Taken from the Debian 2.8.0 package.

--- weex-2.6.1.5/src/strlib.c	2003-08-18 11:52:38.000000000 +0200
+++ weex-2.8.0/src/strlib.c	2007-12-04 14:22:02.000000000 +0100
@@ -42,6 +42,8 @@
 #  define G_VA_COPY(ap1, ap2)     (*(ap1) = *(ap2))
 #  elif defined (G_VA_COPY_AS_ARRAY)
 #  define G_VA_COPY(ap1, ap2)     g_memmove ((ap1), (ap2), sizeof (va_list))
+#  elif defined (__x86_64__)
+#  define G_VA_COPY(ap1, ap2)     memmove ((ap1), (ap2), sizeof (va_list))
 #  else /* va_list is a pointer */
 #  define G_VA_COPY(ap1, ap2)     ((ap1) = (ap2))
 #  endif /* va_list is a pointer */
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<tr><td><span title='2022-01-11 11:47:42 +0530'>2022-01-11</span></td><td><a href='/guix/commit/gnu/services/ci.scm?id=c1f8dffa549edc0873c8b6956d9b288b51bea521'>services: laminar: Set LAMINAR_BIND_RPC environment variable.</a><span class='msg-avail'>...</span></td><td>Arun Isaac</td></tr>
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<tr><td><span title='2021-04-09 11:59:58 +0100'>2021-04-09</span></td><td><a href='/guix/commit/gnu/services/ci.scm?id=eda4bb4f16f74436b0caf1c584888c89b3c4c69b'>services: Add Laminar.</a><span class='msg-avail'>...</span></td><td>Christopher Baines</td></tr>