bug#44350: 28.0.50; Emacs aborts when launching Gnus on MacOs

[陈志伟]

In GNU Emacs 28.0.50 (build 1, x86_64-apple-darwin19.6.0, NS appkit-1894.60 Version 10.15.7 (Build 19H2))

 of 2020-10-31 built on Youmu.local

Repository revision: 7f30bf72066514db44cf00b20f807bb360e1b968

Repository branch: master

Windowing system distributor 'Apple', version 10.3.1894

System Description:  Mac OS X 10.15.7

The stacktrace, it looks like a librsvg bug.

* thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGABRT

  * frame #0: 0x00007fff6cc6d33a libsystem_kernel.dylib`__pthread_kill + 10

    frame #1: 0x00007fff6cd29e60 libsystem_pthread.dylib`pthread_kill + 430

    frame #2: 0x00007fff6cbf4808 libsystem_c.dylib`abort + 120

    frame #3: 0x000000010ea56e89 librsvg-2.2.dylib`std::sys::unix::abort_internal::h678855dc4c2872cf + 9

    frame #4: 0x000000010ea6c8a0 librsvg-2.2.dylib`std::sys_common::util::abort::h3a321678d7dec175 + 80

    frame #5: 0x000000010ea34263 librsvg-2.2.dylib`rust_panic + 99

    frame #6: 0x000000010ea340ff librsvg-2.2.dylib`std::panicking::rust_panic_with_hook::h747c3c133ec2d635 + 383

    frame #7: 0x000000010ea33c72 librsvg-2.2.dylib`rust_begin_unwind + 130

    frame #8: 0x000000010eabdb9b librsvg-2.2.dylib`std::panicking::begin_panic_fmt::he8a78d2c3d6ac241 + 59

    frame #9: 0x000000010e77f786 librsvg-2.2.dylib`cairo::context::Context::save::hdd59bf5e9cdc6eee + 134

    frame #10: 0x000000010e5e64d2 librsvg-2.2.dylib`_$LT$rsvg_internals..structure..Svg$u20$as$u20$rsvg_internals..element..Draw$GT$::draw::h1fbeae4cb4094026 + 2546

    frame #11: 0x000000010e5c7bc1 librsvg-2.2.dylib`_$LT$rsvg_internals..element..ElementInner$LT$T$GT$$u20$as$u20$rsvg_internals..element..Draw$GT$::draw::_$u7b$$u7b$closure$u7d$$u7d$::h205fe57f3c282030 + 65

    frame #12: 0x000000010e6d08cc librsvg-2.2.dylib`rsvg_internals::drawing_ctx::DrawingCtx::with_saved_transform::h3c002deb777ea777 + 204

    frame #13: 0x000000010e5ce450 librsvg-2.2.dylib`_$LT$rsvg_internals..element..Element$u20$as$u20$rsvg_internals..element..Draw$GT$::draw::h460591632f2f67d3 + 9904

    frame #14: 0x000000010e687383 librsvg-2.2.dylib`_$LT$rctree..Node$LT$rsvg_internals..node..NodeData$GT$$u20$as$u20$rsvg_internals..node..NodeDraw$GT$::draw::h7903ca2c9a85fb9d + 259

    frame #15: 0x000000010e6d82e4 librsvg-2.2.dylib`rsvg_internals::drawing_ctx::DrawingCtx::draw_node_from_stack::haf30e698e310a278 + 244

    frame #16: 0x000000010e6cb25b librsvg-2.2.dylib`rsvg_internals::drawing_ctx::draw_tree::hb886746764b14e39 + 1211

    frame #17: 0x000000010e69f47c librsvg-2.2.dylib`rsvg_internals::handle::Handle::get_geometry_for_layer::h167c0b807d13a3ce + 668

    frame #18: 0x000000010e579e94 librsvg-2.2.dylib`rsvg_rust_handle_get_geometry_for_layer + 548

    frame #19: 0x000000010d2c8981 Emacs`svg_load_image + 214

    frame #20: 0x000000010d2c44c2 Emacs`lookup_image + 759

    frame #21: 0x000000010d2c412f Emacs`Fimage_size + 59

    frame #22: 0x000000010d262fc6 Emacs`funcall_subr + 292

    frame #23: 0x000000010d26285d Emacs`Ffuncall + 646

    frame #24: 0x000000010d297314 Emacs`exec_byte_code + 1163

    frame #25: 0x000000010d2627fb Emacs`Ffuncall + 548

    frame #26: 0x000000010d297314 Emacs`exec_byte_code + 1163

    frame #27: 0x000000010d2627fb Emacs`Ffuncall + 548

    frame #28: 0x000000010d297314 Emacs`exec_byte_code + 1163

    frame #29: 0x000000010d2627fb Emacs`Ffuncall + 548

    frame #30: 0x000000010d297314 Emacs`exec_byte_code + 1163

    frame #31: 0x000000010d2627fb Emacs`Ffuncall + 548

    frame #32: 0x000000010d25d99d Emacs`Ffuncall_interactively + 73

    frame #33: 0x000000010d26285d Emacs`Ffuncall + 646

    frame #34: 0x000000010d25eafc Emacs`Fcall_interactively + 4426

    frame #35: 0x000000010d262fc6 Emacs`funcall_subr + 292

    frame #36: 0x000000010d26285d Emacs`Ffuncall + 646

    frame #37: 0x000000010d297314 Emacs`exec_byte_code + 1163

    frame #38: 0x000000010d2627fb Emacs`Ffuncall + 548

    frame #39: 0x000000010d262c45 Emacs`call1 + 46

    frame #40: 0x000000010d1f642d Emacs`command_loop_1 + 1426

    frame #41: 0x000000010d2613e7 Emacs`internal_condition_case + 84

    frame #42: 0x000000010d202e36 Emacs`command_loop_2 + 37

    frame #43: 0x000000010d261072 Emacs`internal_catch + 74

    frame #44: 0x000000010d302233 Emacs`recursive_edit_1.cold.1 + 69

    frame #45: 0x000000010d1f58c3 Emacs`recursive_edit_1 + 217

    frame #46: 0x000000010d1f59cd Emacs`Frecursive_edit + 226

    frame #47: 0x000000010d1f4ef7 Emacs`main + 7543

    frame #48: 0x00007fff6cb25cc9 libdyld.dylib`start + 1