[Bug preprocessor/58370] pre compiled headers failure on NetBSD/sparc64

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58370
Bug 58370 depends on bug 58397, which changed state.

Bug 58397 Summary: Please add host_hooks for NetBSD to make precompiled headers 
work
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58397

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution|--- |FIXED

[Bug preprocessor/58370] pre compiled headers failure on NetBSD/sparc64

[martin at netbsd dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58370

--- Comment #4 from Martin Husemann martin at netbsd dot org ---
To avoid confusion, I'm splitting this into two separate reports - will dig
further into the crash myself, since it is probably not easy to reproduce on
other host platforms.

[Bug preprocessor/58370] pre compiled headers failure on NetBSD/sparc64

[martin at netbsd dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58370

--- Comment #1 from Martin Husemann martin at netbsd dot org ---
The fatal error seems to happen because NetBSD uses the default HAVE_MMAP_FILE
implementation of gt_pch_get_address and gt_pch_use_address instead of specific
host hooks.

Looking at the existing host hook implementations for those two functions I am
really terrified. Why is relocation not possible?

[Bug preprocessor/58370] pre compiled headers failure on NetBSD/sparc64

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58370

--- Comment #2 from Richard Biener rguenth at gcc dot gnu.org ---
(In reply to Martin Husemann from comment #1)
 The fatal error seems to happen because NetBSD uses the default
 HAVE_MMAP_FILE implementation of gt_pch_get_address and gt_pch_use_address
 instead of specific host hooks.
 
 Looking at the existing host hook implementations for those two functions I
 am really terrified. Why is relocation not possible?

Probably because nobody submitted and tested a NetBSD implementation.

[Bug preprocessor/58370] pre compiled headers failure on NetBSD/sparc64

[martin at netbsd dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58370

--- Comment #3 from Martin Husemann martin at netbsd dot org ---
(In reply to Richard Biener from comment #2)

 Probably because nobody submitted and tested a NetBSD implementation.

You mean an evil hack to try to avoid the relocation (like all existing host
hooks seem to do)?

Relocation of precompiled header information should not be host specific. With
it, any posix mmap (via the default implementation) would do.