translate-c: add support for __cleanup__ attribute

Use a `defer` statement to implement the C __cleanup__ attribute.

See https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html

1 files changed, 8 insertions, 0 deletions

diff --git a/src/zig_clang.cpp b/src/zig_clang.cpp
index bf6e09d8c0..de29c3cda7 100644
--- a/src/zig_clang.cpp
+++ b/src/zig_clang.cpp
@@ -1784,6 +1784,14 @@ unsigned ZigClangVarDecl_getAlignedAttribute(const struct ZigClangVarDecl *self,
     return 0;
 }
 
+const struct ZigClangFunctionDecl *ZigClangVarDecl_getCleanupAttribute(const struct ZigClangVarDecl *self) {
+    auto casted_self = reinterpret_cast<const clang::VarDecl *>(self);
+    if (const clang::CleanupAttr *CA = casted_self->getAttr<clang::CleanupAttr>()) {
+        return reinterpret_cast<const ZigClangFunctionDecl *>(CA->getFunctionDecl());
+    }
+    return nullptr;
+}
+
 unsigned ZigClangFieldDecl_getAlignedAttribute(const struct ZigClangFieldDecl *self, const ZigClangASTContext* ctx) {
     auto casted_self = reinterpret_cast<const clang::FieldDecl *>(self);
     auto casted_ctx = const_cast<clang::ASTContext *>(reinterpret_cast<const clang::ASTContext *>(ctx));