[gccrs COMMIT] Remove non leaf errors
gerris.rs@gmail.com
gerris.rs@gmail.com
Fri Nov 28 23:57:38 GMT 2025
From: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
gcc/rust/ChangeLog:
* parse/rust-parse-impl.h (Parser::parse_function): Return a nullptr on
error instead of a valid function.
(Parser::parse_let_stmt): Remove non leaf error.
(Parser::parse_if_expr): Likewise.
(Parser::parse_loop_expr): Likewise.
(Parser::parse_expr): Return error on null denotation error.
gcc/testsuite/ChangeLog:
* rust/compile/braced_macro_arm.rs: Remove parent errors.
* rust/compile/issue-407-2.rs: Likewise.
* rust/compile/issue-407.rs: Likewise.
* rust/compile/issue-4162.rs: Likewise.
* rust/compile/issue-867.rs: Likewise.
* rust/compile/raw_ref_op_invalid.rs: Likewise.
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
---
This change was merged into the gccrs repository and is posted here for
upstream visibility and potential drive-by review, as requested by GCC
release managers.
Each commit email contains a link to its details on github from where you can
find the Pull-Request and associated discussions.
Commit on github: https://github.com/Rust-GCC/gccrs/commit/a9db302cbf593da5168d980da882a01843f01729
The commit has been mentioned in the following pull-request(s):
- https://github.com/Rust-GCC/gccrs/pull/4317
gcc/rust/parse/rust-parse-impl.h | 44 ++++---------------
.../rust/compile/braced_macro_arm.rs | 2 -
gcc/testsuite/rust/compile/issue-407-2.rs | 6 ---
gcc/testsuite/rust/compile/issue-407.rs | 2 -
gcc/testsuite/rust/compile/issue-4162.rs | 2 -
gcc/testsuite/rust/compile/issue-867.rs | 3 --
.../rust/compile/raw_ref_op_invalid.rs | 2 -
7 files changed, 9 insertions(+), 52 deletions(-)
diff --git a/gcc/rust/parse/rust-parse-impl.h b/gcc/rust/parse/rust-parse-impl.h
index 42e004428..6cb8f0e65 100644
--- a/gcc/rust/parse/rust-parse-impl.h
+++ b/gcc/rust/parse/rust-parse-impl.h
@@ -1855,15 +1855,7 @@ Parser<ManagedTokenSource>::parse_macro_invocation_semi (
std::unique_ptr<AST::TokenTree> tree = parse_token_tree ();
if (tree == nullptr)
- {
- Error error (t->get_locus (),
- "failed to parse token tree for macro invocation semi "
- "- found %qs",
- t->get_token_description ());
- add_error (std::move (error));
-
- return nullptr;
- }
+ return nullptr;
token_trees.push_back (std::move (tree));
@@ -2999,8 +2991,9 @@ Parser<ManagedTokenSource>::parse_function (AST::Visibility vis,
else
{
std::unique_ptr<AST::BlockExpr> block_expr = parse_block_expr ();
- if (block_expr != nullptr)
- body = std::move (block_expr);
+ if (block_expr == nullptr)
+ return nullptr;
+ body = std::move (block_expr);
}
return std::unique_ptr<AST::Function> (
@@ -6226,10 +6219,6 @@ Parser<ManagedTokenSource>::parse_let_stmt (AST::AttrVec outer_attrs,
expr = parse_expr ();
if (expr == nullptr)
{
- Error error (lexer.peek_token ()->get_locus (),
- "failed to parse expression in let statement");
- add_error (std::move (error));
-
skip_after_semicolon ();
return nullptr;
}
@@ -7256,11 +7245,7 @@ Parser<ManagedTokenSource>::parse_block_expr (
ExprOrStmt expr_or_stmt = parse_stmt_or_expr ();
if (expr_or_stmt.is_error ())
{
- Error error (
- t->get_locus (),
- "failed to parse statement or expression in block expression");
- add_error (std::move (error));
-
+ skip_after_end_block ();
return nullptr;
}
@@ -7783,14 +7768,7 @@ Parser<ManagedTokenSource>::parse_if_expr (AST::AttrVec outer_attrs,
// parse required block expr
std::unique_ptr<AST::BlockExpr> if_body = parse_block_expr ();
if (if_body == nullptr)
- {
- Error error (lexer.peek_token ()->get_locus (),
- "failed to parse if body block expression in if expression");
- add_error (std::move (error));
-
- // skip somewhere?
