Subject: bug#41627: 28.0.50; Emacs with cairo build segfault in HELLO file

From: Zihao Zhu <[email-masked]>
Date: Sun, 31 May 2020 23:38:28 +0800

A gdb attached backtrace generated by Emacs build with CFLAGS=-O0 -g3 in 
attachment

On 2020/5/31 下午10:54, Eli Zaretskii wrote:
>> From: Zihao Zhu <[email-masked]>
>> Date: Sun, 31 May 2020 19:32:18 +0800
>>
>> I try the Emacs build in commit
>> 780f674a82a90c4e3e32583059b498bfa57e4a06. When I eval
>>
>> (set-frame-font "Sarasa Mono Slab SC" t)
>>
>> then run M-x view-hello-file. Emacs segfault.
>>
>> Sarasa Gothic: https://github.com/be5invis/Sarasa-Gothic
>>
>> GDB attached backtrace in attachment.
> Thanks.  can you show a backtrace from an unoptimized build (assuming
> it also crashes in this case)?