[Bug libstdc++/47753] New: Invalid 32bit libstdc++.dll.a on mingw-w64 target

[dongsheng.song at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47753

           Summary: Invalid 32bit libstdc++.dll.a on mingw-w64 target
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: dongsheng.s...@gmail.com


Before 2011-02-13, both gcc-4.5 branch and trunk is fine to build 
mingw-w64/multilib target on i686-pc-linux-gnu host.

But now the file size of 32-bit libstdc++.dll.a is very small (2260 byte),
64-bit libstdc++.dll.a is OK:

Here is gcc-4.5 branch building result:

oracle@vc:~/tmp/gcc-4.5-windows_i686-linux-obj/gcc$ ls -la
./i686-w64-mingw32/libstdc++-v3/src/.libs/libstdc++*
-rwxr-xr-x 1 oracle dba 5662948 Feb 15 21:34
./i686-w64-mingw32/libstdc++-v3/src/.libs/libstdc++-6.dll
-rw-r--r-- 1 oracle dba 8874224 Feb 15 21:34
./i686-w64-mingw32/libstdc++-v3/src/.libs/libstdc++.a
-rw-r--r-- 1 oracle dba    2260 Feb 15 21:34
./i686-w64-mingw32/libstdc++-v3/src/.libs/libstdc++.dll.a
lrwxrwxrwx 1 oracle dba      15 Feb 15 21:34
./i686-w64-mingw32/libstdc++-v3/src/.libs/libstdc++.la -> ../libstdc++.la
-rw-r--r-- 1 oracle dba     986 Feb 15 21:34
./i686-w64-mingw32/libstdc++-v3/src/.libs/libstdc++.lai
oracle@vc:~/tmp/gcc-4.5-windows_i686-linux-obj/gcc$ ls -la
./i686-w64-mingw32/64/libstdc++-v3/src/.libs/libstdc++*
-rwxr-xr-x 1 oracle dba  7226445 Feb 15 21:35
./i686-w64-mingw32/64/libstdc++-v3/src/.libs/libstdc++-6.dll
-rw-r--r-- 1 oracle dba 10478438 Feb 15 21:35
./i686-w64-mingw32/64/libstdc++-v3/src/.libs/libstdc++.a
-rw-r--r-- 1 oracle dba  2591940 Feb 15 21:35
./i686-w64-mingw32/64/libstdc++-v3/src/.libs/libstdc++.dll.a
lrwxrwxrwx 1 oracle dba       15 Feb 15 21:35
./i686-w64-mingw32/64/libstdc++-v3/src/.libs/libstdc++.la -> ../libstdc++.la
-rw-r--r-- 1 oracle dba      986 Feb 15 21:35
./i686-w64-mingw32/64/libstdc++-v3/src/.libs/libstdc++.lai


Here is gcc trunk building result:

oracle@vc:~/tmp/gcc-4.6-windows_i686-linux-obj/gcc$ ls -la
./i686-w64-mingw32/libstdc++-v3/src/.libs/libstdc++*
-rwxr-xr-x 1 oracle dba 5257378 Feb 15 21:16
./i686-w64-mingw32/libstdc++-v3/src/.libs/libstdc++-6.dll
-rw-r--r-- 1 oracle dba 8065534 Feb 15 21:16
./i686-w64-mingw32/libstdc++-v3/src/.libs/libstdc++.a
-rw-r--r-- 1 oracle dba    2260 Feb 15 21:16
./i686-w64-mingw32/libstdc++-v3/src/.libs/libstdc++.dll.a
lrwxrwxrwx 1 oracle dba      15 Feb 15 21:16
./i686-w64-mingw32/libstdc++-v3/src/.libs/libstdc++.la -> ../libstdc++.la
-rw-r--r-- 1 oracle dba     974 Feb 15 21:16
./i686-w64-mingw32/libstdc++-v3/src/.libs/libstdc++.lai
oracle@vc:~/tmp/gcc-4.6-windows_i686-linux-obj/gcc$ ls -la
./i686-w64-mingw32/64/libstdc++-v3/src/.libs/libstdc++*
-rwxr-xr-x 1 oracle dba  7228283 Feb 15 21:18
./i686-w64-mingw32/64/libstdc++-v3/src/.libs/libstdc++-6.dll
-rw-r--r-- 1 oracle dba 10777424 Feb 15 21:18
./i686-w64-mingw32/64/libstdc++-v3/src/.libs/libstdc++.a
-rw-r--r-- 1 oracle dba  2639980 Feb 15 21:18
./i686-w64-mingw32/64/libstdc++-v3/src/.libs/libstdc++.dll.a
lrwxrwxrwx 1 oracle dba       15 Feb 15 21:18
./i686-w64-mingw32/64/libstdc++-v3/src/.libs/libstdc++.la -> ../libstdc++.la
-rw-r--r-- 1 oracle dba      976 Feb 15 21:18
./i686-w64-mingw32/64/libstdc++-v3/src/.libs/libstdc++.lai

Tested with the latest binutils.