[gcc/devel/rust/master] Fix parsing of array expressions.

[gcc/devel/rust/master] Fix parsing of array expressions.

[Thomas Schwinge]

https://gcc.gnu.org/g:0ddec9f44d6ce81eec7aa62c2d9b13c9094e7857

commit 0ddec9f44d6ce81eec7aa62c2d9b13c9094e7857
Author: Owen Avery <powerboat9.gamer@gmail.com>
Date:   Mon Mar 27 11:05:03 2023 -0400

    Fix parsing of array expressions.
    
    Array expressions were being eagerly handled
    outside of Pratt parsing.
    
    gcc/rust/ChangeLog:
    
            * parse/rust-parse-impl.h
            (Parser<ManagedTokenSource>::parse_expr_without_block):
            Remove direct array expression handling.
    
    gcc/testsuite/ChangeLog:
    
            * rust/compile/array4.rs: New test.
            * rust/execute/torture/arrays.rs: New test.
    
    Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>

Diff:
---
 gcc/rust/parse/rust-parse-impl.h             | 3 ---
 gcc/testsuite/rust/compile/array4.rs         | 3 +++
 gcc/testsuite/rust/execute/torture/arrays.rs | 3 +++
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/gcc/rust/parse/rust-parse-impl.h b/gcc/rust/parse/rust-parse-impl.h
index 79dd4e2423c..7c554e8bd0f 100644
--- a/gcc/rust/parse/rust-parse-impl.h
+++ b/gcc/rust/parse/rust-parse-impl.h
@@ -7449,9 +7449,6 @@ Parser<ManagedTokenSource>::parse_expr_without_block (
     case MOVE:
       // closure expr (though not all closure exprs require this)
       return parse_closure_expr (std::move (outer_attrs));
-    case LEFT_SQUARE:
-      // array expr (creation, not index)
-      return parse_array_expr (std::move (outer_attrs));
       default: {
 	/* HACK: piggyback on pratt parsed expr and abuse polymorphism to
 	 * essentially downcast */
diff --git a/gcc/testsuite/rust/compile/array4.rs b/gcc/testsuite/rust/compile/array4.rs
new file mode 100644
index 00000000000..c70ca0a970a
--- /dev/null
+++ b/gcc/testsuite/rust/compile/array4.rs
@@ -0,0 +1,3 @@
+pub fn foo() {
+    [0, 1, 2][1];
+}
diff --git a/gcc/testsuite/rust/execute/torture/arrays.rs b/gcc/testsuite/rust/execute/torture/arrays.rs
new file mode 100644
index 00000000000..e30285f89e5
--- /dev/null
+++ b/gcc/testsuite/rust/execute/torture/arrays.rs
@@ -0,0 +1,3 @@
+fn main() -> i32 {
+    [55, 66, 77][1] - 66
+}