From: Martin Jambor <mjambor@suse.cz>
Date: Mon, 23 Jun 2025 21:52:20 +0000 (+0200)
Subject: rust: Silence a clang warning in borrow-checker-diagnostics
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=1e69c5655894ab3cbeb4431a5b3daff211d3c4e1;p=thirdparty%2Fgcc.git

rust: Silence a clang warning in borrow-checker-diagnostics

When compiling
gcc/rust/checks/errors/borrowck/rust-borrow-checker-diagnostics.cc
with clang, it emits the following warning:

  gcc/rust/checks/errors/borrowck/rust-borrow-checker-diagnostics.cc:145:46: warning: non-constant-expression cannot be narrowed from type 'Polonius::Loan' (aka 'unsigned long') to 'uint32_t' (aka 'unsigned int') in initializer list [-Wc++11-narrowing]

I'd hope that for indexing that is never really a problem,
nevertheless if narrowing is taking place, I guess it can be argued it
should be made explicit.

gcc/rust/ChangeLog:

2025-06-23  Martin Jambor  <mjambor@suse.cz>

	* checks/errors/borrowck/rust-borrow-checker-diagnostics.cc
	(BorrowCheckerDiagnostics::get_loan): Type cast loan to uint32_t.
---

diff --git a/gcc/rust/checks/errors/borrowck/rust-borrow-checker-diagnostics.cc b/gcc/rust/checks/errors/borrowck/rust-borrow-checker-diagnostics.cc
index 6c67706780b..adf1448791e 100644
--- a/gcc/rust/checks/errors/borrowck/rust-borrow-checker-diagnostics.cc
+++ b/gcc/rust/checks/errors/borrowck/rust-borrow-checker-diagnostics.cc
@@ -142,7 +142,7 @@ BorrowCheckerDiagnostics::get_statement (Polonius::Point point)
 const BIR::Loan &
 BorrowCheckerDiagnostics::get_loan (Polonius::Loan loan)
 {
-  return bir_function.place_db.get_loans ()[{loan}];
+  return bir_function.place_db.get_loans ()[{(uint32_t) loan}];
 }
 
 const HIR::LifetimeParam *