linalg-mnorm: gcc-15 test fix

Author: perazz

test/linalg/test_linalg_mnorm.fypp

@@ -18,9 +18,9 @@ module test_linalg_mnorm
         allocate(tests(0))
 
         #:for rk,rt,ri in RC_KINDS_TYPES
-        tests = [tests,new_unittest("test_matrix_norms_${ri}$",test_matrix_norms_${ri}$)]
+        call add_test(tests,new_unittest("test_matrix_norms_${ri}$",test_matrix_norms_${ri}$))
         #:for rank in range(3, MAXRANK)
-        tests = [tests,new_unittest("test_mnorm_${ri}$_${rank}$d",test_mnorm_${ri}$_${rank}$d)]
+        call add_test(tests,new_unittest("test_mnorm_${ri}$_${rank}$d",test_mnorm_${ri}$_${rank}$d))
         #:endfor
         #:endfor
 
@@ -135,6 +135,27 @@ module test_linalg_mnorm
 
     #:endfor
 
+    ! gcc-15 bugfix utility
+    pure subroutine add_test(tests,new_test)
+        type(unittest_type), allocatable, intent(inout) :: tests(:)    
+        type(unittest_type), intent(in) :: new_test
+        
+        integer :: n
+        type(unittest_type), allocatable :: new_tests(:)
+        
+        if (allocated(tests)) then 
+            n = size(tests)
+        else
+            n = 0
+        end if
+        
+        allocate(new_tests(n+1))
+        if (n>0) new_tests(1:n) = tests(1:n)
+                 new_tests(1+n) = new_test
+        call move_alloc(from=new_tests,to=tests)        
+        
+    end subroutine add_test
+
 end module test_linalg_mnorm
 
 program test_mnorm