Merge remote-tracking branch 'upstream/stable' into merge_stable

[MartinNowak]

Conflicts:
src/dmd/backend/cgobj.d
src/dmd/typesem.d

[dlang-bot]

Thanks for your pull request, @MartinNowak!

Bugzilla references

Auto-close	Bugzilla	Severity	Description
✓	17828	normal	[ICE] Internal error: ddmd/backend/cgcs.c 352 - CTFE appending to an array on a struct from a template
✓	17885	critical	Unable to remove a tuple from associative array.
✓	19295	regression	ICE when taking address of member function passed as template parameter
✓	19708	normal	Can't use __traits(getAttributes, ...)[...] as a type
✓	20011	regression	[REG] modification of member of a manifest constant that's also a struct is allowed
✓	20022	regression	POSIX: extern(C++, namespace) does not apply namespace to enum
✓	20025	normal	alias this combined with a copy constructor seems to lead to undefined behaviour.
✓	20035	critical	[ICE] Segmentation fault in ExpressionPrettyPrintVisitor::visit(IntegerExp*) at dmd/hdrgen.d:1775
✓	20039	normal	ICE from double template instantiation with getMember of overload of class and template function
✓	20042	major	__vector CTFE crashes the compiler
✓	20044	critical	Compiler crash when using an opaque struct as template parameter
✓	20045	normal	bogus error: "integer constant expression expected instead of (uint).sizeof"
✓	20052	critical	SIMD 32 bytes causes obscure segfault

Testing this PR locally

If you don't have a local development environment setup, you can use Digger to test this PR:

dub fetch digger
dub run digger -- build "master + dmd#10254"

[rainers]

@MartinNowak Sebastian already did the fixups: #10232 One commit missing, though.

[Geod24]

#10232 has been merged