[Bug ld/20104] New: error adding symbols: File format not recognized

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=20104

            Bug ID: 20104
           Summary: error adding symbols: File format not recognized
           Product: binutils
           Version: 2.27 (HEAD)
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ld
          Assignee: unassigned at sourceware dot org
          Reporter: hjl.tools at gmail dot com
  Target Milestone: ---

With clang 3.9.0 on x86-64, I got

address@hidden opt3]$ cat dummy.c
void
dummy ()
{
}
address@hidden opt3]$ cat live.c
extern void dead ();

void live()
{
  dead ();
}
address@hidden opt3]$ cat main.c
void live();

int
_start ()
{
    live();
    return 0;
}
address@hidden opt3]$ cat dead.c
void dead()
{
}
address@hidden opt3]$ make
/export/build/gnu/llvm-clang-bootstrap/stage3/build-x86_64-linux/bin/clang -c
-flto -o dummy.o dummy.c
/export/build/gnu/llvm-clang-bootstrap/stage3/build-x86_64-linux/bin/clang -c
-flto -o main.o main.c
/export/build/gnu/llvm-clang-bootstrap/stage3/build-x86_64-linux/bin/llvm-ar
scr main.a dummy.o main.o
/export/build/gnu/llvm-clang-bootstrap/stage3/build-x86_64-linux/bin/clang -c
-flto -o dead.o dead.c
/export/build/gnu/llvm-clang-bootstrap/stage3/build-x86_64-linux/bin/llvm-ar
scr dead.a dummy.o dead.o
/export/build/gnu/llvm-clang-bootstrap/stage3/build-x86_64-linux/bin/clang -c
-flto -o live.o live.c
/export/build/gnu/llvm-clang-bootstrap/stage3/build-x86_64-linux/bin/llvm-ar
scr live.a dummy.o live.o
/export/build/gnu/llvm-clang-bootstrap/stage3/build-x86_64-linux/bin/clang -O2
-nostdlib -nostartfiles -fuse-ld=bfd -flto -static -o test1 main.a dead.a
live.a
dead.a: error adding symbols: File format not recognized
clang-3.9: error: linker command failed with exit code 1 (use -v to see
invocation)
Makefile:35: recipe for target 'test1' failed
make: *** [test1] Error 1
rm live.o dummy.o main.o dead.o
address@hidden opt3]$

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