fix Issue 22067 - importC: cast-expression accepted as lvalue in assignment-expression

[ibuclaw]

Without having to go though the D semantic and modify each place where there's deviation from C, just check that each kind of expression is a valid lvalue in C11 if used in one of the contexts where an lvalue is required during CParse. This only deals with op codes, the Expression semantic pass can deal with more complex errors later - such as wrong type or assigning to const.

[dlang-bot]

Thanks for your pull request, @ibuclaw!

Bugzilla references

Auto-close	Bugzilla	Severity	Description
✓	22067	critical	importC: cast-expression accepted as lvalue in assignment-expression

Testing this PR locally

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

dub run digger -- build "master + dmd#12736"

[ibuclaw]

Re-added closing brace in test, result of bad rebase.