[Bug gold/25948] New: gold: in --start-group, an undefined symbol in shared object does not fetch a previous archive

[i at maskray dot me]

https://sourceware.org/bugzilla/show_bug.cgi?id=25948

            Bug ID: 25948
           Summary: gold: in --start-group, an undefined symbol in shared
                    object does not fetch a previous archive
           Product: binutils
           Version: 2.35 (HEAD)
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gold
          Assignee: ccoutant at gmail dot com
          Reporter: i at maskray dot me
                CC: ian at airs dot com
  Target Milestone: ---

as /dev/null -o a.o
echo '.globl foo; .type foo,@function; foo:' > b.s && gcc -c b.s -o b.o && ar
rc b.a b.o
echo 'call foo' > c.s && gcc -shared c.s -o c.so

# GNU ld correctly fetches b.a(b.o)
ld.bfd a.o --start-group b.a c.so --end-group -y foo
# ld.bfd: c.so: reference to foo
# ld.bfd: b.a(b.o): definition of foo

# gold incorrectly errors. It should fetch b.a(b.o)
gold a.o --start-group b.a c.so --end-group -y foo
# c.so: reference to foo
# c.so: error: undefined reference to 'foo'

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