From ed3ec7343b7d104a3285336fbfc1e4719719f9b6 Mon Sep 17 00:00:00 2001 From: Iain Buclaw Date: Sat, 25 Sep 2021 23:03:41 +0200 Subject: [PATCH] libphobos: Print stacktrace before terminating program due to uncaught exception. By default, D run-time has a top level exception handler to catch anything that was uncaught by user code. However when the `rt_trapExceptions' flag is cleared, this handler would not be enabled, and this termination would occur, aborting the program, but without any information about the exception. libphobos/ChangeLog: * libdruntime/gcc/deh.d (_d_print_throwable): Declare. (_d_throw): Print stacktrace before terminating program due to uncaught exception. --- libphobos/libdruntime/gcc/deh.d | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libphobos/libdruntime/gcc/deh.d b/libphobos/libdruntime/gcc/deh.d index eb83751..a7eb37c 100644 --- a/libphobos/libdruntime/gcc/deh.d +++ b/libphobos/libdruntime/gcc/deh.d @@ -34,6 +34,7 @@ extern(C) { int _d_isbaseof(ClassInfo, ClassInfo); void _d_createTrace(Object, void*); + void _d_print_throwable(Throwable t); } /** @@ -510,7 +511,11 @@ extern(C) void _d_throw(Throwable object) // things, almost certainly we will have crashed before now, rather than // actually being able to diagnose the problem. if (r == _URC_END_OF_STACK) + { + __gdc_begin_catch(&eh.unwindHeader); + _d_print_throwable(object); terminate("uncaught exception", __LINE__); + } terminate("unwind error", __LINE__); } -- 2.7.4