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Update src/librustc_builtin_macros/format.rs

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Co-authored-by: varkor <github@varkor.com>
This commit is contained in:
David Hewitt 2020-07-01 11:35:17 +01:00
parent 1a0343217d
commit 10ebb2cbb2
2 changed files with 3 additions and 3 deletions
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2
src/librustc_builtin_macros/format.rs
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@ -537,7 +537,7 @@ impl<'a, 'b> Context<'a, 'b> {
name
));
err.note(
"to avoid ambiguity format_args! cannot capture variables \
"to avoid ambiguity, `format_args!` cannot capture variables \
when the format string is expanded from a macro",
);
} else if self.ecx.parse_sess().unstable_features.is_nightly_build() {

4
src/test/ui/fmt/format-args-capture-macro-hygiene.stderr
View File

@ -5,7 +5,7 @@ LL | format!(concat!("{foo}"));
| ^^^^^^^^^^^^^^^^
|
= note: did you intend to capture a variable `foo` from the surrounding scope?
= note: to avoid ambiguity format_args! cannot capture variables when the format string is expanded from a macro
= note: to avoid ambiguity, `format_args!` cannot capture variables when the format string is expanded from a macro
= note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
error: there is no argument named `bar`
@ -15,7 +15,7 @@ LL | format!(concat!("{ba", "r} {}"), 1);
| ^^^^^^^^^^^^^^^^^^^^^^^
|
= note: did you intend to capture a variable `bar` from the surrounding scope?
= note: to avoid ambiguity format_args! cannot capture variables when the format string is expanded from a macro
= note: to avoid ambiguity, `format_args!` cannot capture variables when the format string is expanded from a macro
= note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to 2 previous errors