diff options
Diffstat (limited to 'gcc/testsuite/gnat.dg/unchecked_convert2.adb')
-rw-r--r-- | gcc/testsuite/gnat.dg/unchecked_convert2.adb | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/gcc/testsuite/gnat.dg/unchecked_convert2.adb b/gcc/testsuite/gnat.dg/unchecked_convert2.adb new file mode 100644 index 000000000..f542af7c3 --- /dev/null +++ b/gcc/testsuite/gnat.dg/unchecked_convert2.adb @@ -0,0 +1,34 @@ +-- { dg-do run } + +with Ada.Unchecked_Conversion; +with Ada.Streams; use Ada.Streams; +with Ada.Text_IO; use Ada.Text_IO; + +procedure Unchecked_Convert2 is + + subtype Day_Number is Integer range 0 .. 31; + + subtype Byte_Array_Of_Integer is Stream_Element_Array + (1 .. Integer'Size / Stream_Element_Array'Component_Size); + + function To_Byte_Array is + new Ada.Unchecked_Conversion (Integer, Byte_Array_Of_Integer); + + Day_Now : Day_Number; + Pragma Volatile (Day_Now); + + Arr : Stream_Element_Array (1 .. 12) := (others => 16#ff#); + + procedure Test (Arr : Stream_Element_Array) is + begin + if Arr(5) /= 0 or Arr(6) /= 0 or Arr(7) /= 0 or Arr(8) /= 0 then + raise Program_Error; + end if; + end; + +begin + Day_Now := 0; + Arr (5 .. 8) := To_Byte_Array (Day_Now); + Test (Arr); + Arr (1) := 16#ff#; +end Unchecked_Convert2; |