* [committed] libphobos: Print stacktrace before terminating program due to uncaught exception.
@ 2021-09-30 16:43 Iain Buclaw
0 siblings, 0 replies; only message in thread
From: Iain Buclaw @ 2021-09-30 16:43 UTC (permalink / raw)
To: gcc-patches
Hi,
This patch adds adjusts the `throw' entrypoint to print the stacktrace
of an uncaught exception before terminating.
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.
Bootstrapped and regression tested on x86_64-linux-gnu/-m32/-mx32, and
committed to mainline.
Regards
Iain
---
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 eb83751c59d..a7eb37cfd9e 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__);
}
--
2.30.2
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