[Bug c/22020] New: Poor error message for invalid cast in initializer

[ebotcazou at gcc dot gnu dot org]

Compile

int a;
int b = (int)&a;
short c = (short)&a;

on a 32-bit platform:

eric@linux:~> gcc -S t.c 
t.c:3: error: initializer element is not constant


Reading C99 6.6 §7-10, I understand that the compiler is entitled to accept the
first initializer but not the second.  However I find the error message not very
helpful, especially in light of the other case.

The Sun Studio compiler issues:

gax% cc -S t.c
"t.c", line 3: an address is not allowed in a constant initializer for an
integral type whose size is smaller than the size of a pointer

which is much nicer.

-- 
           Summary: Poor error message for invalid cast in initializer
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: enhancement
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ebotcazou at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22020