[Bug ld/12319] Undefined reference error with LTO and `--whole-archive'

[hjl.tools at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12319

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |WORKSFORME

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> 2010-12-14 18:13:24 
UTC ---
(In reply to comment #0)
> Created attachment 5158 [details]
> testcase
> 
> GCC 4.6.0, LD hjl/lto-mixed.
> 
> $ gcc -flto -c bar.c
> $ ar cr libbar.a bar.o
> $ gcc -flto -fuse-linker-plugin main.c -Wl,--whole-archive libbar.a
> -Wl,--no-whole-archive foo.c
> /tmp/ccacBTCT.ltrans0.ltrans.o: In function `foo.1988':
> ccacBTCT.ltrans0.o:(.text+0x14): undefined reference to `bar'
> collect2: ld returned 1 exit status

On hjl/lto-mixed branch commit 20ad3f1fe442c6378d2ad168b60dd4fbaf95d169
with gcc 4.6 revision 167368, I got

address@hidden pr12319]$ make
/usr/gcc-4.6/bin/gcc -B./ -flto   -c -o bar.o bar.c
ar cr libbar.a bar.o
/usr/gcc-4.6/bin/gcc -B./ -flto -fuse-linker-plugin -o prog  main.c \
    -Wl,--whole-archive libbar.a -Wl,--no-whole-archive foo.c
./prog
address@hidden pr12319]$ 

> $ gcc -flto -fuse-linker-plugin main.c -Wl,--whole-archive libbar.a
> -Wl,--no-whole-archive foo.c -DICE
> lto1: internal compiler error: in lto_varpool_replace_node, at 
> lto-symtab.c:306
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <http://gcc.gnu.org/bugs.html> for instructions.
> lto-wrapper: i686-pc-linux-gnu-gcc-4.6.0 returned 1 exit status

This is a GCC bug.

> /usr/local/bin/ld: lto-wrapper failed
> collect2: ld returned 1 exit status

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