gccrs: Set the default ABI to C for extern blocks and extern functions

Previously, the default ABI was set to Rust, which is not correct for
extern blocks and extern functions. This patch changes the default
ABI to C for these cases.

gcc/rust/ChangeLog:

	* hir/rust-ast-lower-base.cc (ASTLoweringBase::lower_qualifiers):
	Change default ABI to C for extern functions
	(ASTLoweringBase::lower_extern_block): Likewise

Signed-off-by: Nobel Singh <nobel2073@gmail.com>

diff --git a/gcc/rust/hir/rust-ast-lower-base.cc b/gcc/rust/hir/rust-ast-lower-base.cc
index 748cec74829cbb441641af98e802638dbb03ebe7..19f208852090b8256d0690765b8ece8f4c109ba3 100644 (file)
--- a/gcc/rust/hir/rust-ast-lower-base.cc
+++ b/gcc/rust/hir/rust-ast-lower-base.cc
@@ -718,8 +718,8 @@ ASTLoweringBase::lower_qualifiers (const AST::FunctionQualifiers &qualifiers)
   Unsafety unsafety
     = qualifiers.is_unsafe () ? Unsafety::Unsafe : Unsafety::Normal;
   bool has_extern = qualifiers.is_extern ();
+  ABI abi = has_extern ? ABI::C : ABI::RUST;
 
-  ABI abi = ABI::RUST;
   if (qualifiers.has_abi ())
     {
       const std::string &extern_abi = qualifiers.get_extern_abi ();
@@ -965,7 +965,7 @@ ASTLoweringBase::lower_extern_block (AST::ExternBlock &extern_block)
       extern_items.push_back (std::unique_ptr<HIR::ExternalItem> (lowered));
     }
 
-  ABI abi = ABI::RUST;
+  ABI abi = ABI::C;
   if (extern_block.has_abi ())
     {
       const std::string &extern_abi = extern_block.get_abi ();