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Add support for forced custom implementation #269

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Add support for forced custom implementation #269

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2 changes: 2 additions & 0 deletions Cargo.toml
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Expand Up @@ -38,6 +38,8 @@ rdrand = []
js = ["wasm-bindgen", "js-sys"]
# Feature to enable custom RNG implementations
custom = []
# Feature to force usage of custom RNG implementation
force-custom = []
# Unstable feature to support being a libstd dependency
rustc-dep-of-std = [
"compiler_builtins",
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6 changes: 4 additions & 2 deletions src/lib.rs
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Expand Up @@ -162,7 +162,7 @@ mod error;
mod util;
// To prevent a breaking change when targets are added, we always export the
// register_custom_getrandom macro, so old Custom RNG crates continue to build.
#[cfg(feature = "custom")]
#[cfg(any(feature = "custom", feature = "force-custom"))]
mod custom;
#[cfg(feature = "std")]
mod error_impls;
Expand All @@ -173,7 +173,9 @@ pub use crate::error::Error;
//
// These should all provide getrandom_inner with the same signature as getrandom.
cfg_if! {
if #[cfg(any(target_os = "emscripten", target_os = "haiku",
if #[cfg(feature = "force-custom")] {
use custom as imp;
} else if #[cfg(any(target_os = "emscripten", target_os = "haiku",
target_os = "redox"))] {
mod util_libc;
#[path = "use_file.rs"] mod imp;
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