```
/home/chkbuild/chkbuild/tmp/build/20200818T033004Z/ruby/test/fiber/test_backtrace.rb:9:
warning: ambiguous first argument; put parentheses or a space even after
`/' operator
/home/chkbuild/chkbuild/tmp/build/20200818T033004Z/ruby/test/fiber/test_backtrace.rb:15:
warning: ambiguous first argument; put parentheses or a space even after
`/' operator
```
```
1) Failure:
TestObjSpace#test_trace_object_allocations [/tmp/ruby/v3/src/trunk-gc_compact/test/objspace/test_objspace.rb:175]:
<nil> expected but was
<"/tmp/ruby/v3/src/trunk-gc_compact/test/objspace/test_objspace.rb">.
```
@tenderlove will re-enable it soon.
Before this commit, iclasses were "shady", or not protected by write
barriers. Because of that, the GC needs to spend more time marking these
objects than otherwise.
Applications that make heavy use of modules should see reduction in GC
time as they have a significant number of live iclasses on the heap.
- Put logic for iclass method table ownership into a function
- Remove calls to WB_UNPROTECT and insert write barriers for iclasses
This commit relies on the following invariant: for any non oirigin
iclass `I`, `RCLASS_M_TBL(I) == RCLASS_M_TBL(RBasic(I)->klass)`. This
invariant did not hold prior to 98286e9 for classes and modules that
have prepended modules.
[Feature #16984]
It's possible to define methods with any name, even if the parser
doesn't support it and it can only be used with ex. send.
This fixes an issue where invalid JSON was output from ObjectSpace.dump
when a method name needed escaping.
This reverts commit 3a4be429b5.
To fix following warning:
```
compiling ../compile.c
../compile.c:6336:20: warning: variable 'line' is uninitialized when used here [-Wuninitialized]
ADD_INSN(head, line, putnil); /* allocate stack for cached #deconstruct value */
^~~~
../compile.c:220:57: note: expanded from macro 'ADD_INSN'
ADD_ELEM((seq), (LINK_ELEMENT *) new_insn_body(iseq, (line), BIN(insn), 0))
^~~~
../compile.c:6327:13: note: initialize the variable 'line' to silence this warning
int line;
^
= 0
1 warning generated.
```
