diff --git a/t/30_hanoi.t_e b/t/30_hanoi.t
similarity index 98%
rename from t/30_hanoi.t_e
rename to t/30_hanoi.t
index d5b7da2..d9331ad 100644
--- a/t/30_hanoi.t_e
+++ b/t/30_hanoi.t
@@ -2,7 +2,7 @@
 # vi: ft= et tw=4 sw=4
 
 use lib 't/lib';
-use Test::Sakura 'no_plan';
+use Test::Sakura skip_all => 'Skip: seg fault in the code, gcc as well';
 
 run_tests();
 
diff --git a/t/34_array_assignment.t_e b/t/34_array_assignment.t
similarity index 77%
rename from t/34_array_assignment.t_e
rename to t/34_array_assignment.t
index 61c55be..c39c50a 100644
--- a/t/34_array_assignment.t_e
+++ b/t/34_array_assignment.t
@@ -1,8 +1,6 @@
-
-# vi: ft= et tw=4 sw=4
-
 use lib 't/lib';
-use Test::Sakura 'no_plan';
+#use Test::Sakura 'no_plan';
+use Test::Sakura skip_all => 'Skip on not supported';
 
 run_tests();
 
@@ -27,7 +25,7 @@ int main()
 
    int b[4];
 
-   b = a;
+   b = a;  // not supported
 
    printf("%d %d %d %d\n", b[0], b[1], b[2], b[3]);
 
diff --git a/t/46_grep.t_e b/t/46_grep.t
similarity index 99%
rename from t/46_grep.t_e
rename to t/46_grep.t
index d972be0..192e2bc 100644
--- a/t/46_grep.t_e
+++ b/t/46_grep.t
@@ -2,7 +2,8 @@
 # vi: ft= et tw=4 sw=4
 
 use lib 't/lib';
-use Test::Sakura 'no_plan';
+use Test::Sakura skip_all => 'Skip: does not compile even with gcc';
+
 
 run_tests();
 
@@ -111,6 +112,7 @@ char *pp, lbuf[LMAX], pbuf[PMAX];
 
 char *cclass();
 char *pmatch();
+void store(int op);
 
 
 /*** Display a file name *******************************/