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Work around rust-lang/rust#58516

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This commit is contained in:
Ximin Luo 2019-05-20 20:18:24 -07:00
parent 0cbdea5fa9
commit 81fb2d97d3
1 changed files with 19 additions and 2 deletions
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21
crates/macro-support/src/parser.rs
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@ -60,6 +60,7 @@ macro_rules! methods {
($(($name:ident $(($other:tt))*, $variant:ident($($contents:tt)*)),)*) => {
$(methods!(@method $name, $variant($($contents)*));)*
#[cfg(feature = "strict-macro")]
fn check_used(self) -> Result<(), Diagnostic> {
// Account for the fact this method was called
ATTRS.with(|state| state.checks.set(state.checks.get() + 1));
@ -69,9 +70,12 @@ macro_rules! methods {
if used.get() {
continue
}
if !cfg!(feature = "strict-macro") {
// The check below causes rustc to crash on powerpc64 platforms
// with an LLVM error. To avoid this, we instead use #[cfg()]
// and duplicate the function below. See #58516 for details.
/*if !cfg!(feature = "strict-macro") {
continue
}
}*/
let span = match attr {
$(BindgenAttr::$variant(span, ..) => span,)*
};
@ -79,6 +83,19 @@ macro_rules! methods {
}
Diagnostic::from_vec(errors)
}
#[cfg(not(feature = "strict-macro"))]
fn check_used(self) -> Result<(), Diagnostic> {
// Account for the fact this method was called
ATTRS.with(|state| state.checks.set(state.checks.get() + 1));
let mut errors = Vec::new();
for (used, attr) in self.attrs.iter() {
if used.get() {
continue
}
}
Diagnostic::from_vec(errors)
}
};
(@method $name:ident, $variant:ident(Span, String, Span)) => {