Ruby » Ruby master

Bug #2127

Updated by ioquatix (Samuel Williams) almost 3 years ago

 =begin 
  Hi, 
 
  I am using ruby 1.9.2dev (2009-09-14 trunk 24923) [i686-linux]. 
 
  Both Fiber#resume and rb_fiber_resume() are causing a segfault 
  when called from inside a very simple C extension (see below). 
 
  Thanks for your consideration. 
 
 ``` 
  
 
  ############################################################### 
  # ls 
  ############################################################### 
 
  extconf.rb    main.c 
 
  ############################################################### 
  # cat extconf.rb  
  ############################################################### 
 
  require 'mkmf' 
 
  have_library('ruby-static', 'ruby_init') || 
  have_library('ruby', 'ruby_init') 
 
  create_makefile('main') 
 
  ############################################################### 
  # cat main.c 
  ############################################################### 
 
  #include <stdio.h> 
  #include <ruby.h> 
 
  VALUE body(VALUE arg) 
  { 
      printf("Fiber: Inside fiber body");  
      fflush(stdout); 
      return Qnil; 
  } 
 
  RUBY_GLOBAL_SETUP 
 
  int main(int argc, char** argv) 
  { 
      ruby_sysinit(&argc, &argv); 
      RUBY_INIT_STACK; 
      ruby_init(); 
 
      printf("Main: Creating Ruby fiber...");  
      fflush(stdout); 
      VALUE fib = rb_fiber_new(body, Qnil); 
 
      VALUE dump = rb_inspect(fib); 
      rb_io_puts(1, &dump, rb_stdout); 
 
      printf("Main: Going to resume fiber...\n");  
      fflush(stdout); 
 
      rb_funcall(fib, rb_intern("resume"), 0); /* <== SEGFAULT */ 
 
      printf("Main: Fiber resumed successfully.\n"); 
      fflush(stdout); 
 
      return ruby_cleanup(0); 
  } 
 
  ############################################################### 
  # ruby -v extconf.rb  
  ############################################################### 
 
  ruby 1.9.2dev (2009-09-14 trunk 24923) [i686-linux] 
  checking for ruby_init() in -lruby-static... yes 
  creating Makefile 
 
  ############################################################### 
  # sed -i 's,-shared,,g' Makefile ; make 
  ############################################################### 
 
  gcc -I. -I/home/sun/app/ruby-1.9-git/include/ruby-1.9.1/i686-linux -I/home/sun/app/ruby-1.9-git/include/ruby-1.9.1/ruby/backward -I/home/sun/app/ruby-1.9-git/include/ruby-1.9.1 -I. -D_FILE_OFFSET_BITS=64    -fPIC -g    -o main.o -c main.c 
  gcc    -o main.so main.o -L. -L/home/sun/app/ruby-1.9-git/lib -Wl,-R/home/sun/app/ruby-1.9-git/lib -L.    -rdynamic -Wl,-export-dynamic      -lruby-static    -lpthread -lrt -ldl -lcrypt -lm     -lc 
 
  ############################################################### 
  # ./main.so 
  ############################################################### 
 
  Main: Creating Ruby fiber...#<Fiber:0x8a5938c> 
  Main: Going to resume fiber... 
  [BUG] Segmentation fault 
  ruby 1.9.2dev (2009-09-14 trunk 24923) [i686-linux] 
 
  -- control frame ---------- 
  c:0001 p:---- s:0001 b:-001 l:000000 d:000000 ------ 
  --------------------------- 
 
  fish: Job 1, “./main.so” terminated by signal SIGSEGV (Address boundary error) 
 
  #################################################### 
  # gdb main.so core  
  #################################################### 
 
  GNU gdb 6.8 
  [...] 
  Core was generated by `./main.so'. 
  Program terminated with signal 11, Segmentation fault. 
  [New process 8635] 
  [New process 8636] 
  #0    0xb7c539be in uw_frame_state_for () from /usr/lib/libgcc_s.so.1 
 
  (gdb) bt full 
  #0    0xb7c539be in uw_frame_state_for () from /usr/lib/libgcc_s.so.1 
  No symbol table info available. 
  #1    0xb7c54011 in _Unwind_Backtrace () from /usr/lib/libgcc_s.so.1 
  No symbol table info available. 
  #2    0xb7ddf405 in backtrace () from /lib/libc.so.6 
  No symbol table info available. 
  #3    0x08141c33 in rb_vm_bugreport () at vm_dump.c:598 
 	 trace = {0x8141c33, 0x816fb60, 0x816fbba, 0x80e386e, 0xb7ee740c, 0x0 <repeats 1019 times>} 
 	 n = -1209027184 
 	 syms = (char **) 0xb7d4630f 
 	 i = -1209789088 
  #4    0x0816fb60 in report_bug (file=0x0, line=0, fmt=0x819a2e3 "Segmentation fault",  
      args=0x8aa97d4 "\236é\031k") at error.c:215 
 	 buf = '\0' <repeats 8176 times>, "\230\227ª\bcè\023\b\2102£\b\230~¬\b" 
 	 out = (FILE *) 0xb7e41560 
 	 len = 0 
  #5    0x0816fbba in rb_bug (fmt=0x819a2e3 "Segmentation fault") at error.c:232 
 	 args = 0x8aa97d4 "\236é\031k" 
  #6    0x080e386e in sigsegv (sig=11, info=0x8aa980c, ctx=0x8aa988c) at signal.c:616 
 	 th = (rb_thread_t *) 0x8a33288 
  #7    <signal handler called> 
  No symbol table info available. 
  #8    0x6b19e99e in ?? () 
  No symbol table info available. 
 ``` 
 
 =end 

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