38 lines
1.8 KiB
Rust
38 lines
1.8 KiB
Rust
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// This is a simple smoke test for rustc's `--emit dep-info` feature. It prints out
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// information about dependencies in a Makefile-compatible format, as a `.d` file.
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// Note that this test does not check that the `.d` file is Makefile-compatible.
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// This test first checks that emitting dep-info disables static analysis, preventing
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// compilation of `erroneous.rs` from causing a compilation failure.
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// Then, it checks that compilation using the flag is successful in general, even with
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// empty source files or source files that contain a whitespace character.
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// Finally, it removes one dependency and checks that compilation is still successful.
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// See https://github.com/rust-lang/rust/pull/10698
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use run_make_support::{rfs, rustc};
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fn main() {
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// We're only emitting dep info, so we shouldn't be running static analysis to
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// figure out that this program is erroneous.
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rustc().input("erroneous.rs").emit("dep-info").run();
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rustc().input("lib.rs").emit("dep-info,link").crate_type("lib").run();
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rfs::remove_file("foo.rs");
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rfs::create_file("foo.rs");
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// Compilation should succeed even if `foo.rs` is empty.
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rustc().input("lib.rs").emit("dep-info,link").crate_type("lib").run();
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// Again, with a space in the filename this time around.
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rustc().input("lib_foofoo.rs").emit("dep-info,link").crate_type("lib").run();
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rfs::remove_file("foo foo.rs");
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rfs::create_file("foo foo.rs");
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// Compilation should succeed even if `foo foo.rs` is empty.
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rustc().input("lib_foofoo.rs").emit("dep-info,link").crate_type("lib").run();
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// When a source file is deleted, compilation should still succeed if the library
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// also loses this source file dependency.
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rfs::remove_file("bar.rs");
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rustc().input("lib2.rs").emit("dep-info,link").crate_type("lib").run();
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}
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