--- a/libgcc/config/i386/gthr-win32.h	2016-03-30 07:45:33.388684463 +0200
+++ b/libgcc/config/i386/gthr-win32.h	2016-03-30 15:51:24.123896436 +0200
@@ -30,7 +30,7 @@

 /* Make sure CONST_CAST2 (origin in system.h) is declared.  */
 #ifndef CONST_CAST2
-#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
+#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)X)
 #endif

 /* Windows32 threads specific definitions. The windows32 threading model
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<tr><td><span title='2020-02-14 18:33:55 +0100'>2020-02-14</span></td><td><a href='/guix/commit/gnu/packages/libffcall.scm?id=caf43fd31ef5840abc76dd3e08d13628d681d1e4'>gnu: libffcall: Update to 2.2.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/libffcall.scm (libffcall): Update to 2.2.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-02-14 18:33:55 +0100'>2020-02-14</span></td><td><a href='/guix/commit/gnu/packages/libffcall.scm?id=ac906f14bcd683c7da2f94bbbbd7ee3469f1368f'>gnu: libffcall: Do not build the static libraries.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/libffcall.scm (libffcall)[arguments]: Add #:configure-flags.
</span></span></td><td>Marius Bakke</td></tr>