Add ParamDecl as the attribute target (#4067)

Currently we only allow variable, struct, and function as the target
for the user-defined attribute, this change adds the function parameter
to the target as well.

1 files changed, 5 insertions, 0 deletions

diff --git a/source/slang/slang-check-modifier.cpp b/source/slang/slang-check-modifier.cpp
index 13ad8be3a..56d905063 100644
--- a/source/slang/slang-check-modifier.cpp
+++ b/source/slang/slang-check-modifier.cpp
@@ -318,6 +318,11 @@ namespace Slang
             cls = m_astBuilder->findSyntaxClass(UnownedStringSlice::fromLiteral("FuncDecl"));
             return true;
         }
+        if (typeFlags == (int)UserDefinedAttributeTargets::Param)
+        {
+            cls = m_astBuilder->findSyntaxClass(UnownedStringSlice::fromLiteral("ParamDecl"));
+            return true;
+        }
         return false;
     }