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Re: Guile test-ffi uses an unportable assumption

From: Eli Zaretskii
Subject: Re: Guile test-ffi uses an unportable assumption
Date: Sat, 13 Aug 2016 10:33:24 +0300

> From: Mark H Weaver <address@hidden>
> Cc: Andy Wingo <address@hidden>,  address@hidden
> Date: Wed, 10 Aug 2016 04:31:15 -0400
> > However, in the case in point even compiling guile with -export-dynamic
> > won't help, because the function being used by the test, strerror,
> > comes from the C library, and is not statically linked into the guile
> > binary.  So I suggest to modify the test to use a function that is
> > part of the guile binary's own sources.
> Sounds good to me.  Here's a proposed patch.  Can you test it on MinGW
> and report back?

It still fails, see the error messages below.  I think that's
expected, since scm_c_hook_add is in libguile, which is built as a
dynamic library, so should be accessed via dl_open'ing libguile.  What
I suggested above is to access a function whose code is inside the
executable itself, i.e. some function in test-ffi-lib.c, such as

Here's the error message I got:

  In ice-9/boot-9.scm:
   160: 11 [catch #t #<catch-closure d9f670> ...]
  In unknown file:
     ?: 10 [apply-smob/1 #<catch-closure d9f670>]
  In ice-9/boot-9.scm:
    66: 9 [call-with-prompt prompt0 ...]
  In ice-9/eval.scm:
   432: 8 [eval # #]
  In ice-9/boot-9.scm:
  2404: 7 [save-module-excursion #<procedure db6c60 at ice-9/boot-9.scm:4051:3 
  4056: 6 [#<procedure db6c60 at ice-9/boot-9.scm:4051:3 ()>]
  1727: 5 [%start-stack load-stack #<procedure c9b410 at 
ice-9/boot-9.scm:4047:10 ()>]
  1732: 4 [#<procedure c10ba0 ()>]
  In unknown file:
     ?: 3 [primitive-load "d:/gnu/guile-2.0.12/test-suite/standalone/test-ffi"]
  In ice-9/eval.scm:
   453: 2 [eval # ()]
   387: 1 [eval # ()]
  In unknown file:
     ?: 0 [dynamic-func "scm_c_hook_add" #<dynamic-object #f>]

  ERROR: In procedure dynamic-func:
  ERROR: In procedure dynamic-pointer: Symbol not found: scm_c_hook_add
  FAIL: test-ffi

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