diff --git a/test_regress/t/t_func_io_order.v b/test_regress/t/t_func_io_order.v
index 97c5d514d..4c03675b0 100644
--- a/test_regress/t/t_func_io_order.v
+++ b/test_regress/t/t_func_io_order.v
@@ -31,7 +31,7 @@ module t(/*AUTOARG*/
    // Test loop
    always @ (posedge clk) begin
 `ifdef TEST_VERBOSE
-      $write("[%0t] cyc==%0d crc=%x result=%x\n", $time, cyc, crc, result);
+      $write("[%0t] cyc==%0d crc=%x result=%x\n", $time, cyc, crc);
 `endif
       cyc <= cyc + 1;
       crc <= {crc[62:0], crc[63] ^ crc[2] ^ crc[0]};
diff --git a/test_regress/t/t_math_real.v b/test_regress/t/t_math_real.v
index f9ee46d5b..3957d25a4 100644
--- a/test_regress/t/t_math_real.v
+++ b/test_regress/t/t_math_real.v
@@ -178,7 +178,7 @@ module t (/*AUTOARG*/
    // Test loop
    always @ (posedge clk) begin
 `ifdef TEST_VERBOSE
-      $write("[%0t] cyc==%0d crc=%x result=%x\n", $time, cyc, crc, result);
+      $write("[%0t] cyc==%0d\n", $time, cyc);
 `endif
       cyc <= cyc + 1;
       if (cyc==0) begin
diff --git a/test_regress/t/t_math_shortreal.v b/test_regress/t/t_math_shortreal.v
index 554297b44..faf30f99a 100644
--- a/test_regress/t/t_math_shortreal.v
+++ b/test_regress/t/t_math_shortreal.v
@@ -86,7 +86,7 @@ module t (/*AUTOARG*/
    // Test loop
    always @ (posedge clk) begin
 `ifdef TEST_VERBOSE
-      $write("[%0t] cyc==%0d crc=%x result=%x\n", $time, cyc, crc, result);
+      $write("[%0t] cyc==%0d\n", $time, cyc);
 `endif
       cyc <= cyc + 1;
       if (cyc==0) begin
diff --git a/test_regress/t/t_vpi_const_type.pl b/test_regress/t/t_vpi_const_type.pl
index c4acd4ebd..f0844224f 100755
--- a/test_regress/t/t_vpi_const_type.pl
+++ b/test_regress/t/t_vpi_const_type.pl
@@ -10,9 +10,6 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 scenarios(simulator => 1);
 
-skip("Known compiler limitation")
-    if $Self->cxx_version =~ /\(GCC\) 4.4/;
-
 compile(
     make_top_shell => 0,
     make_main => 0,
diff --git a/test_regress/t/t_vpi_dump.pl b/test_regress/t/t_vpi_dump.pl
index 2031c57cd..63872e680 100755
--- a/test_regress/t/t_vpi_dump.pl
+++ b/test_regress/t/t_vpi_dump.pl
@@ -10,9 +10,6 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 scenarios(simulator => 1);
 
-skip("Known compiler limitation")
-    if $Self->cxx_version =~ /\(GCC\) 4.4/;
-
 compile(
     make_top_shell => 0,
     make_main => 0,
diff --git a/test_regress/t/t_vpi_dump_missing_scopes.pl b/test_regress/t/t_vpi_dump_missing_scopes.pl
index ebd033e3f..d42aaae80 100755
--- a/test_regress/t/t_vpi_dump_missing_scopes.pl
+++ b/test_regress/t/t_vpi_dump_missing_scopes.pl
@@ -10,9 +10,6 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 scenarios(simulator => 1);
 
-skip("Known compiler limitation")
-    if $Self->cxx_version =~ /\(GCC\) 4.4/;
-
 compile(
     make_top_shell => 0,
     make_main => 0,
diff --git a/test_regress/t/t_vpi_get.pl b/test_regress/t/t_vpi_get.pl
index dcfbbb5cd..ffc7c5cff 100755
--- a/test_regress/t/t_vpi_get.pl
+++ b/test_regress/t/t_vpi_get.pl
@@ -10,9 +10,6 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 scenarios(simulator => 1);
 
-skip("Known compiler limitation")
-    if $Self->cxx_version =~ /\(GCC\) 4.4/;
-
 compile(
     make_top_shell => 0,
     make_main => 0,
diff --git a/test_regress/t/t_vpi_get_public_rw_switch.pl b/test_regress/t/t_vpi_get_public_rw_switch.pl
index b904cf347..f3b80b49d 100755
--- a/test_regress/t/t_vpi_get_public_rw_switch.pl
+++ b/test_regress/t/t_vpi_get_public_rw_switch.pl
@@ -10,9 +10,6 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 scenarios(simulator => 1);
 
-skip("Known compiler limitation")
-    if $Self->cxx_version =~ /\(GCC\) 4.4/;
-
 vm_prefix("Vt_vpi_get");
 top_filename("t/t_vpi_get.v");
 pli_filename("t_vpi_get.cpp");
diff --git a/test_regress/t/t_vpi_memory.pl b/test_regress/t/t_vpi_memory.pl
index 25fafd2ee..d0eaba406 100755
--- a/test_regress/t/t_vpi_memory.pl
+++ b/test_regress/t/t_vpi_memory.pl
@@ -10,9 +10,6 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 scenarios(simulator => 1);
 
