* Go patch committed: Use package path with embedded builtin
@ 2022-06-28 17:25 Ian Lance Taylor
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From: Ian Lance Taylor @ 2022-06-28 17:25 UTC (permalink / raw)
To: gcc-patches, gofrontend-dev
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This patch to the Go frontend changes the mangled name of a struct to
use the package path with an embedded builtin type. The test case is
https://go.dev/cl/414235. This fixes https://go.dev/issue/52856.
Bootstrapped and ran Go testsuite on x86_64-pc-linux-gnu. Committed
to mainline.
Ian
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74956337e8276e5bc9524104b01c147374dd94e7
diff --git a/gcc/go/gofrontend/MERGE b/gcc/go/gofrontend/MERGE
index 551ea650acf..13cb6ea4046 100644
--- a/gcc/go/gofrontend/MERGE
+++ b/gcc/go/gofrontend/MERGE
@@ -1,4 +1,4 @@
-d5b4abed2f206e492890acc20738e89617ea542c
+c7238f58a26131b7611eff6f555cab02af8a623c
The first line of this file holds the git revision number of the last
merge done from the gofrontend repository.
diff --git a/gcc/go/gofrontend/names.cc b/gcc/go/gofrontend/names.cc
index f85d84ceadf..dac7f20f5c1 100644
--- a/gcc/go/gofrontend/names.cc
+++ b/gcc/go/gofrontend/names.cc
@@ -831,15 +831,28 @@ Struct_type::do_mangled_name(Gogo* gogo, std::string* ret,
ret->push_back(' ');
}
- // For an anonymous field with an alias type, the field name
- // is the alias name.
- if (p->is_anonymous()
- && p->type()->named_type() != NULL
- && p->type()->named_type()->is_alias())
- p->type()->named_type()->append_symbol_type_name(gogo, true, ret,
- is_non_identifier);
+ const Type* ft = p->type();
+ const Named_type* nt = ft->named_type();
+
+ if (p->is_anonymous() && nt != NULL && nt->is_builtin())
+ {
+ // For an embedded field with a builtin type, we must
+ // include a package path. Otherwise embedding builtin
+ // types in different packages will produce identical
+ // types, which shouldn't happen because the builtin
+ // types are not exported.
+ ret->append(gogo->pkgpath());
+ ret->push_back('.');
+ nt->append_symbol_type_name(gogo, true, ret, is_non_identifier);
+ }
+ else if (p->is_anonymous() && nt != NULL && nt->is_alias())
+ {
+ // For an anonymous field with an alias type, the field name
+ // is the alias name.
+ nt->append_symbol_type_name(gogo, true, ret, is_non_identifier);
+ }
else
- this->append_mangled_name(p->type(), gogo, ret, is_non_identifier);
+ this->append_mangled_name(ft, gogo, ret, is_non_identifier);
if (p->has_tag())
{
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2022-06-28 17:25 Go patch committed: Use package path with embedded builtin Ian Lance Taylor
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