[Bug c/37755] New: Mistaken Segmentation fault

[charpour at gnet dot gr]

GCC Version: 4.2.3
Host: Ubuntu 8.04

When I compile the following code:

#include <stdio.h>

typedef struct person {
  char name[40];
  int age;
} Person;

static Person make_person(void);

int main(void) {
  printf("%s\n", make_person().name);

  return 0;
}

static Person make_person(void) {
  static Person p = { "alexander", 18 };

  return p;
}

I get a false warning:

warning: format ‘%s’ expects type ‘char *’, but argument 2 has type ‘char[40]’

and when I execute the file I get a segmentation fault.

If I use: printf("%s\n", &make_person().name[0]);

everything works as expected and the output "alexander" is printed


-- 
           Summary: Mistaken Segmentation fault
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: charpour at gnet dot gr


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37755