Fix crash when compiling specialized generic entrypoint containing a static const decl. (#8392)

Closes #8184.

We fixed three issues with this regression test:
1. After generating IR for a `SpecializeComponentType`, we should also
strip the frontend
decorations from the IR so there is no HighLevelDeclDecoration that will
go into the backend.
2. When lowering a static const inside a generic function, we should not
give the static const
a linkage, because it won't such constant will not appear in global
scope. Trying to give it a
linkage decoration will lead to the parent generic (for the function) to
have two duplicate
Export/Import decorations with different mangle names, and confuses the
linker.
3. Make sure internal exceptions does not leak through
    `IComponentType::getEntryPointCode`/`getTargetCode`.

1 files changed, 19 insertions, 7 deletions

diff --git a/source/slang/slang-target-program.cpp b/source/slang/slang-target-program.cpp
index ffb859b55..d7e7a73bb 100644
--- a/source/slang/slang-target-program.cpp
+++ b/source/slang/slang-target-program.cpp
@@ -98,16 +98,28 @@ IArtifact* TargetProgram::getOrCreateEntryPointResult(Int entryPointIndex, Diagn
     if (IArtifact* artifact = m_entryPointResults[entryPointIndex])
         return artifact;
 
-    // If we haven't yet computed a layout for this target
-    // program, we need to make sure that is done before
-    // code generation.
-    //
-    if (!getOrCreateIRModuleForLayout(sink))
+    try
+    {
+        // If we haven't yet computed a layout for this target
+        // program, we need to make sure that is done before
+        // code generation.
+        //
+        if (!getOrCreateIRModuleForLayout(sink))
+        {
+            return nullptr;
+        }
+
+        return _createEntryPointResult(entryPointIndex, sink);
+    }
+    catch (const Exception& e)
     {
+        sink->diagnose(
+            SourceLoc(),
+            Diagnostics::compilationAbortedDueToException,
+            typeid(e).name(),
+            e.Message);
         return nullptr;
     }
-
-    return _createEntryPointResult(entryPointIndex, sink);
 }
 
 } // namespace Slang