[Bug ld/31644] [Regression] libstdc++prettyprinters/debug.[cc|cxx11.cc] failing to build - linker error

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=31644

--- Comment #12 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 15469
  --> https://sourceware.org/bugzilla/attachment.cgi?id=15469&action=edit
A testcase

[hjl@gnu-cfl-3 31644]$ make
gcc -B./ -g -flto   -c -o x.o x.c
gcc -B./ -g   -c -o foo.o foo.c
ar -rv libfoo.a foo.o
ar: creating libfoo.a
a - foo.o
gcc -B./ -g -fPIC   -c -o bar.o bar.c
gcc -B./ -shared -o libbar.so bar.o
gcc -B./  -o x x.o libfoo.a libbar.so -Wl,-R,.
./ld: libfoo.a(foo.o): in function `foo':
/export/home/hjl/bugs/binutils/31644/foo.c:6:(.text+0x5): undefined reference
to `bar'
collect2: error: ld returned 1 exit status
make: *** [Makefile:15: x] Error 1
rm foo.o
[hjl@gnu-cfl-3 31644]$ gcc -c x.c
[hjl@gnu-cfl-3 31644]$ make
gcc -B./  -o x x.o libfoo.a libbar.so -Wl,-R,.
./x
[hjl@gnu-cfl-3 31644]$

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