIGBUS handlers. We've got guard pages // (unmapped pages) at the end of every thread's stack, so if a thread ends // up running into the guard page it'll trigger this handler. We want to @@ -97,7 +81,7 @@ mod imp { _data: *mut libc::c_void, ) { let guard = thread_info::stack_guard().unwrap_or(0..0); - let addr = siginfo_si_addr(info); + let addr = (*info).si_addr() as usize; // If the faulting address is within the guard page, then we print a // message saying so and abort. -- cgit v1.2.1