Michael Dusan comments

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                                            Michael Dusan

llvm backend ignores `@ptrCast` on comptime-known values

this seems to work (not crashing) on master `0.12.0-dev.1297+a9e66ed73`. I did update: `test.zig` and tried on both linux and macos: ```zig const std = @import("std"); extern "c" fn do_the_thing(*anyopaque, *anyopaque,...

zig cc helloworld.c -o helloworld_zig_cc_trunk failed to create a binary on linux-x86_64

does your env show any results for: ```sh env | grep pwd ```

Feature: Add CACHEDIR.TAG to zig-cache

> Do you have examples of tools that use `CACHEDIR.TAG`? this is the first I've heard of it. from gnutar docs: ``` --exclude-caches exclude contents of directories containing CACHEDIR.TAG, except...

zig cc: parse `-target` and `-mcpu`/`-march`/`-mtune` flags according to clang

If we advertise as "drop in replacement" then I would side with parse-as-clang-does with one exception. We are permitted to add zig variants of options where it makes sense: -...

`zig cc` fails to compile simple programs on macOS Catalina and Big Sur

issue resolved: it was caused by an errant `CPATH` environment variable

CPU features are not passed to clang when assembling

found this stalled patch from '2014, though we'd need a few more passthru-args enabled: https://reviews.llvm.org/D6170

Bit-packed struct with undefined default has inconsistent access

> having undefined in a packed struct would propagate to the entire struct If that's the expected/desired behaviour with: ```zig const std = @import("std"); pub const Foo = packed struct(u2)...

"error: Unexpected" when zig-cache is present, compiles otherwise.

are you sync'ing folder(s) to iCloud?

"error: Unexpected" when zig-cache is present, compiles otherwise.

zig's caching logic makes extensive use of filesystem features wrt locking, moving/renaming, and it seems sync'd folders behave differently under such pressing conditions. As an aside, I once tried sharing...

Panic: reached unreachable code under aarch64 Ampere A1 cpu (Oracle Linux 8)

if it doesn't crash, can you paste output of `zig detect-cpu`