[Bug ld/12248] BFD linker plugin failed to resolve reference to archive

[hjl.tools at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12248

--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> 2010-11-23 23:39:05 
UTC ---
Created attachment 5136
  --> http://sourceware.org/bugzilla/attachment.cgi?id=5136
A new testcase

-pass-through is a hack, not a real solution. Here is a testcase
where __udivdi3 in div.c should override the one in libgcc.a:

address@hidden pr12245-2]$ make
/export/build/gnu/gcc/release/usr/gcc-4.6.0/bin/gcc -m32 -O2 -fwhole-program
-flto=jobserver -fuse-linker-plugin   -c -o y.o y.c
/export/build/gnu/gcc/release/usr/gcc-4.6.0/bin/gcc -m32 -O2 -fwhole-program
-flto=jobserver -fuse-linker-plugin   -c -o x.o x.c
/export/build/gnu/gcc/release/usr/gcc-4.6.0/bin/gcc -m32    -c -o div.o div.c
ar rv libdiv.a div.o
r - div.o
/export/build/gnu/gcc/release/usr/gcc-4.6.0/bin/gcc -m32 -B./ -o foo -O2
-fwhole-program -flto=jobserver -fuse-linker-plugin y.o x.o libdiv.a
./foo
2145852098
make: *** [all] Aborted
address@hidden pr12245-2]$ make clean
rm -f *.o foo a.out
address@hidden pr12245-2]$ make CFLAGS=-O3
/export/build/gnu/gcc/release/usr/gcc-4.6.0/bin/gcc -m32 -O3   -c -o y.o y.c
/export/build/gnu/gcc/release/usr/gcc-4.6.0/bin/gcc -m32 -O3   -c -o x.o x.c
/export/build/gnu/gcc/release/usr/gcc-4.6.0/bin/gcc -m32 -O3   -c -o div.o
div.c
ar rv libdiv.a div.o
r - div.o
/export/build/gnu/gcc/release/usr/gcc-4.6.0/bin/gcc -m32 -B./ -o foo -O3 y.o
x.o libdiv.a
./foo
1
address@hidden pr12245-2]$

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