http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53766
Bug #: 53766 Summary: ICE in build_binary_op when using pragma Suppress (All_Checks) Classification: Unclassified Product: gcc Version: 4.7.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: ada AssignedTo: unassig...@gcc.gnu.org ReportedBy: baldr...@gcc.gnu.org At a guess, the code that inserts runtime checks adds a need type conversion that is forgotten when checks are suppressed. I see this with gcc-4.7 and with mainline. $ gcc-4.8 -c p.adb +===========================GNAT BUG DETECTED==============================+ | 4.8.0 20120624 (experimental) (x86_64-unknown-linux-gnu) GCC error: | | in build_binary_op, at ada/gcc-interface/utils2.c:1134 | | Error detected at p.adb:7:57 | | 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). p.adb p.ads compilation abandoned -- chop here -- with System.Storage_Elements; package P is procedure A (Offset : System.Storage_Elements.Storage_Offset); end; with Ada.Strings.Unbounded; package body P is use System.Storage_Elements; procedure A (Offset : Storage_Offset) is pragma Suppress (All_Checks); begin if Offset + Ada.Strings.Unbounded.Unbounded_String'Max_Size_In_Storage_Elements >= 123 then raise Program_Error; end if; end; end;