[Bug c++/43232] New: .eh_frame section created despite -fno-exceptions

["mh+gcc at glandium dot org" <gcc-bugzilla at gcc dot gnu dot org>]

With a source as simple as the following:
-----8<--------
int foo(int a, int b) {
        return a + b;
}
-----8<--------

a .eh_frame section is created on x86-64 when using -fno-exceptions. The
section is *not* created on x86.

on x86-64:
$ g++ -o test.o -c test.cpp -fno-exceptions
$ objdump -h test.o

test.o:     file format elf64-x86-64

Sections:
Idx Name          Size      VMA               LMA               File off  Algn
  0 .text         00000015  0000000000000000  0000000000000000  00000040  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  1 .data         00000000  0000000000000000  0000000000000000  00000058  2**2
                  CONTENTS, ALLOC, LOAD, DATA
  2 .bss          00000000  0000000000000000  0000000000000000  00000058  2**2
                  ALLOC
  3 .comment      0000001d  0000000000000000  0000000000000000  00000058  2**0
                  CONTENTS, READONLY
  4 .note.GNU-stack 00000000  0000000000000000  0000000000000000  00000075 
2**0
                  CONTENTS, READONLY
  5 .eh_frame     00000038  0000000000000000  0000000000000000  00000078  2**3
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, DATA

on x86:
$ g++ -o test.o -c test.cpp -fno-exceptions
$ objdump -h test.o

test.o:     file format elf32-i386

Sections:
Idx Name          Size      VMA       LMA       File off  Algn
  0 .text         0000000e  00000000  00000000  00000034  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  1 .data         00000000  00000000  00000000  00000044  2**2
                  CONTENTS, ALLOC, LOAD, DATA
  2 .bss          00000000  00000000  00000000  00000044  2**2
                  ALLOC
  3 .comment      0000001d  00000000  00000000  00000044  2**0
                  CONTENTS, READONLY
  4 .note.GNU-stack 00000000  00000000  00000000  00000061  2**0
                  CONTENTS, READONLY

The section is created on x86 when not using -fno-exceptions, which is not a
surprise.


-- 
           Summary: .eh_frame section created despite -fno-exceptions
           Product: gcc
           Version: 4.4.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mh+gcc at glandium dot org
 GCC build triplet: x86_64-linux-gnu
  GCC host triplet: x86_64-linux-gnu
GCC target triplet: x86_64-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43232