[Bug ld/12314] No LTO, LD silently links to non-IR code

[hjl.tools at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12314

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> 2011-01-23 19:12:29 
UTC ---
I checked in a different fix with commit
baf9b44566e088687f28f9fe476122876c1d2f4d.
Now you will get

/usr/gcc-4.6/bin/gcc -B./ -O -flto   -c -o bar.o bar.c
ar cr libbar.a bar.o
/usr/gcc-4.6/bin/gcc -B./ -O -flto -fuse-linker-plugin -o prog1 -L. main.c
-lbar foo.c
/tmp/cc9q7ek9.ltrans0.ltrans.o: In function `main':
cc9q7ek9.ltrans0.o:(.text+0x5): undefined reference to `bar'
collect2: ld returned 1 exit status
make: *** [prog1] Error 1

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