Zig 0.17.0 master

[mattnite]

No description provided.

[github-actions]

⚠️ Unused Imports Found

drivers/src/base/BlockMemory.zig:3:0: logger is unused
drivers/src/display/hd44780.zig:15:0: FunctionSet is unused
drivers/src/display/sh1106.zig:11:0: std is unused
drivers/src/io_expander/pca9685.zig:3:0: Digital_IO is unused
drivers/src/sensor/HTS221.zig:12:0: assert is unused
drivers/src/sensor/MPU_6050.zig:24:0: std is unused
drivers/src/wireless/cyw43/cyw43.zig:4:0: std is unused
drivers/src/wireless/cyw43/wifi.zig:22:0: IOCTL_SET_VAR is unused
drivers/src/wireless/cyw43439.zig:2:0: mem is unused
drivers/src/wireless/cyw43439/wifi.zig:5:0: assert is unused
examples/raspberrypi/rp2xxx/src/spi_master.zig:7:0: BUF_LEN is unused
port/nordic/nrf5x/src/hal/drivers.zig:5:0: std is unused
port/nordic/nrf5x/src/hal/drivers.zig:14:0: Stream_Device is unused
port/nxp/mcx/src/mcxn947/scripts/generate.zig:2:0: core is unused
port/raspberrypi/rp2xxx/src/hal/cyw43.zig:1:0: std is unused
port/raspberrypi/rp2xxx/src/hal/cyw43_pio_spi.zig:3:0: std is unused
port/raspberrypi/rp2xxx/src/hal/cyw43_pio_spi.zig:9:0: chip is unused
port/raspberrypi/rp2xxx/src/hal/drivers.zig:14:0: Stream_Device is unused
port/raspberrypi/rp2xxx/src/hal/pio/assembler.zig:2:0: assert is unused
port/raspberrypi/rp2xxx/src/hal/pio/assembler.zig:4:0: microzig is unused
port/raspberrypi/rp2xxx/src/hal/pio/assembler/comparison_tests.zig:3:0: tokenizer is unused
port/stmicro/stm32/src/hals/STM32F103/drivers.zig:8:0: Stream_Device is unused
port/stmicro/stm32/src/hals/STM32F103/drivers.zig:1:0: std is unused
port/stmicro/stm32/src/hals/STM32F103/drivers.zig:9:0: Digital_IO is unused
port/stmicro/stm32/src/hals/STM32F103/uart.zig:12:0: drivers is unused
port/stmicro/stm32/src/hals/STM32F103/uart.zig:16:0: peripherals is unused
port/stmicro/stm32/src/hals/STM32F103/usb_internals/usb_ll.zig:13:0: ep_test is unused
port/stmicro/stm32/src/hals/common/i2c_v2.zig:7:0: peripherals is unused
port/wch/ch32v/src/hals/drivers.zig:17:0: Stream_Device is unused
port/wch/ch32v/src/hals/drivers.zig:5:0: std is unused
port/wch/ch32v/src/hals/spi.zig:37:0: gpio is unused
port/wch/ch32v/src/hals/spi.zig:32:0: std is unused
tools/printer/src/main.zig:2:0: builtin is unused
tools/printer/tests/generate_test_data.zig:7:0: test_data_writer_buf is unused
tools/regz/src/xml.zig:4:0: Allocator is unused

Run zigimports --fix <file> locally to automatically remove unused imports.

[mattnite]

@Grazfather This is ready to be looked at. Once this PR lands and the master binary is available, this PR should pass CI

[tact1m4n3]

Can you clarify what the TODO means? Also, I have an Io.Writer implemented for this. If you want I can commit it.

[mattnite]

This TODO is stale. There's a separate std.Io instance for the debug system, passed in through options:

https://codeberg.org/ziglang/zig/src/commit/0c41edf4978cc45b59909fce69885e310360cbfa/lib/std/debug.zig#L664

There are two boundaries we could choose for implementing the logger. The first is setting a logging function, which we've always done, and the second is to implement a std.Io for the standard library debug system.

I'm leaning towards implementing a logging function, similar to how you mentioned we should have our own stack iterator. I have a feeling that implementing a std.Io will have some unintended side effects like binary size. I've cut a ticket for research so we can have an informed answer, to be done sometime after 0.17.0 lands:

#956

[tact1m4n3]

After a quick skim of std.debug, at least on freestanding, the standard panic just traps. Imho, we should keep a custom panic with also a custom StackIterator that doesn't depend on io. SelfInfo might not make sense for embedded as there isn't any debug info available on the device.