[Bug ld/25081] New: Discrepancy between VMA and LMA after ALIGN

[joey.ye at arm dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=25081

            Bug ID: 25081
           Summary: Discrepancy between VMA and LMA after ALIGN
           Product: binutils
           Version: 2.34 (HEAD)
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ld
          Assignee: unassigned at sourceware dot org
          Reporter: joey.ye at arm dot com
  Target Milestone: ---

Following case fails with trunk 2.33 on x86_64 and arm, and seems to be working
with 2.27:

$ cat a.c
int g = 4;
int main()
{
    return g;
}
$ cat s.ld
MEMORY
{
  FLASH (rx) : ORIGIN = 0, LENGTH = 0x10000000
  RAM (rwx) : ORIGIN = 0x10000000, LENGTH = 0x10000000
}
ENTRY(main)
SECTIONS
{
    .text :
    {
        *(.text*)
        /* Force text section end unaligned */
        . = ALIGN(16);
        LONG(0)
        LONG(0)
        LONG(0)
    } > FLASH
    .sec1 : ALIGN(16)
    {
        *(.section_noexist)
        /* Aligning LMA in a leading empty section, for some reason
           doesn't align VMA according */
        . = ALIGN(16);
        __some_symbol = .;
    } > FLASH

    .sec2 :
    {
        /* To reproduce following must match one or more empty sections */
        /* Discrepancy between VMA and LMA starts from here */
        *(.bss*)
    } > FLASH

    .sec3 :
    {
        /* Discrepancy between VMA and LMA remains here */
        LONG(0)
        LONG(0)
    } > FLASH

    .data :
    {
        *(.data*)
    } > RAM AT> FLASH
    .bss :
    {
        *(COMMON)
    } > RAM
}
$ ld -v
GNU ld (GNU Binutils) 2.33.50.20191008
$ gcc -c a.c
$ ld -T s.ld -Map=a.map a.o -o a.out
ld: section .data LMA [0000000000000060,0000000000000063] overlaps section
.sec3 LMA [0000000000000060,0000000000000067]

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