mirror of https://github.com/rust-lang/rust.git
49 lines
1.6 KiB
Rust
49 lines
1.6 KiB
Rust
//@ revisions:rpass1 rpass2
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//@ compile-flags: -Z query-dep-graph
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//@ aux-build:cached_hygiene.rs
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// This tests the following scenario
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// 1. A foreign crate is compiled with incremental compilation.
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// This causes hygiene information to be saved to the incr cache.
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// 2. One function is the foreign crate is modified. This causes the
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// optimized mir for an unmodified function to be loaded from the
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//@ incremental cache and written out to the crate metadata.
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// 3. In the process of loading and writing out this function's MIR,
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// we load hygiene information from the incremental cache and
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// write it to our metadata.
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// 4. This hygiene information is loaded by another crate (this file)
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// Previously, this situation would cause hygiene identifiers
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// (SyntaxContexts and ExpnIds) to get corrupted when we tried to
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// serialize the hygiene information loaded from the incr cache into
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// the metadata. Specifically, we were not resetting `orig_id`
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// for an `EpxnData` generate in the current crate, which would cause
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// us to serialize the `ExpnId` pointing to a garbage location in
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// the metadata.
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#![feature(rustc_attrs)]
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#![rustc_partition_reused(module="load_cached_hygiene-call_unchanged_function", cfg="rpass2")]
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#![rustc_partition_codegened(module="load_cached_hygiene-call_changed_function", cfg="rpass2")]
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extern crate cached_hygiene;
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pub mod call_unchanged_function {
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pub fn unchanged() {
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cached_hygiene::unchanged_fn();
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}
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}
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pub mod call_changed_function {
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pub fn changed() {
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cached_hygiene::changed_fn();
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}
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}
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pub fn main() {
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call_unchanged_function::unchanged();
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call_changed_function::changed();
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}
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