id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
16681	firefox-91.0esr ftbfs with cbindgen >= 0.24.2.	ken@…	ken@…	"This was a bear to find - the error was very early,

{{{
 0:47.88 /scratch/working/firefox-91.10.0/firefox-build-dir/dist/include/mozilla/webrender/webrender_ffi_generated.h:24:33: error: redefinition of 'constexpr const uint64_t mozilla::wr::ROOT_CLIP_CHAIN'
 0:47.88    24 | constexpr static const uint64_t ROOT_CLIP_CHAIN = ~0;
 0:47.88       |                                 ^~~~~~~~~~~~~~~
}}}

but the build continued to
{{{
 10:12.90    Compiling gkrust v0.1.0 (/scratch/working/firefox-91.10.0/toolkit/library/rust)
14:05.14     Finished release [optimized] target(s) in 13m 35s
14:05.14 warning: the following packages contain code that will be rejected by a future version of Rust: cascade_bloom_filter v0.1.0 (/scratch/working/firefox-91.10.0/toolkit/components/cascade_bloom_filter), cert_storage v0.0.1 (/scratch/working/firefox-91.10.0/security/manager/ssl/cert_storage), rental v0.5.6
14:05.15 note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
14:05.30 make[2]: *** [/scratch/working/firefox-91.10.0/config/recurse.mk:34: compile] Error 2
}}}

This appears to be https://bugzilla.mozilla.org/show_bug.cgi?id=1773336
for which the recommended fix for 91esr is from comment 10:
""Just remove the constant from webrender_ffi.h, or use an older cbindgen? Trunk builds with the newer cbindgen already.""

i.e. already fixed in firefox 101.0 and later.

Not yet tested, and maybe also applies to thunderbird. Looks as if
{{{
sed -i '/ROOT_CLIP_CHAIN/d' gfx/webrender_bindings/webrender_ffi.h
}}}
should fix it. Will find out tomorrow. If it works, I'll label it as ""apply a fix for cbindgen-0.24.2 and later"". 
 
"	defect	closed	normal	11.2	BOOK	git	medium	fixed