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* [gcc r13-5553] gccrs: Unit structs are not concrete when they need substitutions
@ 2023-01-31 13:15 Arthur Cohen
  0 siblings, 0 replies; only message in thread
From: Arthur Cohen @ 2023-01-31 13:15 UTC (permalink / raw)
  To: gcc-cvs

https://gcc.gnu.org/g:0fffc0e772d612d5c6ad72a632ac80b43eca1950

commit r13-5553-g0fffc0e772d612d5c6ad72a632ac80b43eca1950
Author: Philip Herron <philip.herron@embecosm.com>
Date:   Wed Aug 31 17:16:13 2022 +0100

    gccrs: Unit structs are not concrete when they need substitutions
    
    Fixes #1518
    
    gcc/rust/ChangeLog:
    
            * typecheck/rust-tyty.h: Fix `is_concrete` for unit types with
            substitutions.

Diff:
---
 gcc/rust/typecheck/rust-tyty.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/gcc/rust/typecheck/rust-tyty.h b/gcc/rust/typecheck/rust-tyty.h
index 24efc7aa54c..43460d2dd2f 100644
--- a/gcc/rust/typecheck/rust-tyty.h
+++ b/gcc/rust/typecheck/rust-tyty.h
@@ -1362,6 +1362,11 @@ public:
 
   bool is_concrete () const override final
   {
+    if (is_unit ())
+      {
+	return !needs_substitution ();
+      }
+
     for (auto &variant : variants)
       {
 	for (auto &field : variant->get_fields ())

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