Merge pull request #4170 from yutannihilation/chore/fix-unsafe-attribute-rust2024

chore: Wrap `link_section` attribute in example code with `unsafe()` for compatibility with Rust 2024 edition

examples/boot/application/stm32wl/src/bin/a.rs

@@ -20,7 +20,7 @@ static APP_B: &[u8] = &[0, 1, 2, 3];
 #[cfg(not(feature = "skip-include"))]
 static APP_B: &[u8] = include_bytes!("../../b.bin");
 
-#[link_section = ".shared_data"]
+#[unsafe(link_section = ".shared_data")]
 static SHARED_DATA: MaybeUninit<SharedData> = MaybeUninit::uninit();
 
 #[embassy_executor::main]

examples/boot/application/stm32wl/src/bin/b.rs

@@ -11,7 +11,7 @@ use embassy_stm32::SharedData;
 use embassy_time::Timer;
 use panic_reset as _;
 
-#[link_section = ".shared_data"]
+#[unsafe(link_section = ".shared_data")]
 static SHARED_DATA: MaybeUninit<SharedData> = MaybeUninit::uninit();
 
 #[embassy_executor::main]

examples/mimxrt6/build.rs

@@ -25,7 +25,7 @@ fn main() {
         .write_all(
             format!(
                 r##"
-#[link_section = ".biv"]
+#[unsafe(link_section = ".biv")]
 #[used]
 static BOOT_IMAGE_VERSION: u32 = 0x{:02x}{:02x}{:02x}00;
 "##,

examples/mimxrt6/src/lib.rs

@@ -6,15 +6,15 @@ use {defmt_rtt as _, panic_probe as _};
 // auto-generated version information from Cargo.toml
 include!(concat!(env!("OUT_DIR"), "/biv.rs"));
 
-#[link_section = ".otfad"]
+#[unsafe(link_section = ".otfad")]
 #[used]
 static OTFAD: [u8; 256] = [0; 256];
 
 #[rustfmt::skip]
-#[link_section = ".fcb"]
+#[unsafe(link_section = ".fcb")]
 #[used]
 static FCB: FlexSPIFlashConfigurationBlock = FlexSPIFlashConfigurationBlock::build();
 
-#[link_section = ".keystore"]
+#[unsafe(link_section = ".keystore")]
 #[used]
 static KEYSTORE: [u8; 2048] = [0; 2048];

examples/rp235x/src/bin/blinky.rs

@@ -14,7 +14,7 @@ use {defmt_rtt as _, panic_probe as _};
 
 // Program metadata for `picotool info`.
 // This isn't needed, but it's recomended to have these minimal entries.
-#[link_section = ".bi_entries"]
+#[unsafe(link_section = ".bi_entries")]
 #[used]
 pub static PICOTOOL_ENTRIES: [embassy_rp::binary_info::EntryAddr; 4] = [
     embassy_rp::binary_info::rp_program_name!(c"Blinky Example"),

examples/rp235x/src/bin/blinky_wifi.rs

@@ -18,7 +18,7 @@ use {defmt_rtt as _, panic_probe as _};
 
 // Program metadata for `picotool info`.
 // This isn't needed, but it's recommended to have these minimal entries.
-#[link_section = ".bi_entries"]
+#[unsafe(link_section = ".bi_entries")]
 #[used]
 pub static PICOTOOL_ENTRIES: [embassy_rp::binary_info::EntryAddr; 4] = [
     embassy_rp::binary_info::rp_program_name!(c"Blinky Example"),

examples/rp235x/src/bin/blinky_wifi_pico_plus_2.rs

@@ -18,7 +18,7 @@ use {defmt_rtt as _, panic_probe as _};
 
