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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.
This commit is contained in:
Iain Buclaw 2021-09-25 23:03:41 +02:00
parent 0111153234
commit ed3ec7343b
1 changed files with 5 additions and 0 deletions
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5
libphobos/libdruntime/gcc/deh.d
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@ -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__);
}