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compiletest: Deny usage of special FileCheck suffixes as revision names #134925

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Merged
merged 2 commits into from
Jan 5, 2025
+65 −0
Merged

compiletest: Deny usage of special FileCheck suffixes as revision names #134925

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891041f
deny usage of FileCheck prefixes as revision names
DavisRayM Dec 30, 2024
4a5e76a
limit special `FileCheck` revision checks
DavisRayM Jan 3, 2025
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10 changes: 10 additions & 0 deletions src/tools/compiletest/src/header.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -934,6 +934,9 @@ fn iter_header(

impl Config {
fn parse_and_update_revisions(&self, testfile: &Path, line: &str, existing: &mut Vec<String>) {
const FORBIDDEN_REVISION_NAMES: [&str; 9] =
["CHECK", "COM", "NEXT", "SAME", "EMPTY", "NOT", "COUNT", "DAG", "LABEL"];

if let Some(raw) = self.parse_name_value_directive(line, "revisions") {
if self.mode == Mode::RunMake {
panic!("`run-make` tests do not support revisions: {}", testfile.display());
Expand All @@ -948,6 +951,13 @@ impl Config {
raw,
testfile.display()
);
} else if FORBIDDEN_REVISION_NAMES.contains(&revision.as_str()) {
panic!(
"invalid revision: `{}` in line `{}`: {}",
revision,
raw,
testfile.display()
);
}
existing.push(revision);
}
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15 changes: 15 additions & 0 deletions src/tools/compiletest/src/header/tests.rs
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Expand Up @@ -553,6 +553,21 @@ fn test_duplicate_revisions() {
parse_rs(&config, "//@ revisions: rpass1 rpass1");
}

#[test]
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Suggestion: just #[should_panic] here instead of trying to catch the panic.

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Changed in the latest commit. I had to select a specific revision name for this CHECK, I'm not currently aware of a way to test all of them without manually catching the panic... Any tips on this will be greatly appreciated

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@jieyouxu jieyouxu Jan 4, 2025 •
edited
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In the long run compiletest shouldn't be using randomly placed panics as an error handling strategy (really, the lack thereof), but in the short run this is reasonable.

I think it's a reasonable compromise for the time being.

fn test_forbidden_revisions() {
let config: Config = cfg().build();
let revisions = ["CHECK", "COM", "NEXT", "SAME", "EMPTY", "NOT", "COUNT", "DAG", "LABEL"];
for rev in revisions {
let res = std::panic::catch_unwind(|| {
parse_rs(&config, format!("//@ revisions: {rev}").as_str());
});
assert!(res.is_err());
if let Some(msg) = res.unwrap_err().downcast_ref::<String>() {
assert!(msg.contains(format!("invalid revision: `{rev}` in line ` {rev}`").as_str()))
}
}
}

#[test]
fn ignore_arch() {
let archs = [
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