Add body to randomize only if expression exists after being processed

Signed-off-by: Ryszard Rozak <[email protected]>
antmicro · Dec 4, 2024 · f39e625 · f39e625
1 parent 16e73af
commit f39e625
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/src/V3Randomize.cpp b/src/V3Randomize.cpp
@@ -884,10 +884,12 @@ class ConstraintExprVisitor final : public VNVisitor {
         m_taskp = new AstTask{nodep->fileline(), name + "_setup_constraint", m_genp};
         nodep->user2p(m_taskp);
         iterateChildren(nodep);
-        if (AstConstraint* constrp = VN_CAST(nodep, Constraint)) {
-            m_taskp->addStmtsp(constrp->itemsp()->unlinkFrBackWithNext());
-        } else if (AstWith* withp = VN_CAST(nodep, With)) {
-            m_taskp->addStmtsp(withp->exprp()->unlinkFrBackWithNext());
+        if (AstConstraint* const constrp = VN_CAST(nodep, Constraint)) {
+            if (constrp->itemsp()) {
+                m_taskp->addStmtsp(constrp->itemsp()->unlinkFrBackWithNext());
+            }
+        } else if (AstWith* const withp = VN_CAST(nodep, With)) {
+            if (withp->exprp()) m_taskp->addStmtsp(withp->exprp()->unlinkFrBackWithNext());
         }
     }
 };