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incr.comp.: Sort exported symbols list in order to achieve stable incr. comp. hash.

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This commit is contained in:
Michael Woerister 2017-11-07 15:15:45 +01:00
parent 102eaa5c10
commit faad4ea3b7
1 changed files with 12 additions and 1 deletions
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13
src/librustc_trans/back/symbol_export.rs
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@ -125,6 +125,12 @@ pub fn provide_local(providers: &mut Providers) {
None,
SymbolExportLevel::Rust));
}
// Sort so we get a stable incr. comp. hash.
local_crate.sort_unstable_by(|&(ref name1, ..), &(ref name2, ..)| {
name1.cmp(name2)
});
Arc::new(local_crate)
};
}
@ -148,7 +154,7 @@ pub fn provide_extern(providers: &mut Providers) {
let special_runtime_crate =
tcx.is_panic_runtime(cnum) || tcx.is_compiler_builtins(cnum);
let crate_exports = tcx
let mut crate_exports: Vec<_> = tcx
.exported_symbol_ids(cnum)
.iter()
.map(|&def_id| {
@ -176,6 +182,11 @@ pub fn provide_extern(providers: &mut Providers) {
})
.collect();
// Sort so we get a stable incr. comp. hash.
crate_exports.sort_unstable_by(|&(ref name1, ..), &(ref name2, ..)| {
name1.cmp(name2)
});
Arc::new(crate_exports)
};
}