[Bug c/52753] New: GCC not honoring -fPIE

[noloader at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52753

             Bug #: 52753
           Summary: GCC not honoring -fPIE
    Classification: Unclassified
           Product: gcc
           Version: 4.6.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: noloa...@gmail.com


It appears GCC 4.6.1 is not honoring -fPIE under all circumstances. Below, I
expect to see "Elf file type is DYN"

$ cat warn-test.c
#include <stdio.h>

int main(int argc, char* argv[])
{
  (void)argc;
  (void)argv;

  printf("argc: %d\n", argc); 
  printf("argv: %p\n", argv); 
  printf("main: %p\n", &main); 

  return 0;
}

$ gcc -Wall -Wextra -O2 -fPIE -Wl,-z,relro -Wl,-z,now -Wl,-z,noexecstack
-Wl,-z,noexecheap warn-test.c -o warn-test.exe/usr/bin/ld: warning: -z
noexecheap ignored.

$ ./warn-test.exe 
argc: 1
argv: 0x7fffe3139e28
main: 0x400440

$ ./warn-test.exe 
argc: 1
argv: 0x7fffbd2864f8
main: 0x400440

$ readelf -l warn-test.exe | grep "Elf file type"
Elf file type is EXEC (Executable file)

$ cat /proc/sys/kernel/randomize_va_space 2
2

$ uname -a
Linux mint-12-x64 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7 14:56:25 UTC 2011
x86_64 x86_64 x86_64 GNU/Linux

$ gcc --version
gcc (Ubuntu/Linaro 4.6.1-9ubuntu3) 4.6.1
Copyright (C) 2011 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.