[MacPorts] #56883: gdb @8.0.1: Please consider extending gdb's compiler blacklist to include Apple LLVM version 5.1 (clang-503.0.40)

[MacPorts]

#56883: gdb @8.0.1: Please consider extending gdb's compiler blacklist to include
Apple LLVM version 5.1 (clang-503.0.40)
-----------------------------------------+--------------------
 Reporter:  Hexchild                     |      Owner:  (none)
     Type:  defect                       |     Status:  new
 Priority:  Normal                       |  Milestone:
Component:  ports                        |    Version:  2.5.3
 Keywords:  gdb ada-lang segfault crash  |       Port:  gdb
-----------------------------------------+--------------------
 The clang++ binary crashes on my machine while building the gdb package.
 This issue appears to be 100% reproducible, whether or not I run "sudo
 port clean gdb".

 I have Xcode 5.1.1 on Mavericks (OSX 10.9.4):
 {{{
 $ clang++ --version
 Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
 Target: x86_64-apple-darwin13.3.0
 Thread model: posix
 }}}
 The culprit seems to be ada-lang.c (less relevant walls of text replaced
 with "..." for the sake of brevity):
 {{{
 $ cd /opt/local/var/macports/build/ ...
 _ports_devel_gdb/gdb/work/gdb-8.0.1/gdb
 $ sudo /usr/bin/clang++ ... ada-lang.c
 ...
 Stack dump:
 0.      Program arguments: ... ada-lang.c
 1.      <eof> parser at end of file
 2.      Per-module optimization passes
 3.      Running pass 'CallGraph Pass Manager' on module 'ada-lang.c'.
 4.      Running pass 'SROA' on function
 '@_ZL25ada_add_global_exceptionsP17re_pattern_bufferPP16VEC_ada_exc_info'
 clang: error: unable to execute command: Segmentation fault: 11
 ...
 }}}
 I have verified that the macports llvm-6.0 version of clang++ does not
 crash when compiling this file on my system.


 I see this was done in gdb's port file:
 {{{
 # clang 600.0.57 is known to segfault when building this
 compiler.blacklist {clang >= 600 < 601}
 }}}
 Added here:
 {{{
 commit 30580e00386a4e862a2ba6654eac4a222d0a3ded
 Author: Ryan Schmidt <ryandesign at macports.org>
 Date:   Fri Nov 17 10:58:00 2017 -0600

     gdb: Blacklist clang 600

 }}}
 I highly suspect I have the same issue but with a different LLVM version,
 however I can't be sure since I can't find a ticket for the above change.
 Regardless, the crash I'm seeing should probably be avoided.

-- 
Ticket URL: <https://trac.macports.org/ticket/56883>
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