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| author | Philip Herron <philip.herron@embecosm.com> | 2021-03-30 18:23:53 +0100 |
|---|---|---|
| committer | Philip Herron <herron.philip@googlemail.com> | 2021-03-31 09:45:07 +0100 |
| commit | 67ed1e36ceae2edd11db4a7f333fe7530f3eed4c (patch) | |
| tree | d64ee711f842156da955038d6d8453be49634adb /gcc | |
| parent | f3275df08d6ad4808b6e03d5e0fa2609c5843ad6 (diff) | |
| download | gcc-67ed1e36ceae2edd11db4a7f333fe7530f3eed4c.zip gcc-67ed1e36ceae2edd11db4a7f333fe7530f3eed4c.tar.gz gcc-67ed1e36ceae2edd11db4a7f333fe7530f3eed4c.tar.bz2 | |
Fix bad tracking on used substitutions on generic types.
When implementing generics we need to keep track of used arguments to
recursively substitute ParamTypes when nessecary. This also applies for
cases such as: Foo<i32> where we can check wether we need to actually
perform a substitution.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/rust/typecheck/rust-tyty.cc | 6 | ||||
| -rw-r--r-- | gcc/rust/typecheck/rust-tyty.h | 4 |
2 files changed, 5 insertions, 5 deletions
diff --git a/gcc/rust/typecheck/rust-tyty.cc b/gcc/rust/typecheck/rust-tyty.cc index 58baee9..3fad7d9 100644 --- a/gcc/rust/typecheck/rust-tyty.cc +++ b/gcc/rust/typecheck/rust-tyty.cc @@ -369,10 +369,9 @@ ADTType::handle_substitions (SubstitutionArgumentMappings subst_mappings) return nullptr; } - used_arguments = subst_mappings; - ADTType *adt = static_cast<ADTType *> (clone ()); adt->set_ty_ref (mappings->get_next_hir_id ()); + adt->used_arguments = subst_mappings; for (auto &sub : adt->get_substs ()) { @@ -571,10 +570,9 @@ FnType::handle_substitions (SubstitutionArgumentMappings subst_mappings) return nullptr; } - used_arguments = subst_mappings; - FnType *fn = static_cast<FnType *> (clone ()); fn->set_ty_ref (mappings->get_next_hir_id ()); + fn->used_arguments = subst_mappings; for (auto &sub : fn->get_substs ()) { diff --git a/gcc/rust/typecheck/rust-tyty.h b/gcc/rust/typecheck/rust-tyty.h index ac5a766..0cf7d30 100644 --- a/gcc/rust/typecheck/rust-tyty.h +++ b/gcc/rust/typecheck/rust-tyty.h @@ -527,7 +527,9 @@ public: } } - bool was_substituted () const { return !used_arguments.is_error (); } + bool needs_substitution () const { return used_arguments.is_error (); } + + bool was_substituted () const { return !needs_substitution (); } SubstitutionArgumentMappings get_substitution_arguments () { |