Bug#1115241: libsigc++-3.0-0 has executable stack on hppa

[Mattias Ellert]

Package: libsigc++-3.0-0
Version: 3.6.0-2
Severity: normal
User: debian-hppa at lists.debian.org
Usertags: hppa
X-Debbugs-CC: debian-hppa at lists.debian.org
Control: affects -1 src:nordugrid-arc

The nordugrid-arc package FTBFS on hppa because the python bindings can
not be loaded during testing due to libsigc++-3.0-0 having an
executable stack on this architecture:

(sid_hppa-dchroot)ellert at panama:~/arc/nordugrid-arc-7.1.0/python/test/python$ PYTHONPATH=../../python:../../python/arc/.libs python3 
Python 3.13.7 (main, Aug 20 2025, 22:17:40) [GCC 14.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import _arc
Traceback (most recent call last):
  File "<python-input-0>", line 1, in <module>
    import _arc
ImportError: libsigc-3.0.so.0: cannot enable executable stack as shared object requires: Invalid argument

This can also be seen using readelf.

$ readelf -l /usr/lib/hppa-linux-gnu/libsigc-3.0.so.0.0.0

Elf file type is DYN (Shared object file)
Entry point 0x0
There are 6 program headers, starting at offset 52

Program Headers:
  Type           Offset   VirtAddr   PhysAddr   FileSiz MemSiz  Flg Align
  LOAD           0x000000 0x00000000 0x00000000 0x0bf21 0x0bf21 R E 0x1000
  LOAD           0x00c000 0x0000c000 0x0000c000 0x00600 0x0060c RWE 0x1000
  DYNAMIC        0x00c164 0x0000c164 0x0000c164 0x000f8 0x000f8 RW  0x4
  NOTE           0x0000f4 0x000000f4 0x000000f4 0x00024 0x00024 R   0x4
  GNU_EH_FRAME   0x00ad38 0x0000ad38 0x0000ad38 0x0034c 0x0034c R   0x4
  GNU_STACK      0x000000 0x00000000 0x00000000 0x00000 0x00000 RWE 0x10

 Section to Segment mapping:
  Segment Sections...
   00     .note.gnu.build-id .gnu.hash .dynsym .dynstr .gnu.version .gnu.version_r .rela.dyn .rela.plt .init .text .fini .rodata .PARISC.unwind .eh_frame_hdr .eh_frame .gcc_except_table 
   01     .init_array .fini_array .data.rel.ro .dynamic .data .plt .got .bss 
   02     .dynamic 
   03     .note.gnu.build-id 
   04     .eh_frame_hdr 
   05     

$ dpkg -S /usr/lib/hppa-linux-gnu/libsigc-3.0.so.0.0.0 
libsigc++-3.0-0:hppa: /usr/lib/hppa-linux-gnu/libsigc-3.0.so.0.0.0


Compare ro e.g. x86_64 where the stack is not market RWE, but only RW:

$ readelf -l /usr/lib/x86_64-linux-gnu/libsigc-3.0.so.0.0.0 

Elf-filtyp är DYN (delad objektfil)
Ingångspunkt 0x0
Det finns 9 programhuvuden, med början på avståndet 64

Programhuvuden:
  Typ            Offset             VirtAdr            FysAdr
                 FilStrl            MinneStrl           Flagg  Just
  LOAD           0x0000000000000000 0x0000000000000000 0x0000000000000000
                 0x0000000000003ac0 0x0000000000003ac0  R      0x1000
  LOAD           0x0000000000004000 0x0000000000004000 0x0000000000004000
                 0x0000000000003605 0x0000000000003605  R E    0x1000
  LOAD           0x0000000000008000 0x0000000000008000 0x0000000000008000
                 0x00000000000018c4 0x00000000000018c4  R      0x1000
  LOAD           0x0000000000009a48 0x000000000000aa48 0x000000000000aa48
                 0x00000000000005d0 0x00000000000005d8  RW     0x1000
  DYNAMIC        0x0000000000009b98 0x000000000000ab98 0x000000000000ab98
                 0x0000000000000210 0x0000000000000210  RW     0x8
  NOTE           0x0000000000000238 0x0000000000000238 0x0000000000000238
                 0x0000000000000024 0x0000000000000024  R      0x4
  GNU_EH_FRAME   0x00000000000081b8 0x00000000000081b8 0x00000000000081b8
                 0x00000000000003fc 0x00000000000003fc  R      0x4
  GNU_STACK      0x0000000000000000 0x0000000000000000 0x0000000000000000
                 0x0000000000000000 0x0000000000000000  RW     0x10
  GNU_RELRO      0x0000000000009a48 0x000000000000aa48 0x000000000000aa48
                 0x00000000000005b8 0x00000000000005b8  R      0x1

 Sektion till segment-avbildning:
  Segmentsektioner...
   00     .note.gnu.build-id .gnu.hash .dynsym .dynstr .gnu.version .gnu.version_r .rela.dyn .rela.plt 
   01     .init .plt .plt.got .text .fini 
   02     .rodata .eh_frame_hdr .eh_frame .gcc_except_table 
   03     .init_array .fini_array .data.rel.ro .dynamic .got .data .bss 
   04     .dynamic 
   05     .note.gnu.build-id 
   06     .eh_frame_hdr 
   07     
   08     .init_array .fini_array .data.rel.ro .dynamic .got 


Mattias Ellert
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