 // Program metadata for `picotool info`.
 // This isn't needed, but it's recomended to have these minimal entries.
-#[link_section = ".bi_entries"]
+#[unsafe(link_section = ".bi_entries")]
 #[used]
 pub static PICOTOOL_ENTRIES: [embassy_rp::binary_info::EntryAddr; 4] = [
     embassy_rp::binary_info::rp_program_name!(c"Blinky Example"),

examples/rp235x/src/bin/pio_rotary_encoder_rxf.rs

@@ -16,7 +16,7 @@ use pio::{Common, Config, FifoJoin, Instance, InterruptHandler, Pio, PioPin, Shi
 use {defmt_rtt as _, panic_probe as _};
 
 // Program metadata for `picotool info`
-#[link_section = ".bi_entries"]
+#[unsafe(link_section = ".bi_entries")]
 #[used]
 pub static PICOTOOL_ENTRIES: [embassy_rp::binary_info::EntryAddr; 4] = [
     embassy_rp::binary_info::rp_program_name!(c"example_pio_rotary_encoder_rxf"),

examples/stm32h7/src/bin/adc_dma.rs

@@ -8,7 +8,7 @@ use embassy_stm32::Config;
 use embassy_time::Timer;
 use {defmt_rtt as _, panic_probe as _};
 
-#[link_section = ".ram_d3"]
+#[unsafe(link_section = ".ram_d3")]
 static mut DMA_BUF: [u16; 2] = [0; 2];
 
 #[embassy_executor::main]

examples/stm32h7/src/bin/sai.rs

@@ -16,9 +16,9 @@ const DMA_BUFFER_LENGTH: usize = HALF_DMA_BUFFER_LENGTH * 2; //  2 half-blocks
 const SAMPLE_RATE: u32 = 48000;
 
 //DMA buffer must be in special region. Refer https://embassy.dev/book/#_stm32_bdma_only_working_out_of_some_ram_regions
-#[link_section = ".sram1_bss"]
+#[unsafe(link_section = ".sram1_bss")]
 static mut TX_BUFFER: GroundedArrayCell<u32, DMA_BUFFER_LENGTH> = GroundedArrayCell::uninit();
-#[link_section = ".sram1_bss"]
+#[unsafe(link_section = ".sram1_bss")]
 static mut RX_BUFFER: GroundedArrayCell<u32, DMA_BUFFER_LENGTH> = GroundedArrayCell::uninit();
 
 #[embassy_executor::main]

examples/stm32h7/src/bin/spi_bdma.rs

@@ -16,7 +16,7 @@ use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
 // Defined in memory.x
-#[link_section = ".ram_d3"]
+#[unsafe(link_section = ".ram_d3")]
 static mut RAM_D3: GroundedArrayCell<u8, 256> = GroundedArrayCell::uninit();
 
 #[embassy_executor::task]

examples/stm32h723/src/bin/spdifrx.rs

@@ -24,10 +24,10 @@ const HALF_DMA_BUFFER_LENGTH: usize = BLOCK_LENGTH * CHANNEL_COUNT;
 const DMA_BUFFER_LENGTH: usize = HALF_DMA_BUFFER_LENGTH * 2; //  2 half-blocks
 
 // DMA buffers must be in special regions. Refer https://embassy.dev/book/#_stm32_bdma_only_working_out_of_some_ram_regions
-#[link_section = ".sram1"]
+#[unsafe(link_section = ".sram1")]
 static mut SPDIFRX_BUFFER: GroundedArrayCell<u32, DMA_BUFFER_LENGTH> = GroundedArrayCell::uninit();
 
-#[link_section = ".sram4"]
+#[unsafe(link_section = ".sram4")]
 static mut SAI_BUFFER: GroundedArrayCell<u32, DMA_BUFFER_LENGTH> = GroundedArrayCell::uninit();
 
 #[embassy_executor::main]

examples/stm32h755cm4/src/bin/blinky.rs

@@ -10,7 +10,7 @@ use embassy_stm32::SharedData;
 use embassy_time::Timer;
 use {defmt_rtt as _, panic_probe as _};
 
