diff options
| -rw-r--r-- | src/liballoc/collections/vec_deque.rs | 2 | ||||
| -rw-r--r-- | src/librustc_target/spec/msp430_none_elf.rs | 9 |
2 files changed, 9 insertions, 2 deletions
diff --git a/src/liballoc/collections/vec_deque.rs b/src/liballoc/collections/vec_deque.rs index 571f35a2031..88e76033f27 100644 --- a/src/liballoc/collections/vec_deque.rs +++ b/src/liballoc/collections/vec_deque.rs @@ -36,6 +36,8 @@ use vec::Vec; const INITIAL_CAPACITY: usize = 7; // 2^3 - 1 const MINIMUM_CAPACITY: usize = 1; // 2 - 1 +#[cfg(target_pointer_width = "16")] +const MAXIMUM_ZST_CAPACITY: usize = 1 << (16 - 1); // Largest possible power of two #[cfg(target_pointer_width = "32")] const MAXIMUM_ZST_CAPACITY: usize = 1 << (32 - 1); // Largest possible power of two #[cfg(target_pointer_width = "64")] diff --git a/src/librustc_target/spec/msp430_none_elf.rs b/src/librustc_target/spec/msp430_none_elf.rs index 0958a958986..d9ab2384491 100644 --- a/src/librustc_target/spec/msp430_none_elf.rs +++ b/src/librustc_target/spec/msp430_none_elf.rs @@ -35,9 +35,14 @@ pub fn target() -> TargetResult { no_integrated_as: true, // There are no atomic CAS instructions available in the MSP430 - // instruction set - max_atomic_width: Some(16), + // instruction set, and the LLVM backend doesn't currently support + // compiler fences so the Atomic* API is missing on this target. + // When the LLVM backend gains support for compile fences uncomment + // the `singlethread: true` line and set `max_atomic_width` to + // `Some(16)`. + max_atomic_width: Some(0), atomic_cas: false, + // singlethread: true, // Because these devices have very little resources having an // unwinder is too onerous so we default to "abort" because the |