Auto merge of rust-lang#9599 - nyurik:inline-crash, r=flip1995

Add a temporary workaround for  multiline formart arg inlining

per suggestion in
rust-lang#102729 (comment)

workaround for an internal crash when handling multi-line format argument inlining.

changelog: none

(no point for changelog because it is still a new lint being introduced)

Author: bors

clippy_lints/src/format_args.rs

@@ -8,7 +8,7 @@ use if_chain::if_chain;
 use itertools::Itertools;
 use rustc_errors::Applicability;
 use rustc_hir::{Expr, ExprKind, HirId, QPath};
-use rustc_lint::{LateContext, LateLintPass};
+use rustc_lint::{LateContext, LateLintPass, LintContext};
 use rustc_middle::ty::adjustment::{Adjust, Adjustment};
 use rustc_middle::ty::Ty;
 use rustc_semver::RustcVersion;
@@ -173,6 +173,11 @@ fn check_uninlined_args(cx: &LateContext<'_>, args: &FormatArgsExpn<'_>, call_si
         return;
     }
 
+    // Temporarily ignore multiline spans: https://github.com/rust-lang/rust/pull/102729#discussion_r988704308
+    if fixes.iter().any(|(span, _)| cx.sess().source_map().is_multiline(*span)) {
+        return;
+    }
+
     span_lint_and_then(
         cx,
         UNINLINED_FORMAT_ARGS,

tests/ui/uninlined_format_args.fixed

@@ -44,7 +44,9 @@ fn tester(fn_arg: i32) {
     println!("val='{local_i32}'"); // space+tab
     println!("val='{local_i32}'"); // tab+space
     println!(
-        "val='{local_i32}'"
+        "val='{
+    }'",
+        local_i32
     );
     println!("{local_i32}");
     println!("{fn_arg}");
@@ -108,7 +110,8 @@ fn tester(fn_arg: i32) {
     println!("{local_f64:width$.prec$}");
     println!("{local_f64:width$.prec$} {local_f64} {width} {prec}");
     println!(
-        "{local_i32:width$.prec$} {local_i32:prec$.width$} {width:local_i32$.prec$} {width:prec$.local_i32$} {prec:local_i32$.width$} {prec:width$.local_i32$}",
+        "{0:1$.2$} {0:2$.1$} {1:0$.2$} {1:2$.0$} {2:0$.1$} {2:1$.0$}",
+        local_i32, width, prec,
     );
     println!(
         "{0:1$.2$} {0:2$.1$} {1:0$.2$} {1:2$.0$} {2:0$.1$} {2:1$.0$} {3}",
@@ -139,7 +142,9 @@ fn tester(fn_arg: i32) {
     println!(no_param_str!(), local_i32);
 
     println!(
-        "{val}",
+        "{}",
+        // comment with a comma , in it
+        val,
     );
     println!("{val}");
 

tests/ui/uninlined_format_args.stderr

@@ -59,22 +59,6 @@ LL -     println!("val='{     }'", local_i32); // tab+space
 LL +     println!("val='{local_i32}'"); // tab+space
    |
 
-error: variables can be used directly in the `format!` string
-  --> $DIR/uninlined_format_args.rs:46:5
-   |
-LL | /     println!(
-LL | |         "val='{
-LL | |     }'",
-LL | |         local_i32
-LL | |     );
-   | |_____^
-   |
-help: change this to
-   |
-LL -         "val='{
-LL +         "val='{local_i32}'"
-   |
-
 error: variables can be used directly in the `format!` string
   --> $DIR/uninlined_format_args.rs:51:5
    |
@@ -783,25 +767,6 @@ LL -     println!("{:1$.2$} {0} {1} {2}", local_f64, width, prec);
 LL +     println!("{local_f64:width$.prec$} {local_f64} {width} {prec}");
    |
 
-error: variables can be used directly in the `format!` string
-  --> $DIR/uninlined_format_args.rs:112:5
-   |
-LL | /     println!(
-LL | |         "{0:1$.2$} {0:2$.1$} {1:0$.2$} {1:2$.0$} {2:0$.1$} {2:1$.0$}",
-LL | |         local_i32, width, prec,
-LL | |     );
-   | |_____^
-   |
-help: change this to
-   |
-LL ~         "{local_i32:width$.prec$} {local_i32:prec$.width$} {width:local_i32$.prec$} {width:prec$.local_i32$} {prec:local_i32$.width$} {prec:width$.local_i32$}", width, prec,
-LL ~         "{0:1$.2$} {0:2$.1$} {1:0$.2$} {1:2$.0$} {2:0$.1$} {2:1$.0$}", width, prec,
-LL ~         "{0:1$.2$} {0:2$.1$} {1:0$.2$} {1:2$.0$} {2:0$.1$} {2:1$.0$}", width, prec,
-LL ~         "{0:1$.2$} {0:2$.1$} {1:0$.2$} {1:2$.0$} {2:0$.1$} {2:1$.0$}", width, prec,
-LL ~         "{0:1$.2$} {0:2$.1$} {1:0$.2$} {1:2$.0$} {2:0$.1$} {2:1$.0$}", width, prec,
-LL ~         "{0:1$.2$} {0:2$.1$} {1:0$.2$} {1:2$.0$} {2:0$.1$} {2:1$.0$}",
-   |
-
 error: variables can be used directly in the `format!` string
   --> $DIR/uninlined_format_args.rs:123:5
    |
@@ -850,22 +815,6 @@ LL -     println!("{}", format!("{}", local_i32));
 LL +     println!("{}", format!("{local_i32}"));
    |
 
-error: variables can be used directly in the `format!` string
-  --> $DIR/uninlined_format_args.rs:144:5
-   |
-LL | /     println!(
-LL | |         "{}",
-LL | |         // comment with a comma , in it
-LL | |         val,
-LL | |     );
-   | |_____^
-   |
-help: change this to
-   |
-LL -         "{}",
-LL +         "{val}",
-   |
-
 error: variables can be used directly in the `format!` string
   --> $DIR/uninlined_format_args.rs:149:5
    |
@@ -890,5 +839,5 @@ LL -     println!("expand='{}'", local_i32);
 LL +     println!("expand='{local_i32}'");
    |
 
-error: aborting due to 73 previous errors
+error: aborting due to 70 previous errors