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Don't export __wasm_init_memory on WebAssembly. #102426

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Sep 29, 2022
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Don't export __wasm_init_memory on WebAssembly. #102426

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6 changes: 0 additions & 6 deletions compiler/rustc_codegen_ssa/src/back/linker.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1180,18 +1180,12 @@ impl<'a> WasmLd<'a> {
// sharing memory and instantiating the module multiple times. As a
// result if it were exported then we'd just have no sharing.
//
// * `--export=__wasm_init_memory` - when using `--passive-segments` the
// linker will synthesize this function, and so we need to make sure
// that our usage of `--export` below won't accidentally cause this
// function to get deleted.
//
// * `--export=*tls*` - when `#[thread_local]` symbols are used these
// symbols are how the TLS segments are initialized and configured.
if sess.target_features.contains(&sym::atomics) {
cmd.arg("--shared-memory");
cmd.arg("--max-memory=1073741824");
cmd.arg("--import-memory");
cmd.arg("--export=__wasm_init_memory");
cmd.arg("--export=__wasm_init_tls");
cmd.arg("--export=__tls_size");
cmd.arg("--export=__tls_align");
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