[gcc r16-2927] gccrs: Fix narrowing of Loan (size_t) into LoanId (uint32)

[Arthur Cohen via Gcc-cvs]

https://gcc.gnu.org/g:a887f69e96b7507173771526e20715c31c8f844f

commit r16-2927-ga887f69e96b7507173771526e20715c31c8f844f
Author: Marc Poulhiès <d...@kataplop.net>
Date:   Thu Jul 3 23:29:48 2025 +0200

    gccrs: Fix narrowing of Loan (size_t) into LoanId (uint32)
    
    Fix narrowing:
    
      
-../../gcc/rust/checks/errors/borrowck/rust-borrow-checker-diagnostics.cc:145:46:
      warning: narrowing conversion of ‘loan’ from ‘Rust::Polonius::Loan’ {aka
      ‘long unsigned int’} to ‘uint32_t’ {aka ‘unsigned int’} [-Wnarrowing]
    
    gcc/rust/ChangeLog:
            * checks/errors/borrowck/rust-bir-place.h (LoanId::value): Make
            it size_t to match Loan's base type.
    
    Signed-off-by: Marc Poulhiès <d...@kataplop.net>

Diff:
---
 gcc/rust/checks/errors/borrowck/rust-bir-place.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/rust/checks/errors/borrowck/rust-bir-place.h 
b/gcc/rust/checks/errors/borrowck/rust-bir-place.h
index 14f1dd660b0e..c4631c7b2f16 100644
--- a/gcc/rust/checks/errors/borrowck/rust-bir-place.h
+++ b/gcc/rust/checks/errors/borrowck/rust-bir-place.h
@@ -53,7 +53,7 @@ using Variance = TyTy::VarianceAnalysis::Variance;
 /** A unique identifier for a loan in the BIR. */
 struct LoanId
 {
-  uint32_t value;
+  size_t value;
   // some overloads for comparision
   bool operator== (const LoanId &rhs) const { return value == rhs.value; }
   bool operator!= (const LoanId &rhs) const { return !(operator== (rhs)); }