- return nullptr;
- }
+ return nullptr;
// branch to parse end or else (and then else, else if, or else if let)
if (lexer.peek_token ()->get_id () != ELSE)
@@ -8113,13 +8091,7 @@ Parser<ManagedTokenSource>::parse_loop_expr (AST::AttrVec outer_attrs,
// parse loop body, which is required
std::unique_ptr<AST::BlockExpr> loop_body = parse_block_expr ();
if (loop_body == nullptr)
- {
- Error error (lexer.peek_token ()->get_locus (),
- "could not parse loop body in (infinite) loop expression");
- add_error (std::move (error));
-
- return nullptr;
- }
+ return nullptr;
return std::unique_ptr<AST::LoopExpr> (
new AST::LoopExpr (std::move (loop_body), locus, std::move (label),
@@ -12198,6 +12170,8 @@ Parser<ManagedTokenSource>::parse_expr (int right_binding_power,
// parse null denotation (unary part of expression)
std::unique_ptr<AST::Expr> expr
= null_denotation ({}, null_denotation_restrictions);
+ if (expr == nullptr)
+ return nullptr;
return left_denotations (std::move (expr), right_binding_power,
std::move (outer_attrs), restrictions);
diff --git a/gcc/testsuite/rust/compile/braced_macro_arm.rs b/gcc/testsuite/rust/compile/braced_macro_arm.rs
index 9bcd1a69c..8782cf9f9 100644
--- a/gcc/testsuite/rust/compile/braced_macro_arm.rs
+++ b/gcc/testsuite/rust/compile/braced_macro_arm.rs
@@ -7,11 +7,9 @@ macro_rules! m {
fn h(c: bool) {
match c {
- // { dg-error "failed to parse statement or expression in block expression" "" { target *-*-* } .-1 }
true => m! {}
false => ()
// { dg-error "exprwithoutblock requires comma after match case expression in match arm \\(if not final case\\)" "" { target *-*-* } .-1 }
- // { dg-error "unrecognised token .false. for start of item" "" { target *-*-* } .-2 }
};
}
diff --git a/gcc/testsuite/rust/compile/issue-407-2.rs b/gcc/testsuite/rust/compile/issue-407-2.rs
index 002d998a9..6dad8612f 100644
--- a/gcc/testsuite/rust/compile/issue-407-2.rs
+++ b/gcc/testsuite/rust/compile/issue-407-2.rs
@@ -2,14 +2,8 @@
pub fn loopy() {
let mut a = 1;
loop {
- // { dg-error {failed to parse statement or expression in block expression} "" { target *-*-* } .-1 }
if a < 40 {
- // { dg-error {failed to parse statement or expression in block expression} "" { target *-*-* } .-1 }
a + = 1; // { dg-error "found unexpected token '=' in null denotation" }
- // { dg-error {failed to parse statement or expression in block expression} "" { target *-*-* } .-1 }
- // { dg-error {failed to parse if body block expression in if expression} "" { target *-*-* } .-2 }
- // { dg-error {could not parse loop body in \(infinite\) loop expression} "" { target *-*-* } .-3 }
- // { dg-error {unrecognised token 'integer literal' for start of item} "" { target *-*-* } .-4 }
} else {
break;
}
diff --git a/gcc/testsuite/rust/compile/issue-407.rs b/gcc/testsuite/rust/compile/issue-407.rs
index 9188c2c6b..3a9dbeba9 100644
--- a/gcc/testsuite/rust/compile/issue-407.rs
+++ b/gcc/testsuite/rust/compile/issue-407.rs
@@ -2,6 +2,4 @@
fn test() {
let mut a = 1;
a + = 1; // { dg-error "found unexpected token '=' in null denotation" }
- // { dg-error {failed to parse statement or expression in block expression} "" { target *-*-* } .-1 }
- // { dg-error {unrecognised token 'integer literal' for start of item} "" { target *-*-* } .-2 }
}
diff --git a/gcc/testsuite/rust/compile/issue-4162.rs b/gcc/testsuite/rust/compile/issue-4162.rs
index 7caf8870c..ffaa92d97 100644
--- a/gcc/testsuite/rust/compile/issue-4162.rs
+++ b/gcc/testsuite/rust/compile/issue-4162.rs
@@ -1,8 +1,6 @@
pub fn main() {
while let = 5
// { dg-error "should be at least 1 pattern" "" { target *-*-* } .-1 }
- // { dg-error "failed to parse statement or expression in block expression" "" { target *-*-* } .-2 }
- // { dg-error "unrecognised token .=. for start of item" "" { target *-*-* } .-3 }
{}
}
diff --git a/gcc/testsuite/rust/compile/issue-867.rs b/gcc/testsuite/rust/compile/issue-867.rs
index c61de09d8..1aa29b3ed 100644
--- a/gcc/testsuite/rust/compile/issue-867.rs
+++ b/gcc/testsuite/rust/compile/issue-867.rs
@@ -1,7 +1,4 @@
fn main() {
let _ = 42;
let a = _ + 123; // { dg-error "use of '_' is not allowed on the right-side of an assignment" }
- // { dg-error {failed to parse expression in let statement} "" { target *-*-* } .-1 }
- // { dg-error {failed to parse statement or expression in block expression} "" { target *-*-* } .-2 }
- // { dg-error {unrecognised token '\}' for start of item} "" { target *-*-* } .+1 }
}
diff --git a/gcc/testsuite/rust/compile/raw_ref_op_invalid.rs b/gcc/testsuite/rust/compile/raw_ref_op_invalid.rs
index 90e169f30..42ec63d73 100644
--- a/gcc/testsuite/rust/compile/raw_ref_op_invalid.rs
+++ b/gcc/testsuite/rust/compile/raw_ref_op_invalid.rs
@@ -7,6 +7,4 @@ pub struct Toto {
pub fn test(mut toto: Toto) {
let _c = &raw toto.u; //{ dg-error "expecting .;. but .identifier. found" "" { target *-*-* } }
- //{ dg-excess-errors "Additional errors for parent items" { target *-*-* } }
-
}
base-commit: 8f265ddce78410a52b93689998b2a267d7ceb8e8
--
2.51.2
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