-skip("Known compiler limitation")
-    if $Self->cxx_version =~ /\(GCC\) 4.4/;
-
 compile(
     make_top_shell => 0,
     make_main => 0,
diff --git a/test_regress/t/t_vpi_module.pl b/test_regress/t/t_vpi_module.pl
index e75802cde..a19359ec3 100755
--- a/test_regress/t/t_vpi_module.pl
+++ b/test_regress/t/t_vpi_module.pl
@@ -10,9 +10,6 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 scenarios(simulator => 1);
 
-skip("Known compiler limitation")
-    if $Self->cxx_version =~ /\(GCC\) 4.4/;
-
 compile(
     make_top_shell => 0,
     make_main => 0,
diff --git a/test_regress/t/t_vpi_module_dpi.pl b/test_regress/t/t_vpi_module_dpi.pl
index 247d42db9..1b4fc72a9 100755
--- a/test_regress/t/t_vpi_module_dpi.pl
+++ b/test_regress/t/t_vpi_module_dpi.pl
@@ -10,9 +10,6 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 scenarios(simulator => 1);
 
-skip("Known compiler limitation")
-    if $Self->cxx_version =~ /\(GCC\) 4.4/;
-
 vm_prefix("Vt_vpi_module");
 top_filename("t/t_vpi_module.v");
 pli_filename("t_vpi_module.cpp");
diff --git a/test_regress/t/t_vpi_module_empty.pl b/test_regress/t/t_vpi_module_empty.pl
index 8760dddb8..be16f1cf3 100755
--- a/test_regress/t/t_vpi_module_empty.pl
+++ b/test_regress/t/t_vpi_module_empty.pl
@@ -10,9 +10,6 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 scenarios(simulator => 1);
 
-skip("Known compiler limitation")
-    if $Self->cxx_version =~ /\(GCC\) 4.4/;
-
 compile(
     make_top_shell => 0,
     make_main => 0,
diff --git a/test_regress/t/t_vpi_package.pl b/test_regress/t/t_vpi_package.pl
index 81dbbe07a..6bc13b32f 100755
--- a/test_regress/t/t_vpi_package.pl
+++ b/test_regress/t/t_vpi_package.pl
@@ -10,9 +10,6 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 scenarios(simulator => 1);
 
-skip("Known compiler limitation")
-    if $Self->cxx_version =~ /\(GCC\) 4.4/;
-
 compile(
     make_top_shell => 0,
     make_main => 0,
diff --git a/test_regress/t/t_vpi_param.pl b/test_regress/t/t_vpi_param.pl
index 98ecea2c1..91be3146f 100755
--- a/test_regress/t/t_vpi_param.pl
+++ b/test_regress/t/t_vpi_param.pl
@@ -10,9 +10,6 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 scenarios(simulator => 1);
 
-skip("Known compiler limitation")
-    if $Self->cxx_version =~ /\(GCC\) 4.4/;
-
 compile(
     make_top_shell => 0,
     make_main => 0,
diff --git a/test_regress/t/t_vpi_public_depth.pl b/test_regress/t/t_vpi_public_depth.pl
index 465528af4..d88768602 100755
--- a/test_regress/t/t_vpi_public_depth.pl
+++ b/test_regress/t/t_vpi_public_depth.pl
@@ -10,9 +10,6 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 scenarios(simulator => 1);
 
-skip("Known compiler limitation")
-    if $Self->cxx_version =~ /\(GCC\) 4.4/;
-
 compile(
     make_top_shell => 0,
     make_main => 0,
diff --git a/test_regress/t/t_vpi_public_depth_off.pl b/test_regress/t/t_vpi_public_depth_off.pl
index 5f08e5aa4..85d8a09aa 100755
--- a/test_regress/t/t_vpi_public_depth_off.pl
+++ b/test_regress/t/t_vpi_public_depth_off.pl
@@ -13,9 +13,6 @@ scenarios(simulator => 1);
 pli_filename("t_vpi_public_depth.cpp");
 top_filename("t/t_vpi_public_depth.v");
 
-skip("Known compiler limitation")
-    if $Self->cxx_version =~ /\(GCC\) 4.4/;
-
 compile(
     make_top_shell => 0,
     make_main => 0,
diff --git a/test_regress/t/t_vpi_public_params.pl b/test_regress/t/t_vpi_public_params.pl
index 4092543ab..816218e57 100755
--- a/test_regress/t/t_vpi_public_params.pl
+++ b/test_regress/t/t_vpi_public_params.pl
@@ -13,9 +13,6 @@ scenarios(simulator => 1);
 # same vpi script should work with --public-params instead of inline publics
 pli_filename("t_vpi_param.cpp");
 
-skip("Known compiler limitation")
-    if $Self->cxx_version =~ /\(GCC\) 4.4/;
-
 compile(
     make_top_shell => 0,
     make_main => 0,