Crash on macOS Sequoia 15.7.2 with Japanese text

[dmurdoch]

This causes a segfault:

> library(ragg)
> agg_png("test.png")
> plot(1,1, main = "\u6771\u4eac")
Failed to get face: /System/Library/PrivateFrameworks/FontServices.framework/Resources/Reserved/PingFangUI.ttc, 0
Process 70990 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0xc0)
    frame #0: 0x000000010389032c textshaping.so`hb_ft_face_create(ft_face=0x0000000000000000, destroy=(textshaping.so`_hb_ft_face_destroy(void*) at hb-ft.cc:125:3)) at hb-ft.cc:1137:17 [opt]

This is likely caused by a bug in textshaping (see r-lib/textshaping#77) triggered by the unrecognized font format used on the Mac.

> library(ragg)
> sessionInfo()
R version 4.5.2 (2025-10-31)
Platform: aarch64-apple-darwin20
Running under: macOS Sequoia 15.7.2

Matrix products: default
BLAS:   /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib 
LAPACK: /Library/Frameworks/R.framework/Versions/4.5-arm64/Resources/lib/libRlapack.dylib;  LAPACK version 3.12.1

locale:
[1] en_CA.UTF-8/en_CA.UTF-8/en_CA.UTF-8/C/en_CA.UTF-8/en_CA.UTF-8

time zone: America/Toronto
tzcode source: internal

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] ragg_1.5.0

loaded via a namespace (and not attached):
[1] compiler_4.5.2    cli_3.6.5         textshaping_1.0.4 lifecycle_1.0.5  
[5] rlang_1.1.7       systemfonts_1.3.1

[dmurdoch]

This systemfonts issue is also relevant: r-lib/systemfonts#147 . The font which systemfonts was suggesting is not supposed to be user-visible.

[thomasp85]

Should be fixed with latest systemfonts (submitted to CRAN today)