Backout last commit; is unstable.

src/V3LinkDot.cpp

@@ -1860,7 +1860,7 @@ private:
     VSymEnt* m_pinSymp = nullptr;  // SymEnt for pin lookups
     const AstCell* m_cellp = nullptr;  // Current cell
     AstNodeModule* m_modp = nullptr;  // Current module
-    AstNodeFTask* m_ftaskp = nullptr;  // Current function/task
+    const AstNodeFTask* m_ftaskp = nullptr;  // Current function/task
     int m_modportNum = 0;  // Uniqueify modport numbers
 
     struct DotStates {
@@ -2748,11 +2748,8 @@ private:
                 if (foundp) {
                     if (VN_IS(foundp->nodep(), Var) && m_ds.m_dotText == "" && m_ftaskp
                         && m_ftaskp->name() == foundp->nodep()->name()) {
-                        // This is a recursive reference to the function itself, not to the var
+                        nodep->v3warn(E_UNSUPPORTED, "Unsupported: Recursive function call "
-                        nodep->taskp(m_ftaskp);
+                                                         << nodep->prettyNameQ());
-                        nodep->classOrPackagep(foundp->classOrPackagep());
-                        UINFO(7, "         Resolved recursive " << nodep
-                                                                << endl);  // Also prints taskp
                     } else {
                         nodep->v3error("Found definition of '"
                                        << m_ds.m_dotText << (m_ds.m_dotText == "" ? "" : ".")

src/V3Width.cpp

@@ -4538,8 +4538,7 @@ private:
         // Grab width from the output variable (if it's a function)
         if (nodep->didWidth()) return;
         if (nodep->doingWidth()) {
-            nodep->v3warn(E_UNSUPPORTED, "Unsupported: Recursive function or task call: "
+            nodep->v3warn(E_UNSUPPORTED, "Unsupported: Recursive function or task call");
-                                             << nodep->prettyNameQ());
             nodep->dtypeSetBit();
             nodep->didWidth(true);
             return;

test_regress/t/t_func_recurse.out

@@ -1,6 +1,5 @@
-%Error-UNSUPPORTED: t/t_func_recurse.v:9:27: Unsupported: Recursive function or task call: 'recurse_self'
+%Error-UNSUPPORTED: t/t_func_recurse.v:12:31: Unsupported: Recursive function call 'recurse_self'
-                                           : ... In instance t
+   12 |       else recurse_self = i + recurse_self(i - 1) * 2;
-    9 |    function automatic int recurse_self;
       |                               ^~~~~~~~~~~~
                     ... For error description see https://verilator.org/warn/UNSUPPORTED?v=latest
 %Error: Exiting due to

test_regress/t/t_func_recurse2.out

@@ -1,4 +1,4 @@
-%Error-UNSUPPORTED: t/t_func_recurse2.v:9:27: Unsupported: Recursive function or task call: 'recurse_1'
+%Error-UNSUPPORTED: t/t_func_recurse2.v:9:27: Unsupported: Recursive function or task call
                                             : ... In instance t
     9 |    function automatic int recurse_1;
       |                           ^~~~~~~~~

test_regress/t/t_func_recurse_param.out

@@ -1,6 +1,5 @@
-%Error-UNSUPPORTED: t/t_func_recurse_param.v:9:27: Unsupported: Recursive function or task call: 'recurse_self'
+%Error-UNSUPPORTED: t/t_func_recurse_param.v:12:31: Unsupported: Recursive function call 'recurse_self'
-                                                 : ... In instance t
+   12 |       else recurse_self = i + recurse_self(i - 1) * 2;
-    9 |    function automatic int recurse_self;
       |                               ^~~~~~~~~~~~
                     ... For error description see https://verilator.org/warn/UNSUPPORTED?v=latest
 %Error: Exiting due to

test_regress/t/t_func_recurse_param_bad.out

@@ -1,7 +1,5 @@
-%Error-UNSUPPORTED: t/t_func_recurse_param_bad.v:9:27: Unsupported: Recursive function or task call: 'recurse_self'
+%Error-UNSUPPORTED: t/t_func_recurse_param_bad.v:12:31: Unsupported: Recursive function call 'recurse_self'
-                                                     : ... In instance t
+   12 |       else recurse_self = i + recurse_self(i - 1) * 2;
-    9 |    function automatic int recurse_self;
       |                               ^~~~~~~~~~~~
                     ... For error description see https://verilator.org/warn/UNSUPPORTED?v=latest
-%Error: Verilator internal fault, sorry. Suggest trying --debug --gdbbt
+%Error: Exiting due to
-%Error: Command Failed