Libtool head: stresstest.at export of w8$ symbol

[Peter Ekberg]

Hi!

I'm trying to make sence of the problem with stresstest.at on
Windows (MinGW, Cygwin and MSVC) where the following symbols
can't be exported during linking of dlself with -export-symbols
dlselfsyms:

w1$
w3$
w4$
w5$
w6$
w7$
w8$$
w9$
w10$
w11$
w12$
w13$
w14$
w15$

I have found a fix which makes it work (not correct I think, but
attached), but I primarily wonder what the original $ sign is
doing after the w8 symbol in the dlselfsyms file (the added $
signs are there to make filtering work, but filtering does not
happen on Windows). I get the feel that the original $ is
connected to the first regexp of the sed program at the start
of the patch context, this first regexp I also don't understand.
It feels as if there is some way to encode extra (undocumented?)
information into the symfile. Please tell me what's going on
here...

I think the attached patch is not correct since on other
platforms the symbols that are not present are filtered out from
the provided symfile, while on Windows *all* symbols that are
mentioned in the provided symfile are exported without any
filtering taking place. Should the symfile be filtered on
Windows?

May I also add that it's next to impossible to deduce what's
actually going on when stresstest.at fails during the umpteenth
iteration (which happens with this patch applied, when the test
runs for *much* longer before a new different failure), without
adding some extra trace echos.

Cheers,
Peter

head-export-from-program.patch
Description: head-export-from-program.patch