-flto removes const vector

LTO algorithm removes HardwareVectors from the following test case even though KEEP is used in the linker script
Test case:
void _PowerON_Reset (void)
{
 __asm("");
}

#define FVECT_SECT __attribute__ ((section (".fvectors")))

const void *HardwareVectors[] FVECT_SECT = {
    _PowerON_Reset,
};

int main()
{
 return 0;
}

Invocation:
Option1
arm-none-eabi-gcc -Os test.c -c -flto
arm-none-eabi-gcc -Os -flto test.o -specs=nosys.specs -Wl,-Tscript.ld

Option2:
arm-none-eabi-gcc -Os -flto -specs=nosys.specs test.c -Wl,-Tscript.ld

 Linker script:
SECTIONS
{
 .fvectors 0x20020000 : AT (0x20020000)
 {
  KEEP(*(.fvectors))
 }
 .text 0x20020100 : AT (0x20020100)
 {
  *(.text)
 }
 .rvectors :
 {
  _rvectors_start = .;
  KEEP(*(.rvectors))
  _rvectors_end = .;
 }
 .init :
 {
  *(.init)
  PROVIDE_HIDDEN (__exidx_start = .);
  PROVIDE_HIDDEN (__exidx_end = .);
 }
 .fini :
 {
  *(.fini)
 }
 .got :
 {
  *(.got)
  *(.got.plt)
 }
 .rodata :
 {
  *(.rodata)
  *(.rodata.*)
  _erodata = .;
 }
 .eh_frame_hdr :
 {
  *(.eh_frame_hdr)
 }
 .eh_frame :
 {
  *(.eh_frame)
 }
 .jcr :
 {
  *(.jcr)
 }
 .tors :
 {
  __CTOR_LIST__ = .;
  . = ALIGN(2);
  __ctors = .;
  *(.ctors)
  __ctors_end = .;
  __CTOR_END__ = .;
  __DTOR_LIST__ = .;
  ___dtors = .;
  *(.dtors)
  ___dtors_end = .;
  __DTOR_END__ = .;
  . = ALIGN(2);
  _mdata = .;
 }
 .data 0x20060100 : AT (_mdata)
 {
  _data = .;
  *(.data)
  _edata = .;
 }
 .bss :
 {
  PROVIDE(__bss_start__ = .);
  _bss = .;
  *(.bss)
  *(.bss.**)
  *(COMMON)
  PROVIDE(__bss_end__ = .);
  _ebss = .;
  _end = .;
  PROVIDE(end = .);
 }
 .stack 0x20061100 (NOLOAD) : AT (0x20061100)
 {
  _stack = .;
 }
}

OBS. using __attribute__((used)) works.

Checked with several releases including the latest 5-2016-q2-update, it's reproducible with all of them.

Is this a bug in the compiler, or is there a problem with my invocation? Thank you!