[swift-dev] Stack dump of the compiler?

rintaro ishizaki fs.output at gmail.com
Tue Oct 25 22:51:50 CDT 2016

Hi all,
I've noticed recent build of swift compiler doesn't show the stack dump on

Here is the result with October 25, 2016 snapshot.

On macOS, the dump completely doesn't show up.
On Linux, the dump shows up, but without symbols.

As for Linux, I figured out that it's because of recent change in
cmake_minimum_required(VERSION 3.4.3)
Specifically, the policy change of CMP0065
backtrace_symbols_fd() needs symbols exported.

As for macOS, I'm not sure why.

I don't know what is the right way to fix this.
cmake_policy(SET CMP0065 OLD)
would fix the Linux build but ...

Any thought?
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