mirror of https://github.com/rust-lang/rust
44 lines
1.7 KiB
Rust
44 lines
1.7 KiB
Rust
// Issue #66530: We would ICE if someone compiled with `-o /dev/null`,
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// because we would try to generate auxiliary files in `/dev/` (which
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// at least the OS X file system rejects).
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//
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// An attempt to `-Ztemps-dir` into a directory we cannot write into should
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// indeed be an error; but not an ICE.
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//
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// However, some folks run tests as root, which can write `/dev/` and end
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// up clobbering `/dev/null`. Instead we'll use an inaccessible path, which
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// also used to ICE, but even root can't magically write there.
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//
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// Note that `-Ztemps-dir` uses `create_dir_all` so it is not sufficient to
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// use a directory with non-existing parent like `/does-not-exist/output`.
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// See https://github.com/rust-lang/rust/issues/66530
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//@ ignore-riscv64
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// FIXME: The riscv64gc-gnu build container runs as root, and can always write
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// into `inaccessible/tmp`. Ideally, the riscv64-gnu docker container
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// would use a non-root user, but this leads to issues with
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// `mkfs.ext4 -d`, as well as mounting a loop device for the rootfs.
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//@ ignore-arm
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// Reason: linker error on `armhf-gnu`
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//@ ignore-windows
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// Reason: `set_readonly` has no effect on directories
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// and does not prevent modification.
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use run_make_support::{rfs, rustc, test_while_readonly};
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fn main() {
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// Create an inaccessible directory.
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rfs::create_dir("inaccessible");
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test_while_readonly("inaccessible", || {
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// Run rustc with `-Z temps-dir` set to a directory *inside* the inaccessible one,
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// so that it can't create `tmp`.
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rustc()
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.input("program.rs")
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.arg("-Ztemps-dir=inaccessible/tmp")
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.run_fail()
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.assert_stderr_contains(
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"failed to find or create the directory specified by `--temps-dir`",
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);
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});
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}
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