Issue #6333 has been reported by raylinn / gmail.com (ray linn).

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Bug #6333: Ruby 1.9.3 (P0, P125,P194) Segmentation fault when compiled with GCC 4.7.0
https://bugs.ruby-lang.org/issues/6333

Author: raylinn / gmail.com (ray linn)
Status: Open
Priority: Urgent
Assignee: 
Category: 
Target version: 
ruby -v: ruby 1.9.3p194 (2012-04-20) [x64-mingw32]


Compiled Ruby 1.9.3 with GCC 4.7.0 (MinGW64) , when miniruby.exe execute ./win32/mkexports.rb, Segmentation fault occurs, the error message is as following:

        CC = gcc
        LD = ld
        LDSHARED = gcc -shared
        CFLAGS = -Ofast -I/usr/local/include
        XCFLAGS = -include ruby/config.h -include ruby/missing.h -fvisibility=hi
dden -DRUBY_EXPORT
        CPPFLAGS = -I/usr/local/icnlude -Ofast   -I. -I.ext/include/x64-mingw32
-I./include -I.
        DLDFLAGS = -Wl,--enable-auto-image-base,--enable-auto-import -Wl,--out-i
mplib=libx64-msvcrt-ruby191.dll.a x64-msvcrt-ruby191.def
        SOLIBS = x64-msvcrt-ruby191.res.o -lshell32 -lws2_32 -limagehlp
generating x64-msvcrt-ruby191.def
./win32/mkexports.rb:143: [BUG] Segmentation fault
ruby 1.9.3p194 (2012-04-20) [x64-mingw32]

-- Control frame information -----------------------------------------------
c:td p:---- s:td b:td l:td d:td CFUNC  :foreach
c:td p:td s:td b:td l:td d:td METHOD ./win32/mkexports.rb:143
c:td p:td s:td b:td l:td d:td METHOD ./win32/mkexports.rb:85
c:td p:td s:td b:td l:tx d:tx METHOD ./win32/mkexports.rb:150
c:td p:td s:td b:td l:td d:td METHOD ./win32/mkexports.rb:159
c:td p:td s:td b:td l:tx d:tx METHOD ./win32/mkexports.rb:40
c:td p:---- s:td b:td l:td d:td FINISH
c:td p:---- s:td b:td l:td d:td CFUNC  :new
c:td p:td s:td b:td l:td d:td METHOD ./win32/mkexports.rb:21
c:td p:td s:td b:td l:td d:td METHOD ./win32/mkexports.rb:25
c:td p:td s:td b:td l:tx d:td BLOCK  ./win32/mkexports.rb:166
c:td p:---- s:td b:td l:td d:td FINISH
c:td p:td s:td b:td l:tx d:tx TOP

-- Ruby level backtrace information ----------------------------------------
./win32/mkexports.rb:166:in `block in <main>'
./win32/mkexports.rb:25:in `extract'
./win32/mkexports.rb:21:in `create'
./win32/mkexports.rb:21:in `new'
./win32/mkexports.rb:40:in `initialize'
./win32/mkexports.rb:159:in `each_export'
./win32/mkexports.rb:150:in `each_export'
./win32/mkexports.rb:85:in `objdump'
./win32/mkexports.rb:143:in `each_line'
./win32/mkexports.rb:143:in `foreach'

-- C level backtrace information -------------------------------------------
C:\windows\SYSTEM32\ntdll.dll(NtWaitForSingleObject+0xa) [0x0000000077B3135A]
C:\windows\system32\KERNELBASE.dll(WaitForSingleObjectEx+0x9c) [0x000007FEFE0310
DC]
 [0x000000000056A574]
 [0x000000000043FAEB]
 [0x0000000000440996]
 [0x00000000004F7BA4]
 [0x0000000000587275]
C:\windows\SYSTEM32\ntdll.dll(_C_specific_handler+0x9c) [0x0000000077AF85A8]
C:\windows\SYSTEM32\ntdll.dll(RtlDecodePointer+0xbd) [0x0000000077B09D0D]
C:\windows\SYSTEM32\ntdll.dll(RtlUnwindEx+0xbbf) [0x0000000077AF91AF]
C:\windows\SYSTEM32\ntdll.dll(KiUserExceptionDispatcher+0x2e) [0x0000000077B3127
8]
C:\windows\system32\msvcrt.dll(strcmp+0x43) [0x000007FEFE905963]
C:\windows\system32\msvcrt.dll(bsearch+0x89) [0x000007FEFE8F47D9]
 [0x000000000057E52B]
 [0x0000000000477E3D]
 [0x0000000000478401]
 [0x0000000000478673]
 [0x0000000000478A55]
 [0x0000000000478F43]
 [0x0000000000565ACC]
 [0x000000000055DA6A]
 [0x0000000000560B05]
 [0x0000000000561CDE]
 [0x0000000000562EEA]
 [0x0000000000496CF4]
 [0x0000000000565ACC]
 [0x000000000055DA6A]
 [0x0000000000560B05]
 [0x0000000000561827]
 [0x000000000044D5A0]
 [0x00000000004470CE]
 [0x0000000000447188]
 [0x0000000000447557]
 [0x000000000044794B]
 [0x000000000058B6B7]
 [0x00000000004013C9]
 [0x00000000004014E8]
C:\windows\system32\kernel32.dll(BaseThreadInitThunk+0xd) [0x000000007788652D]

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

* Loaded script: ./win32/mkexports.rb

* Loaded features:

    0 enumerator.so
    1 C:/msys/1.0/home/beta/ruby-1.9.3-p194/rbconfig.rb

[NOTE]
You may have encountered a bug in the Ruby interpreter or extension libraries.
Bug reports are welcome.
For details: http://www.ruby-lang.org/bugreport.html


This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
make: *** [x64-msvcrt-ruby191.def] Error 3

just make clean, and roll back the GCC to 4.6.3, recompile (just type make, no reconfiguration), then everything is ok.

change Ofast to O2, issue is still, and try P0, P125, P194, issue is the same.


-- 
http://bugs.ruby-lang.org/