bug#18743: 25.0.50; Clang 3.0 fails to compile src/fns.c, GCC 4.8 cannot dump emacs

[Peter Dyballa]

Am 6.12.2017 um 19:13 schrieb Richard Stallman:

> Can you analyze the problem dumping with GCC 4.8?

Configure has no problem with GIF and JPEG, but build fails with:

        "../../src/bootstrap-emacs" -batch --no-site-file --no-site-lisp -f 
batch-byte-compile uvs.el
        Fatal error 6: Abort trap
        Backtrace:
        0   bootstrap-emacs                     0x0000000100155ca1 
emacs_backtrace + 105
        1   bootstrap-emacs                     0x000000010012f79c 
terminate_due_to_signal + 129
        2   bootstrap-emacs                     0x0000000100155653 
deliver_fatal_signal + 0
        3   bootstrap-emacs                     0x0000000100155628 
deliver_thread_signal + 146
        4   bootstrap-emacs                     0x000000010015568d 
deliver_fatal_thread_signal + 28
        5   libSystem.B.dylib                   0x00007fff813de1ba _sigtramp + 
26
        6   bootstrap-emacs                     0x000000010306b39a 
next_release_must_exit + 43910710
        7   libSystem.B.dylib                   0x00007fff81384195 free + 128
        8   bootstrap-emacs                     0x00000001002828c4 rpl_putenv + 
329
        9   bootstrap-emacs                     0x00000001001a84cc xputenv + 24
        10  bootstrap-emacs                     0x00000001001c0f73 
set_time_zone_rule + 280
        11  bootstrap-emacs                     0x00000001001bc5ae init_editfns 
+ 162
        12  bootstrap-emacs                     0x00000001001310b1 main + 4273
        13  bootstrap-emacs                     0x000000010000253c start + 52

Dumping succeeded before, of course, here and also with GCC 5 and 6. The recent 
version of GCC 4.8 is 4.8.5. Historically it could have been the same version 
(release date: June 23, 2015), but I have no proof.

One more difference is that MacPorts has changed. The reason is different C++ 
ABIs and inability to pass things between different versions (not my field of 
interest). On my Snow Leopard system I have to use a special one (don't know 
the details), switch happened in summer.

Original Mac OS X 10.6.8 supports Clang 3.0 and GCC 4.2.

--
Greetings

  Pete

Wasting time is an important part of living.