[Bug ld/3223] New: ld fails to link correct variables from linker script.

[sjo at anglia dot com]

winxp SP2 running cygwin.

Upgrading binutils from 2.16.1 to 2.17 (and cvs head) the following problem has
appeared.
when using a startup file that uses variables from the linker script, the values
passed to the final binary are incorrect if the section is empty, data section
is used for this example.

In the example below the value for __data_start is incorrect if the data section
is empty, if the var is uncommented then the value for __data_start is correct.

Built with command line:
arm-elf-as --gdwarf-2 test.s -o test.o
arm-elf-ld -Ttext 0x00000000 -Tdata 0x20000000 -Map=test.map -o test.elf test.o

test.s dump:

    .data

#var1:  .long   0x10

    .text
    .arm

    .global _start

_start:

/* Relocate .data section (Copy from ROM to RAM) */
    LDR     r1, =_etext
    LDR     r2, =__data_start
    LDR     r3, =_edata
LoopRel:
    CMP     r2, r3
    LDRLO   r0, [r1], #4
    STRLO   r0, [r2], #4
    BLO     LoopRel

main:
    B           main

    .end

-- 
           Summary: ld fails to link correct variables from linker script.
           Product: binutils
           Version: 2.18 (HEAD)
            Status: NEW
          Severity: normal
          Priority: P2
         Component: ld
        AssignedTo: unassigned at sources dot redhat dot com
        ReportedBy: sjo at anglia dot com
                CC: bug-binutils at gnu dot org
 GCC build triplet: i686-pc-cygwin
  GCC host triplet: i686-pc-cygwin
GCC target triplet: arm-elf


http://sourceware.org/bugzilla/show_bug.cgi?id=3223

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