[Bug middle-end/37280] [4.4 Regression] weak symbol regression breaks linux kernel

[chaoyingfu at gcc dot gnu dot org]

------- Comment #8 from chaoyingfu at gcc dot gnu dot org  2008-09-16 01:11 -------
Hi,

  For MIPS targets (mipsisa32r2-sde-elf), ".weak" is still not emitted.
  Thanks!

Ex:
# cat 152.c
extern int arr[] __attribute__((weak));

int test(int i)
{
  return arr[i];
}

# ~/dev/binutils3/build-all2/gcc/cc1 -quiet 152.c -o 152.s -O2
# cat 152.s
        .file   1 "152.c"
        .section .mdebug.abi32
        .previous
        .gnu_attribute 4, 1
        .text
        .align  2
        .globl  test
        .set    nomips16
        .ent    test
        .type   test, @function
test:
        .frame  $sp,0,$31               # vars= 0, regs= 0/0, args= 0, gp= 0
        .mask   0x00000000,0
        .fmask  0x00000000,0
        .set    noreorder
        .set    nomacro

        lui     $2,%hi(arr)
        addiu   $2,$2,%lo(arr)
        sll     $4,$4,2
        addu    $4,$4,$2
        j       $31
        lw      $2,0($4)

        .set    macro
        .set    reorder
        .end    test
        .size   test, .-test
        .ident  "GCC: (GNU) 4.4.0 20080915 (experimental) [trunk revision
131984]"


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37280