41 lines
1.6 KiB
Diff
41 lines
1.6 KiB
Diff
From e8e5eb58c0d6890f73ea01354e18f51b1a6697f8 Mon Sep 17 00:00:00 2001
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From: Josh Stone <jistone@redhat.com>
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Date: Tue, 15 May 2018 17:48:02 -0700
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Subject: [PATCH] Ensure libraries built in stage0 have unique metadata
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Issue #50786 shows a case with local rebuild where the libraries built
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by stage0 had the same suffix as stage0's own, and were accidentally
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loaded by that stage0 rustc when compiling `librustc_trans`.
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Now we set `__CARGO_DEFAULT_LIB_METADATA` to "bootstrap" during stage0,
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rather than the release channel like usual, so the library suffix will
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always be completely distinct from the stage0 compiler.
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---
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src/bootstrap/builder.rs | 10 +++++++++-
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1 file changed, 9 insertions(+), 1 deletion(-)
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diff --git a/src/bootstrap/builder.rs b/src/bootstrap/builder.rs
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index 17f19222e6ea..e5824010ef2c 100644
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--- a/src/bootstrap/builder.rs
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+++ b/src/bootstrap/builder.rs
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@@ -592,7 +592,15 @@ impl<'a> Builder<'a> {
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// FIXME: Temporary fix for https://github.com/rust-lang/cargo/issues/3005
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// Force cargo to output binaries with disambiguating hashes in the name
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- cargo.env("__CARGO_DEFAULT_LIB_METADATA", &self.config.channel);
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+ let metadata = if compiler.stage == 0 {
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+ // Treat stage0 like special channel, whether it's a normal prior-
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+ // release rustc or a local rebuild with the same version, so we
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+ // never mix these libraries by accident.
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+ "bootstrap"
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+ } else {
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+ &self.config.channel
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+ };
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+ cargo.env("__CARGO_DEFAULT_LIB_METADATA", &metadata);
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let stage;
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if compiler.stage == 0 && self.local_rebuild {
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--
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2.17.0
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