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- Add sigsegv stacktrace in test and regular errors for Darwin Arm64. #1105

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This commit is contained in:
Christoffer Lerno
2025-11-20 20:36:33 +01:00
committed by Christoffer Lerno
parent a50de26c5d
commit 5b83108dd1
5 changed files with 131 additions and 38 deletions
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31
lib/std/core/builtin.c3
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@@ -135,11 +135,14 @@ macro bool @typeis(#value, $Type) @const @builtin @deprecated("Use `$typeof(#val
}
fn bool print_backtrace(String message, int backtraces_to_ignore) @if (env::NATIVE_STACKTRACE) => @stack_mem(0x1100; Allocator smem)
fn bool print_backtrace(String message, int backtraces_to_ignore, void *added_backtrace = null) @if (env::NATIVE_STACKTRACE) => @stack_mem(0x1100; Allocator smem)
{
void*[256] buffer;
void*[] backtraces = backtrace::capture_current(&buffer);
backtraces_to_ignore++;
if (added_backtrace)
{
backtraces[++backtraces_to_ignore] = added_backtrace;
}
@stack_mem(2048; Allocator mem)
{
BacktraceList? backtrace = backtrace::symbolize_backtrace(mem, backtraces);
@@ -941,23 +944,20 @@ macro void* get_returnaddress(int n)
}
module std::core::builtin @if((env::LINUX || env::ANDROID || env::DARWIN) && env::COMPILER_SAFE_MODE && env::DEBUG_SYMBOLS);
import libc, std::io;
import libc, std::io, std::os::posix;
fn void sig_panic(String message)
{
default_panic(message, "???", "???", 0);
}
SignalFunction old_bus_error;
SignalFunction old_segmentation_fault;
fn void sig_bus_error(CInt i)
fn void sig_bus_error(CInt i, void* info, void* context)
{
$if !env::NATIVE_STACKTRACE:
sig_panic("Illegal memory access.");
$else
$if $defined(io::stderr):
if (!print_backtrace("Illegal memory access.", 1))
if (!print_backtrace("Illegal memory access.", 2, posix::stack_instruction(context)))
{
io::eprintn("\nERROR: 'Illegal memory access'.");
}
@@ -966,13 +966,13 @@ fn void sig_bus_error(CInt i)
$$trap();
}
fn void sig_segmentation_fault(CInt i)
fn void sig_segmentation_fault(CInt i, void* p1, void* context)
{
$if !env::NATIVE_STACKTRACE:
sig_panic("Out of bounds memory access.");
$else
$if $defined(io::stderr):
if (!print_backtrace("Out of bounds memory access.", 1))
if (!print_backtrace("Out of bounds memory access.", 2, posix::stack_instruction(context)))
{
io::eprintn("\nERROR: Memory error without backtrace, possible stack overflow.");
}
@@ -981,17 +981,12 @@ fn void sig_segmentation_fault(CInt i)
$$trap();
}
fn void install_signal_handler(CInt signal, SignalFunction func) @local
{
SignalFunction old = libc::signal(signal, func);
// Restore
if ((iptr)old > 1024) libc::signal(signal, old);
}
// Clean this up
fn void install_signal_handlers() @init(101) @local @if(env::BACKTRACE)
{
install_signal_handler(libc::SIGBUS, &sig_bus_error);
install_signal_handler(libc::SIGSEGV, &sig_segmentation_fault);
posix::install_signal_handler(libc::SIGBUS, &sig_bus_error);
posix::install_signal_handler(libc::SIGSEGV, &sig_segmentation_fault);
}