[Bug ld/12975] New: --gc-sections doesn't remove symbols hidden with version scripts

[mh-sourceware at glandium dot org]

http://sourceware.org/bugzilla/show_bug.cgi?id=12975

           Summary: --gc-sections doesn't remove symbols hidden with
                    version scripts
           Product: binutils
           Version: 2.21
            Status: NEW
          Severity: normal
          Priority: P2
         Component: ld
        AssignedTo: address@hidden
        ReportedBy: address@hidden


(This applies to both ld and gold)

Take the following source code as test.c:
-----8<-----
int foo() { return 42; }

int bar() { return 0; }

#pragma GCC visibility push(hidden)
int baz() { return 1; }
#pragma GCC visibility pop
----->8-----

Take the following version script as ver:
-----8<-----
{
global:
  foo;
local:
  *;
};
----->8-----

Build with:
gcc -o test.so -shared test.c -Wl,--gc-sections -ffunction-sections
-Wl,--version-script,ver

The baz function, hidden with visibility, is removed from the resulting
test.so, but not bar, as one could expect, since it's effectively hidden
through the version script.

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