Implement printing of stack traces on LLVM segfaults and aborts
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@ -1312,10 +1312,55 @@ pub fn init_env_logger(env: &str) {
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tracing::subscriber::set_global_default(subscriber).unwrap();
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tracing::subscriber::set_global_default(subscriber).unwrap();
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}
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}
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extern "C" {
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// Only available in glibc
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fn backtrace_symbols_fd(buffer: *const *mut libc::c_void, size: libc::c_int, fd: libc::c_int);
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}
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#[cfg(unix)]
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fn print_stack_trace(_: libc::c_int) {
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unsafe {
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static mut STACK_TRACE: [*mut libc::c_void; 256] = [std::ptr::null_mut(); 256];
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let depth = libc::backtrace(STACK_TRACE.as_mut_ptr(), 256);
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if depth == 0 {
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return;
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}
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backtrace_symbols_fd(STACK_TRACE.as_ptr(), depth, 2);
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}
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}
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#[cfg(unix)]
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// When an error signal (such as SIGABRT or SIGSEGV) is delivered to the
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// process, print a stack trace and then exit.
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fn print_stack_trace_on_error_signal() {
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unsafe {
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const ALT_STACK_SIZE: usize = libc::MINSIGSTKSZ + 64 * 1024;
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let mut alt_stack: libc::stack_t = std::mem::zeroed();
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alt_stack.ss_sp =
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std::alloc::alloc(std::alloc::Layout::from_size_align_unchecked(ALT_STACK_SIZE, 1))
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as *mut libc::c_void;
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alt_stack.ss_size = ALT_STACK_SIZE;
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libc::sigaltstack(&mut alt_stack, std::ptr::null_mut());
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let mut sa: libc::sigaction = std::mem::zeroed();
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sa.sa_sigaction =
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print_stack_trace as fn(libc::c_int) as *mut libc::c_void as libc::sighandler_t;
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sa.sa_flags = libc::SA_NODEFER | libc::SA_RESETHAND | libc::SA_ONSTACK;
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libc::sigemptyset(&mut sa.sa_mask);
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libc::sigaction(libc::SIGSEGV, &sa, std::ptr::null_mut());
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}
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}
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#[cfg(windows)]
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// When an error signal (such as SIGABRT or SIGSEGV) is delivered to the
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// process, print a stack trace and then exit.
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fn print_stack_trace_on_error_signal() {}
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pub fn main() -> ! {
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pub fn main() -> ! {
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let start_time = Instant::now();
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let start_time = Instant::now();
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let start_rss = get_resident_set_size();
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let start_rss = get_resident_set_size();
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init_rustc_env_logger();
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init_rustc_env_logger();
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print_stack_trace_on_error_signal();
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let mut callbacks = TimePassesCallbacks::default();
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let mut callbacks = TimePassesCallbacks::default();
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install_ice_hook();
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install_ice_hook();
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let exit_code = catch_with_exit_code(|| {
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let exit_code = catch_with_exit_code(|| {
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