Bug 737319

When compiling a test program written in Ada using GNAT 4.5.1 20100924 (Red Hat 4.5.1-4) (x86_64-redhat-linux-gnu (package gcc-gnat-4.5.1-4.fc14.x86_64), I see the following error message:

$ gnatmake test.adb
gcc -c test.adb
+===========================GNAT BUG DETECTED==============================+
| 4.5.1 20100924 (Red Hat 4.5.1-4) (x86_64-redhat-linux-gnu) Assert_Failure sinfo.adb:898|
| Error detected at test.adb:4:4                                           |
| Please submit a bug report; see http://gcc.gnu.org/bugs.html.            |
| Use a subject line meaningful to you and us to track the bug.            |
| Include the entire contents of this bug box in the report.               |
| Include the exact gcc or gnatmake command that you entered.              |
| Also include sources listed below in gnatchop format                     |
| (concatenated together with no headers between files).                   |
+==========================================================================+

Please include these source files with error report
Note that list may not be accurate in some cases,
so please double check that the problem can still
be reproduced with the set of files listed.
Consider also -gnatd.n switch (see debug.adb).

test.adb

test.adb:4:39: extra ")" ignored
compilation abandoned
gnatmake: "test.adb" compilation error

-- end of output --

The ada program text consists of the following lines:

-- begin program
with Ada.Text_IO;

procedure Test is
   subtype X is Integer range (1 .. 25);
   Y: Integer range X'First .. X'Last := X'First;
begin
   Ada.Text_IO.Put("Hello World");
end Test;

-- end program

The error lies with the line which reads:

   subtype X is Integer range (1 .. 25);

The brackets around the 1 .. 25 are wrong. Once removed, the error goes away.

However, the compiler should report a nice error message and not report that a bug in the compiler has been found.