[Bug pch/31634] *_SECTION_ASM_OP storage has undocumented constraints

[Bug pch/31634] *_SECTION_ASM_OP storage has undocumented constraints

[amylaar at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=31634

--- Comment #4 from Jorn Wolfgang Rennecke <amylaar at gcc dot gnu.org> ---
31634 used to be relevant for ARC, but that port has since ceased to
support changing the name if TEXT_SECTION_ASM_OP etc. by command line
option, and uses now a string literal, precisely in order to work around
this bug.
Hence, this no longer blocks other/39363 .

[Bug pch/31634] *_SECTION_ASM_OP storage has undocumented constraints

[amylaar at gcc dot gnu dot org]

------- Comment #3 from amylaar at gcc dot gnu dot org  2009-03-05 00:27 -------
The patch is here:
http://gcc.gnu.org/ml/gcc-patches/2009-03/msg00243.html


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31634

[Bug pch/31634] *_SECTION_ASM_OP storage has undocumented constraints

[amylaar at gcc dot gnu dot org]

-- 

amylaar at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  BugsThisDependsOn|39302                       |
OtherBugsDependingO|                            |39363
              nThis|                            |
         AssignedTo|unassigned at gcc dot gnu   |amylaar at gcc dot gnu dot
                   |dot org                     |org
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|0                           |1
           Keywords|                            |patch
   Last reconfirmed|0000-00-00 00:00:00         |2009-03-04 21:56:38
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31634

[Bug pch/31634] *_SECTION_ASM_OP storage has undocumented constraints

[amylaar at gcc dot gnu dot org]

------- Comment #2 from amylaar at gcc dot gnu dot org  2007-05-02 13:42 -------
(In reply to comment #1)

Actually, struct unnamed_section is not suitable for garbage collected memory.
The data member is skipped, and the callback member points to a function,
which can change position when address space randomization is in effect.

I think the best solution is not to garbage collect unnamed sections.
If precompiled headers are compatible, we should be using the same set of
unnamed
sections in the compilation that uses the header as in the compilation that
created the precompiled header.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31634

[Bug pch/31634] *_SECTION_ASM_OP storage has undocumented constraints

[amylaar at gcc dot gnu dot org]

------- Comment #1 from amylaar at gcc dot gnu dot org  2007-04-19 19:27 -------
On second thought, the implementation is simpler when NULL is not treated
specially.  But then there is a slight majority of the uses in the
config directory that wants the old behaviour of get_unnamed_section,
so it makes sense to use a new name for the new function - or macro -
which does an ggc_strdup of the third argument.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31634