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Do not allow JSON targets to set is-builtin: true

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This commit is contained in:
Simonas Kazlauskas 2021-06-06 18:13:27 +03:00
parent 6440785304
commit f4701cd65c
5 changed files with 19 additions and 1 deletions
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4
compiler/rustc_target/src/spec/mod.rs
View File

@ -2010,6 +2010,10 @@ impl Target {
key!(supported_sanitizers, SanitizerSet)?;
key!(default_adjusted_cabi, Option<Abi>)?;
if base.is_builtin {
// This can cause unfortunate ICEs later down the line.
return Err(format!("may not set is_builtin for targets not built-in"));
}
// Each field should have been read using `Json::remove_key` so any keys remaining are unused.
let remaining_keys = obj.as_object().ok_or("Expected JSON object for target")?.keys();
Ok((

1
src/test/run-make-fulldeps/rustdoc-target-spec-json-path/target.json
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@ -8,7 +8,6 @@
"executables": true,
"has-elf-tls": true,
"has-rpath": true,
"is-builtin": true,
"linker-is-gnu": true,
"llvm-target": "x86_64-unknown-linux-gnu",
"max-atomic-width": 64,

2
src/test/run-make-fulldeps/target-specs/Makefile
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@ -7,3 +7,5 @@ all:
RUST_TARGET_PATH=. $(RUSTC) foo.rs --target=my-awesome-platform --crate-type=lib --emit=asm
RUST_TARGET_PATH=. $(RUSTC) foo.rs --target=my-x86_64-unknown-linux-gnu-platform --crate-type=lib --emit=asm
$(RUSTC) -Z unstable-options --target=my-awesome-platform.json --print target-spec-json > $(TMPDIR)/test-platform.json && $(RUSTC) -Z unstable-options --target=$(TMPDIR)/test-platform.json --print target-spec-json | diff -q $(TMPDIR)/test-platform.json -
$(RUSTC) foo.rs --target=definitely-not-builtin-target 2>&1 | $(CGREP) 'may not set is_builtin'
$(RUSTC) foo.rs --target=mismatching-data-layout

7
src/test/run-make-fulldeps/target-specs/definitely-not-builtin-target.json Normal file
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@ -0,0 +1,7 @@
{
"arch": "x86_64",
"is-builtin": true,
"data-layout": "e-m:e-i64:64-f80:128-n8:16:32:64-S128",
"llvm-target": "x86_64-unknown-unknown-gnu",
"target-pointer-width": "64"
}

6
src/test/run-make-fulldeps/target-specs/mismatching-data-layout.json Normal file
View File

@ -0,0 +1,6 @@
{
"arch": "x86_64",
"data-layout": "e-m:e-i64:16:32:64",
"llvm-target": "x86_64-unknown-unknown-gnu",
"target-pointer-width": "64"
}