[Bug ld/16322] New: ld fails to generate GNU_RELRO segment

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=16322

            Bug ID: 16322
           Summary: ld fails to generate GNU_RELRO segment
           Product: binutils
           Version: 2.25 (HEAD)
            Status: NEW
          Severity: normal
          Priority: P2
         Component: ld
          Assignee: unassigned at sourceware dot org
          Reporter: hjl.tools at gmail dot com

address@hidden relro-6]$ cat x.c
extern void f1 (void);
#if 1
void * const p1 __attribute__ ((aligned(32))) = &f1;
#else
void * const p1 = &f1;
#endif
address@hidden relro-6]$ make libx.so LD=ld
gcc -fuse-ld=gold -B./  -O2 -fPIC   -c -o x.o x.c
ld -shared --gc-sections -z relro -o libx.so x.o
address@hidden relro-6]$ readelf -SWl libx.so
There are 12 section headers, starting at offset 0x1078:

Section Headers:
  [Nr] Name              Type            Address          Off    Size   ES Flg
Lk Inf Al
  [ 0]                   NULL            0000000000000000 000000 000000 00     
0   0  0
  [ 1] .hash             HASH            0000000000000120 000120 000030 04   A 
2   0  8
  [ 2] .dynsym           DYNSYM          0000000000000150 000150 0000a8 18   A 
3   2  8
  [ 3] .dynstr           STRTAB          00000000000001f8 0001f8 00001f 00   A 
0   0  1
  [ 4] .rela.dyn         RELA            0000000000000218 000218 000018 18   A 
2   0  8
  [ 5] .eh_frame         PROGBITS        0000000000000230 000230 000000 00   A 
0   0  8
  [ 6] .data.rel.ro      PROGBITS        0000000000200f00 000f00 000008 00  WA 
0   0 32
  [ 7] .dynamic          DYNAMIC         0000000000200f08 000f08 0000e0 10  WA 
3   0  8
  [ 8] .comment          PROGBITS        0000000000000000 000fe8 00002c 01  MS 
0   0  1
  [ 9] .shstrtab         STRTAB          0000000000000000 001014 000064 00     
0   0  1
  [10] .symtab           SYMTAB          0000000000000000 001378 0001b0 18    
11  16  8
  [11] .strtab           STRTAB          0000000000000000 001528 000042 00     
0   0  1
Key to Flags:
  W (write), A (alloc), X (execute), M (merge), S (strings), l (large)
  I (info), L (link order), G (group), T (TLS), E (exclude), x (unknown)
  O (extra OS processing required) o (OS specific), p (processor specific)

Elf file type is DYN (Shared object file)
Entry point 0x0
There are 4 program headers, starting at offset 64

Program Headers:
  Type           Offset   VirtAddr           PhysAddr           FileSiz  MemSiz
  Flg Align
  LOAD           0x000000 0x0000000000000000 0x0000000000000000 0x000230
0x000230 R   0x200000
  LOAD           0x000f00 0x0000000000200f00 0x0000000000200f00 0x0000e8
0x0000e8 RW  0x200000
  DYNAMIC        0x000f08 0x0000000000200f08 0x0000000000200f08 0x0000e0
0x0000e0 RW  0x8
  GNU_STACK      0x000000 0x0000000000000000 0x0000000000000000 0x000000
0x000000 RW  0x10

 Section to Segment mapping:
  Segment Sections...
   00     .hash .dynsym .dynstr .rela.dyn 
   01     .data.rel.ro .dynamic 
   02     .dynamic 
   03     
address@hidden relro-6]$

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