On Sat, Sep 13, 2003 at 12:43:38PM -0400, Rolf Campbell wrote: >Christopher Faylor wrote: > >>On Sat, Sep 13, 2003 at 12:20:39PM -0400, Rolf Campbell wrote: >> >>>Is this new gcc supposed to be ABI compatible with 3.2.x? Because I >>>can't link in libraries compiled with an older version of cygwin g++. >>> >>>/c/temp/cppunit-1.8.0/src/cppunit/TestSucessListener.cpp: undefined >>>reference to `___gxx_personality_v0' >>>/c/temp/cppunit-1.8.0/src/cppunit/../../include/cppunit/TestListener.h:33: >>>undefined reference to `__Unwind_Resume' >> >>Apparently not. >> >Ok, let me rephrase: Do you consider this a problem worth fixing?
gcc 3.2-3 used Dwarf2 exceptions, which worked most of the time. (In fact, I don't recall any bug reports at all on cygwin list). But it didn't work with w32api callbacks, nor with some combinations of compiler switches (notably -mcpu=i586 or -mno-accumulate-outgoing-args and -fomit-frame-pointer). cygwin gcc-3.3.1 uses setjmp-longjmp exception mechanism, mingw does too and has done since gcc-3.2.1. The two undefined references are Dwarf2 specific. The corresponding SjLj symbols are __gxx_personality_sj0 and __Unwind_SjLj_Resume. Danny http://search.yahoo.com.au - Yahoo! Search - Looking for more? Try the new Yahoo! Search -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
