Bug #18049


Cannot build ruby-3.0.2 on NetBSD

Added by sydofficious (Kenneth Dunlap) 10 months ago. Updated 10 months ago.

Target version:


I get random segfaults when attempting to build on NetBSD

uname -a
NetBSD 9.1 NetBSD 9.1 (PANIX-STD) #2: Thu Mar 18 17:46:23 EDT 2021 amd64

Configuration summary for ruby version 3.0.2

   * Installation prefix: /usr/local
   * exec prefix:         ${prefix}
   * arch:                x86_64-netbsd9.1
   * site arch:           ${arch}
   * RUBY_BASE_NAME:      ruby
   * enable shared:       yes
   * ruby lib prefix:     ${libdir}/${RUBY_BASE_NAME}
   * site libraries path: ${rubylibprefix}/${sitearch}
   * vendor path:         ${rubylibprefix}/vendor_ruby
   * target OS:           netbsd9.1
   * compiler:            gcc
   * with pthread:        yes
   * with coroutine:      ucontext
   * enable shared libs:  yes
   * dynamic library ext: so
   * CFLAGS:              ${optflags} ${debugflags} ${warnflags}
   * LDFLAGS:             -L. -fstack-protector-strong -Wl,-export-dynamic
   * DLDFLAGS:            -Wl,--compress-debug-sections=zlib
   * optflags:            -O3
   * debugflags:          -ggdb3
   * warnflags:           -Wall -Wextra -Wdeprecated-declarations\
                          -Wduplicated-cond -Wimplicit-function-declaration\
                          -Wimplicit-int -Wmisleading-indentation\
                          -Wpointer-arith -Wwrite-strings\
                          -Wimplicit-fallthrough=0 -Wmissing-noreturn\
                          -Wno-constant-logical-operand -Wno-long-long\
                          -Wno-parentheses-equality -Wno-self-assign\
                          -Wno-tautological-compare -Wno-unused-parameter\
                          -Wno-unused-value -Wsuggest-attribute=format\
                          -Wsuggest-attribute=noreturn -Wunused-variable
   * strip command:       strip -S -x
   * install doc:         no
   * JIT support:         yes
   * man page type:       man
   * BASERUBY -v:         ruby 3.0.1p64 (2021-04-05 revision 0fb782ee38)\

        BASERUBY = /usr/local/bin/ruby --disable=gems
        CC = gcc
        LD = ld
        LDSHARED = gcc -shared
        CFLAGS = -O3 -ggdb3 -Wall -Wextra -Wdeprecated-declarations -Wduplicated-cond -Wimplicit-function-declaration -Wimplicit-int -Wmisleading-indentation -Wpointer-arith -Wwrite-strings -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 -std=gnu99  -fPIC -pipe
        XCFLAGS = -D_FORTIFY_SOURCE=2 -fstack-protector-strong -fno-strict-overflow -fvisibility=hidden -fexcess-precision=standard -DRUBY_EXPORT -I. -I.ext/include/x86_64-netbsd9.1 -I./include -I. -I./enc/unicode/12.1.0
        CPPFLAGS =
        DLDFLAGS = -Wl,--compress-debug-sections=zlib -Wl,-soname,  -fstack-protector-strong
        SOLIBS = -lexecinfo -lz -lpthread -lrt -lrt -lcrypt -lm
        LANG = en_US.UTF-8
        LC_ALL =
        LC_CTYPE =
        MFLAGS =
gcc (nb4 20200810) 7.5.0

This particular time, it segfaulted here:

making prelude.rbinc
/usr/local/lib/ruby/3.0.0/ripper/lexer.rb:70: [BUG] Segmentation fault
ruby 3.0.1p64 (2021-04-05 revision 0fb782ee38) [x86_64-netbsd9.1]

-- Control frame information -----------------------------------------------
c:0009 p:---- s:0037 e:000036 CFUNC  :new
c:0008 p:0043 s:0028 e:000027 CLASS  /usr/local/lib/ruby/3.0.0/ripper/lexer.rb:70
c:0007 p:0042 s:0025 e:000024 CLASS  /usr/local/lib/ruby/3.0.0/ripper/lexer.rb:55
c:0006 p:0013 s:0022 e:000021 TOP    /usr/local/lib/ruby/3.0.0/ripper/lexer.rb:14 [FINISH]
c:0005 p:---- s:0019 e:000018 CFUNC  :require
c:0004 p:0011 s:0014 e:000013 TOP    /usr/local/lib/ruby/3.0.0/ripper.rb:3 [FINISH]
c:0003 p:---- s:0011 e:000010 CFUNC  :require
c:0002 p:0005 s:0006 e:000005 EVAL   ./tool/mk_builtin_loader.rb:3 [FINISH]
c:0001 p:0000 s:0003 E:001d70 (none) [FINISH]