-#[link_section = ".ram_d3.shared_data"]
+#[unsafe(link_section = ".ram_d3.shared_data")]
 static SHARED_DATA: MaybeUninit<SharedData> = MaybeUninit::uninit();
 
 #[embassy_executor::main]

examples/stm32h755cm7/src/bin/blinky.rs

@@ -10,7 +10,7 @@ use embassy_stm32::SharedData;
 use embassy_time::Timer;
 use {defmt_rtt as _, panic_probe as _};
 
-#[link_section = ".ram_d3.shared_data"]
+#[unsafe(link_section = ".ram_d3.shared_data")]
 static SHARED_DATA: MaybeUninit<SharedData> = MaybeUninit::uninit();
 
 #[embassy_executor::main]

examples/stm32wl/src/bin/blinky.rs

@@ -10,7 +10,7 @@ use embassy_stm32::SharedData;
 use embassy_time::Timer;
 use {defmt_rtt as _, panic_probe as _};
 
-#[link_section = ".shared_data"]
+#[unsafe(link_section = ".shared_data")]
 static SHARED_DATA: MaybeUninit<SharedData> = MaybeUninit::uninit();
 
 #[embassy_executor::main]

examples/stm32wl/src/bin/button.rs

@@ -9,7 +9,7 @@ use embassy_stm32::gpio::{Input, Level, Output, Pull, Speed};
 use embassy_stm32::SharedData;
 use {defmt_rtt as _, panic_probe as _};
 
-#[link_section = ".shared_data"]
+#[unsafe(link_section = ".shared_data")]
 static SHARED_DATA: MaybeUninit<SharedData> = MaybeUninit::uninit();
 
 #[entry]

examples/stm32wl/src/bin/button_exti.rs

@@ -10,7 +10,7 @@ use embassy_stm32::gpio::Pull;
 use embassy_stm32::SharedData;
 use {defmt_rtt as _, panic_probe as _};
 
-#[link_section = ".shared_data"]
+#[unsafe(link_section = ".shared_data")]
 static SHARED_DATA: MaybeUninit<SharedData> = MaybeUninit::uninit();
 
 #[embassy_executor::main]

examples/stm32wl/src/bin/flash.rs

@@ -9,7 +9,7 @@ use embassy_stm32::flash::Flash;
 use embassy_stm32::SharedData;
 use {defmt_rtt as _, panic_probe as _};
 
-#[link_section = ".shared_data"]
+#[unsafe(link_section = ".shared_data")]
 static SHARED_DATA: MaybeUninit<SharedData> = MaybeUninit::uninit();
 
 #[embassy_executor::main]

examples/stm32wl/src/bin/random.rs

@@ -14,7 +14,7 @@ bind_interrupts!(struct Irqs{
     RNG => rng::InterruptHandler<peripherals::RNG>;
 });
 
-#[link_section = ".shared_data"]
+#[unsafe(link_section = ".shared_data")]
 static SHARED_DATA: MaybeUninit<SharedData> = MaybeUninit::uninit();
 
 #[embassy_executor::main]

examples/stm32wl/src/bin/rtc.rs

@@ -12,7 +12,7 @@ use embassy_stm32::{Config, SharedData};
 use embassy_time::Timer;
 use {defmt_rtt as _, panic_probe as _};
 
-#[link_section = ".shared_data"]
+#[unsafe(link_section = ".shared_data")]
 static SHARED_DATA: MaybeUninit<SharedData> = MaybeUninit::uninit();
 
 #[embassy_executor::main]

examples/stm32wl/src/bin/uart_async.rs

@@ -14,7 +14,7 @@ bind_interrupts!(struct Irqs{
     LPUART1 => InterruptHandler<peripherals::LPUART1>;
 });
 
-#[link_section = ".shared_data"]
+#[unsafe(link_section = ".shared_data")]
 static SHARED_DATA: MaybeUninit<SharedData> = MaybeUninit::uninit();
 
 /*