[Bug c/55791] gcc fails to detect wrong type in sizeof in malloc

[egallager at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55791

--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
For reference, clang catches this with its static analyzer:

$ clang --analyze 55791.c
55791.c:10:15: warning: Result of 'malloc' is converted to a pointer of type
'char', which is incompatible with sizeof operand type 'char *'
        p = (char *) malloc( 10 * sizeof( char *));
             ~~~~~~  ^~~~~~       ~~~~~~~~~~~~~~~
1 warning generated.
$

Since gcc will be getting a static analyzer, too, once David Malcolm's analyzer
branch is merged, we could do this warning there, but I think it would make
more sense to do this warning in the compiler proper, though.