[Bug middle-end/89998] [7/8/9 regression] ICE: verify_gimple failed in printf-return-value

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89998

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-invalid-code
                 CC|                            |msebor at gcc dot gnu.org
             Blocks|                            |85741

--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
This is another instance of the mismatched built-in signature problem.  With
-Wextra GCC 9 prints:

  warning: mismatch in return type of built-in function ‘sprintf’; expected
‘int’ [-Wbuiltin-declaration-mismatch]
    1 | unsigned int sprintf (char *str, const char *fmt, ...);

As we discussed, having the warning for the declaration disable treating the
function as a built-in will avoid these bugs.


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85741
[Bug 85741] [meta-bug] bogus/missing -Wformat-overflow