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| author | Ian Lance Taylor <iant@golang.org> | 2022-07-16 16:29:38 -0700 |
|---|---|---|
| committer | Ian Lance Taylor <iant@golang.org> | 2022-07-16 16:30:34 -0700 |
| commit | 2b5baaef0b6e4d1d8e36cda091be26649163ffdb (patch) | |
| tree | f5c46f9c6f20ff4d80922339633f10282beb53ec /gcc/go/go-gcc.cc | |
| parent | d6d8e6a7e1379f9dfdf2f39efcc82d9185cca6d0 (diff) | |
| download | gcc-2b5baaef0b6e4d1d8e36cda091be26649163ffdb.zip gcc-2b5baaef0b6e4d1d8e36cda091be26649163ffdb.tar.gz gcc-2b5baaef0b6e4d1d8e36cda091be26649163ffdb.tar.bz2 | |
go: fix f().x where f returns zero-sized type
Test case is https://go.dev/cl/417874.
Fixes golang/go#23870
* go-gcc.cc (Gcc_backend::struct_field_expression): Handle a void
expression, as for f().x where f returns a zero-sized type.
Diffstat (limited to 'gcc/go/go-gcc.cc')
| -rw-r--r-- | gcc/go/go-gcc.cc | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/go/go-gcc.cc b/gcc/go/go-gcc.cc index 7b4b2ad..1ba7206 100644 --- a/gcc/go/go-gcc.cc +++ b/gcc/go/go-gcc.cc @@ -1707,6 +1707,13 @@ Gcc_backend::struct_field_expression(Bexpression* bstruct, size_t index, if (struct_tree == error_mark_node || TREE_TYPE(struct_tree) == error_mark_node) return this->error_expression(); + + // A function call that returns a zero-sized object will have been + // changed to return void. A zero-sized object can have a + // (zero-sized) field, so support that case. + if (TREE_TYPE(struct_tree) == void_type_node) + return bstruct; + gcc_assert(TREE_CODE(TREE_TYPE(struct_tree)) == RECORD_TYPE); tree field = TYPE_FIELDS(TREE_TYPE(struct_tree)); if (field == NULL_TREE) |