bjoernager/rust
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Gate fmt args flattening behind -Zflatten-format-args.

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This commit is contained in:
Mara Bos 2023-03-16 11:13:07 +01:00
parent 1d59081bfd
commit 995e57b89e
3 changed files with 9 additions and 2 deletions
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7
compiler/rustc_ast_lowering/src/format.rs
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@ -16,8 +16,11 @@ impl<'hir> LoweringContext<'_, 'hir> {
// Never call the const constructor of `fmt::Arguments` if the
// format_args!() had any arguments _before_ flattening/inlining.
let allow_const = fmt.arguments.all_args().is_empty();
let fmt = flatten_format_args(Cow::Borrowed(fmt));
let fmt = inline_literals(fmt);
let mut fmt = Cow::Borrowed(fmt);
if self.tcx.sess.opts.unstable_opts.flatten_format_args {
fmt = flatten_format_args(fmt);
fmt = inline_literals(fmt);
}
expand_format_args(self, sp, &fmt, allow_const)
}
}