Issue #19248 has been updated by vo.x (Vit Ondruch). So far, it seems the key are the compiler flags. Going with default, the test case passes, using Fedora flags, the test case fails. These are hopefully the relevant parts of the log: ~~~ ... snip ... + CFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection' + export CFLAGS + CXXFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection' + export CXXFLAGS + FFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -I/usr/lib64/gfortran/modules' + export FFLAGS + FCFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -I/usr/lib64/gfortran/modules' + export FCFLAGS + VALAFLAGS=-g + export VALAFLAGS + LDFLAGS='-Wl,-z,relro -Wl,--as-needed -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -Wl,--build-id=sha1 ' + export LDFLAGS + LT_SYS_LIBRARY_PATH=/usr/lib64: + export LT_SYS_LIBRARY_PATH + CC=gcc + export CC + CXX=g++ + export CXX ... snip ... --- Configuration summary for ruby version 3.2.0 * Installation prefix: /usr * exec prefix: /usr * arch: x86_64-linux * site arch: ${arch} * RUBY_BASE_NAME: ruby * ruby lib prefix: ${libdir}/${RUBY_BASE_NAME} * site libraries path: ${rubylibprefix}/${sitearch} * vendor path: ${rubylibprefix}/vendor_ruby * target OS: linux * compiler: gcc * with thread: pthread * with coroutine: amd64 * enable shared libs: no * dynamic library ext: so * CFLAGS: ${optflags} ${debugflags} ${warnflags} * LDFLAGS: -L. -Wl,-z,relro -Wl,--as-needed -Wl,-z,now \ -specs=/usr/lib/rpm/redhat/redhat-hardened-ld \ -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 \ -Wl,--build-id=sha1 -fstack-protector-strong \ -rdynamic -Wl,-export-dynamic * DLDFLAGS: -Wl,-z,relro -Wl,--as-needed -Wl,-z,now \ -specs=/usr/lib/rpm/redhat/redhat-hardened-ld \ -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 \ -Wl,--build-id=sha1 \ -Wl,--compress-debug-sections=zlib * optflags: -O3 -fno-fast-math * debugflags: -ggdb3 * warnflags: -Wall -Wextra -Wdeprecated-declarations \ -Wdiv-by-zero -Wduplicated-cond \ -Wimplicit-function-declaration -Wimplicit-int \ -Wmisleading-indentation -Wpointer-arith \ -Wwrite-strings -Wold-style-definition \ -Wimplicit-fallthrough=0 -Wmissing-noreturn \ -Wno-cast-function-type \ -Wno-constant-logical-operand -Wno-long-long \ -Wno-missing-field-initializers \ -Wno-overlength-strings \ -Wno-packed-bitfield-compat \ -Wno-parentheses-equality -Wno-self-assign \ -Wno-tautological-compare -Wno-unused-parameter \ -Wno-unused-value -Wsuggest-attribute=format \ -Wsuggest-attribute=noreturn -Wunused-variable \ -Wundef * strip command: strip -S -x * install doc: rdoc * MJIT support: yes * YJIT support: yes * man page type: doc --- ~/build/BUILD/ruby-3.2.0-c5eefb7f37 + popd + /usr/bin/make -O -j8 V=1 VERBOSE=1 'COPY=cp -p' -C redhat-linux-build make: Entering directory '/builddir/build/BUILD/ruby-3.2.0-c5eefb7f37/redhat-linux-build' BASERUBY = echo executable host ruby is required. use --with-baseruby option.; false CC = gcc LD = ld LDSHARED = gcc -shared CFLAGS = -O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -m64 XCFLAGS = -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fstack-protector-strong -fno-strict-overflow -fvisibility=hidden -fexcess-precision=standard -DRUBY_EXPORT -fPIE -I. -I.ext/include/x86_64-linux -I/builddir/build/BUILD/ruby-3.2.0-c5eefb7f37/include -I/builddir/build/BUILD/ruby-3.2.0-c5eefb7f37 -I/builddir/build/BUILD/ruby-3.2.0-c5eefb7f37/enc/unicode/15.0.0 CPPFLAGS = DLDFLAGS = -Wl,-z,relro -Wl,--as-needed -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -Wl,--build-id=sha1 -Wl,--compress-debug-sections=zlib -fstack-protector-strong -pie -m64 SOLIBS = yjit/target/release/libyjit.a -lz -lrt -lrt -lgmp -ldl -lcrypt -lm -lpthread LANG = C LC_ALL = LC_CTYPE = MFLAGS = -w -j8 -Otarget --jobserver-auth=4,5 RUSTC = rustc YJIT_RUSTC_ARGS = --crate-name=yjit --crate-type=staticlib --edition=2021 -g -C opt-level=3 -C overflow-checks=on '--out-dir=/builddir/build/BUILD/ruby-3.2.0-c5eefb7f37/redhat-linux-build/yjit/target/release/' /builddir/build/BUILD/ruby-3.2.0-c5eefb7f37/yjit/src/lib.rs gcc (GCC) 12.2.1 20221121 (Red Hat 12.2.1-4) Copyright (C) 2022 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ... snip ... ~~~ ---------------------------------------- Bug #19248: TestGCCompact#test_moving_objects_between_size_pools test failure https://bugs.ruby-lang.org/issues/19248#change-100782 * Author: vo.x (Vit Ondruch) * Status: Open * Priority: Normal * ruby -v: ruby 3.2.0dev (2022-12-21 master 6af6857ecf) [x86_64-linux] * Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN ---------------------------------------- Testing on Fedora Rawhide with commit:git|6af6857ecf, I observe the following error: ~~~ 1) Error: TestGCCompact#test_moving_objects_between_size_pools: NoMethodError: undefined method `>=' for nil:NilClass /builddir/build/BUILD/ruby-3.2.0-6af6857ecf/test/ruby/test_gc_compact.rb:278:in `<main>' /builddir/build/BUILD/ruby-3.2.0-6af6857ecf/test/ruby/test_gc_compact.rb:256:in `test_moving_objects_between_size_pools' /builddir/build/BUILD/ruby-3.2.0-6af6857ecf/tool/test/runner.rb:23:in `<top (required)>' /builddir/build/BUILD/ruby-3.2.0-6af6857ecf/test/runner.rb:16:in `require_relative' /builddir/build/BUILD/ruby-3.2.0-6af6857ecf/test/runner.rb:16:in `<main>' ~~~ Testing previously with commit:git|11acb7f7bc, everything was fine. I might just guess that this is related to commit:git|bfc66e07b7e0134dfa2041c311dc56941fe1caf0 -- https://bugs.ruby-lang.org/