------- Comment #3 from jmbnyc at gmail dot com 2006-08-16 02:42 ------- Subject: Re: gcc -g and shared objects
Very bizarre. I struggled with this all of last night and most of today. It is very bizarre. I am running stock RH FC5 that I installed about 4 weeks ago. I even tried -g -O and it seems that whenever gcc is passed -g then the shared library contains no loadable segments. Just for kicks, I did it again. [EMAIL PROTECTED] BUtil]$ gcc -g -fPIC t.cc -c [EMAIL PROTECTED] BUtil]$ gcc -shared -g -fPIC -o t.so.1 t.o [EMAIL PROTECTED] BUtil]$ eu-readelf -l t.so.1 Program Headers: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align NULL 0x000000 0x00000000 0x00000000 0x000000 0x000000 0x0 NULL 0x000000 0x00000000 0x00000000 0x000000 0x000000 0x0 NULL 0x000000 0x00000000 0x00000000 0x000000 0x000000 0x0 NULL 0x000000 0x00000000 0x00000000 0x000000 0x000000 0x0 NULL 0x000000 0x00000000 0x00000000 0x000000 0x000000 0x0 Section to Segment mapping: Segment Sections... 00 01 02 03 04 On 16 Aug 2006 02:25:57 -0000, pinskia at gcc dot gnu dot org <[EMAIL PROTECTED]> wrote: > > > ------- Comment #1 from pinskia at gcc dot gnu dot org 2006-08-16 02:25 > ------- > This works for me with exactly your version of GCC: > [EMAIL PROTECTED] ~]$ vi t.cc > [EMAIL PROTECTED] ~]$ gcc -g -fPIC t.cc -c > gt.cc: In destructor 'XYZ::~XYZ()': > t.cc:11: error: expected `}' at end of input > [EMAIL PROTECTED] ~]$vi t.cc > [EMAIL PROTECTED] ~]$ gcc -g -fPIC t.cc -c > [EMAIL PROTECTED] ~]$ gcc -shared -g -fPIC -o t.so.1 t.o > [EMAIL PROTECTED] ~]$ readelf -l t.so.1 > > Elf file type is DYN (Shared object file) > Entry point 0x6c0 > There are 5 program headers, starting at offset 52 > > Program Headers: > Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align > LOAD 0x000000 0x00000000 0x00000000 0x00ac4 0x00ac4 R E 0x1000 > LOAD 0x000ac4 0x00001ac4 0x00001ac4 0x00124 0x0012c RW 0x1000 > DYNAMIC 0x000ae0 0x00001ae0 0x00001ae0 0x000c0 0x000c0 RW 0x4 > GNU_EH_FRAME 0x00099c 0x0000099c 0x0000099c 0x00044 0x00044 R 0x4 > GNU_STACK 0x000000 0x00000000 0x00000000 0x00000 0x00000 RW 0x4 > > Section to Segment mapping: > Segment Sections... > 00 .hash .dynsym .dynstr .gnu.version .gnu.version_r .rel.dyn .rel.plt > .init .plt .text .fini .rodata .eh_frame_hdr .eh_frame > 01 .ctors .dtors .jcr .data.rel.ro .dynamic .got .got.plt .data .bss > 02 .dynamic > 03 .eh_frame_hdr > 04 > [EMAIL PROTECTED] ~]$ gcc -v > Using built-in specs. > Target: i386-redhat-linux > Configured with: ../configure --prefix=/usr --mandir=/usr/share/man > --infodir=/usr/share/info --enable-shared --enable-threads=posix > --enable-checking=release --with-system-zlib --enable-__cxa_atexit > --disable-libunwind-exceptions --enable-libgcj-multifile > --enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk > --disable-dssi --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre > --with-cpu=generic --host=i386-redhat-linux > Thread model: posix > gcc version 4.1.1 20060525 (Red Hat 4.1.1-1) > > > -- > > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28746 > > ------- You are receiving this mail because: ------- > You are on the CC list for the bug, or are watching someone who is. > You reported the bug, or are watching the reporter. > -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28746
