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

[Zihao Zhu]

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 <all_but_last@163.com>
> > 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)?

gdb.txt
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