Issue #15522 has been updated by vo.x (Vit Ondruch). sharkcz (Dan Hork) wrote: > I guess -nodefaultlibs should be omitted and/or -static-libgcc added. Skipping libgcc seems dangerous in general on any arch. I removed `-nodefaultlibs` and it changed nothing. But reading GCC options [1] manual, the `-nostdlib` description, it says: > In other words, when you specify -nostdlib or -nodefaultlibs you should usually specify -lgcc as well. and indeed after adding `-lgcc`, the build passed. Also, the `-lgcc` is already used in some cases [2], maybe it should be used in all cases ... [1]: https://gcc.gnu.org/onlinedocs/gcc/Link-Options.html [2]: https://github.com/ruby/ruby/blame/trunk/mjit_worker.c#L277 ---------------------------------------- Bug #15522: TestJIT#test_compile_insn_local fails on aarch64 RHEL7 https://bugs.ruby-lang.org/issues/15522#change-76249 * Author: vo.x (Vit Ondruch) * Status: Assigned * Priority: Normal * Assignee: k0kubun (Takashi Kokubun) * Target version: * ruby -v: ruby 2.6.0p0 (2018-12-25 revision 66547) [aarch64-linux] * Backport: 2.4: UNKNOWN, 2.5: UNKNOWN, 2.6: UNKNOWN ---------------------------------------- Trying to build Ruby 2.6 on RHEL7, I observe the following test failure on RHEL7, but just on aarch64. The other platforms pass just fine: ~~~ 1) Failure: TestJIT#test_compile_insn_local [/builddir/build/BUILD/ruby-2.6.0/test/ruby/test_jit.rb:64]: Expected 3 times of JIT success, but succeeded 2 times. script: ``` def foo a = 0 [1, 2].each do |i| a += i [3, 4].each do |j| a *= j end end a end print foo ``` stderr: ``` JIT success (276.6ms): foo@-e:2 -> /tmp/_ruby_mjit_p20163u0.c JIT success (347.3ms): block in foo@-e:4 -> /tmp/_ruby_mjit_p20163u1.c MJIT warning: failure in loading code from '/tmp/_ruby_mjit_p20163u2.so': /tmp/_ruby_mjit_p20163u2.so: undefined symbol: __multi3 Successful MJIT finish ``` . <3> expected but was <2>. ~~~ I suspect this must be some combination of architecture/compiler (gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-16)), because I don't observe similar issues on Fedora. ---Files-------------------------------- _ruby_mjit_p207u2.c (3.48 KB) rb_mjit_min_header-2.6.0.h (781 KB) mjit_multi3.tgz (993 KB) -- https://bugs.ruby-lang.org/ Unsubscribe: <mailto:ruby-core-request / ruby-lang.org?subject=unsubscribe> <http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>