-- Ruby level backtrace information ----------------------------------------
./tool/mk_builtin_loader.rb:3:in `<main>'
./tool/mk_builtin_loader.rb:3:in `require'
/usr/local/lib/ruby/3.0.0/ripper.rb:3:in `<top (required)>'
/usr/local/lib/ruby/3.0.0/ripper.rb:3:in `require'
/usr/local/lib/ruby/3.0.0/ripper/lexer.rb:14:in `<top (required)>'
/usr/local/lib/ruby/3.0.0/ripper/lexer.rb:55:in `<class:Ripper>'
/usr/local/lib/ruby/3.0.0/ripper/lexer.rb:70:in `<class:Lexer>'
/usr/local/lib/ruby/3.0.0/ripper/lexer.rb:70:in `new'

-- C level backtrace information -------------------------------------------
/usr/local/lib/ [0x79baa3ee2399]
/usr/local/lib/ [0x79baa3ee243e]
/usr/local/lib/ [0x79baa3cc3211]
/usr/local/lib/ [0x79baa3e2eb49]
/usr/lib/ [0x79baa1aa1d50]

-- Other runtime information -----------------------------------------------

* Loaded script: ./tool/mk_builtin_loader.rb

* Loaded features:

    1 thread.rb
    4 ruby2_keywords.rb
    5 /usr/local/lib/ruby/3.0.0/x86_64-netbsd9.1/enc/
    6 /usr/local/lib/ruby/3.0.0/x86_64-netbsd9.1/enc/trans/
    7 /usr/local/lib/ruby/3.0.0/x86_64-netbsd9.1/
    8 /usr/local/lib/ruby/3.0.0/ripper/core.rb

gmake: *** [Makefile:1833: prelude.rbinc] Abort trap (core dumped)

Other times it will segfault in other places. It seems pretty random.

Related issues 1 (1 open0 closed)

Has duplicate Ruby master - Bug #18050: Cannot build ruby-2.7.4 on NetBSDOpenActions

Updated by xtkoba (Tee KOBAYASHI) 10 months ago

First, it should be clarified that it is the already installed /usr/local/bin/ruby (version 3.0.1p64) that segfaults here.

I guess that the source comes directly from a Git repository, as prelude.rbinc should be prebuilt in a release tarball which should be tried out for self-containedness.

To avoid using already installed Ruby interpreters try adding the option --with-baseruby=no to ./configure.

Updated by sydofficious (Kenneth Dunlap) 10 months ago

This turned out to be an issue with miniruby when the NetBSD kernel has PaX ASLR (Address Space Layout Randomization) enabled. The following patch, applied post-configure, works around the problem.

--- Makefile.orig     2021-07-28 13:31:38.018160281 -0400
+++ Makefile    2021-07-28 13:37:35.292884198 -0400
@@ -270,6 +270,7 @@
                $(ECHO) linking $@
                $(Q) $(POSTLINK)
+               paxctl +a $@

                @$(RM) $@
Actions #3

Updated by nobu (Nobuyoshi Nakada) 10 months ago

  • Has duplicate Bug #18050: Cannot build ruby-2.7.4 on NetBSD added
Actions #4

Updated by nobu (Nobuyoshi Nakada) 10 months ago

  • Description updated (diff)

Updated by nobu (Nobuyoshi Nakada) 10 months ago

Does this work?

diff --git a/ b/
index d018e8a6f4f..2d91972c218 100644
--- a/
+++ b/
@@ -1176,6 +1176,10 @@ main()
 [netbsd*], [	LIBS="-lm $LIBS"
+		AC_CHECK_PROGS(paxctl, paxctl)
+		AS_IF([test -n "$paxctl"], [
+		    POSTLINK="$paxctl +a\$@${POSTLINK:+; $POSTLINK}"
+		])
 [dragonfly*], [	LIBS="-lm $LIBS"

Updated by nobu (Nobuyoshi Nakada) 10 months ago

Maybe only miniruby needs to disable ASLR?

Actions #7

Updated by nobu (Nobuyoshi Nakada) 10 months ago

  • Status changed from Open to Feedback

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