Making the enum type share the scope with the parent union means every
declaration "bleeds" into the enum scope.
Let's mint a fresh empty scope for the enum type.
Thanks to @Vexu for the test case.
Closes#7532
Don't use the instantiation argument types to build the function
parameter array.
f416535768fc30195cad6cd481f73fd1e80082aa worked around the problem, this
commit solves it.
Don't cut any corner and properly run the type trough every single step
even though it has no fields (or, better, the sum of the size of all its
fields is zero).
Fix the logic to consider an explicit non-zero-sized tag enough to treat
the type as sized.
Closes#7451
ZigTypeIdOptional types have a different way of specifying their payload
value depending on whether the child type is a pointer or not (plus some
other special cases).
Fixes#7251
Make gen_const_ptr_struct_recursive aware of the possible presence of
some trailing padding by always bitcasting the pointer to its expected
type.
Not an elegant solution but makes LLVM happy and is consistent with how
the other callsites are handling this case.
Fixes#5398
Make the code used to calculate the variable slot index into the frame
match what's done during the structure layout calculation.
Prevents a few nasty LLVM errors when such types are passed around.
The mismatch between the argument slot type in the frame structure and
the one used in the store operation made the generated code write
garbage over the nearby fields.
Fixes#7104
The code tried to be too smart and skipped the equality (returning true)
if the payload type was zero-sized.
This optimization is completely wrong when the union payload is a
metatype!
Fixes#7047
Comparisons with absolute epsilons are usually useful when comparing
numbers to zero, for non-zero numbers it's advised to switch to relative
epsilons instead to obtain meaningful results (check [1] for more
details).
The new API introduces approxEqAbs and approxEqRel, where the former
aliases and deprecated the old `approxEq`, allowing the user to pick the
right tool for the job.
The documentation is meant to guide the user in the choice of the
correct alternative.
[1] https://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/
