Fix compilation errors on platforms that don't support alloc::sync::Arc #16
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While the crate compiles without warnings, |
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alloc::sync::Arcis only available on platforms that support atomic loads and stores of pointers. Some targets don't have this (e.g. thumbv6, RP2040) and flexstr fails to compile.This PR gates
SharedStrbehind#[cfg(target_has_atomic = "ptr")]as recommended by the documentation forArc.