debian/changelog

+libgzstream (1.5+dfsg-4) unstable; urgency=medium
+
+  * Adapt symbols file to 32 bit architectures
+    Closes: #912286
+
+ -- Andreas Tille <tille@debian.org>  Tue, 30 Oct 2018 07:43:22 +0100
+
 libgzstream (1.5+dfsg-3) unstable; urgency=medium
 
   * d/watch: Hopefully upstream will set release tags.

debian/libgzstream0.symbols

@@ -22,5 +22,7 @@ libgzstream.so.0 libgzstream0 #MINVER#
  _ZTT12gzstreambase@Base 1.5+dfsg
  _ZTV11gzstreambuf@Base 1.5+dfsg
  _ZTV12gzstreambase@Base 1.5+dfsg
- _ZTv0_n24_N12gzstreambaseD0Ev@Base 1.5+dfsg
- _ZTv0_n24_N12gzstreambaseD1Ev@Base 1.5+dfsg
+ (arch-bits=64)_ZTv0_n24_N12gzstreambaseD0Ev@Base 1.5+dfsg
+ (arch-bits=64)_ZTv0_n24_N12gzstreambaseD1Ev@Base 1.5+dfsg
+ (arch-bits=32)_ZTv0_n12_N12gzstreambaseD0Ev@Base 1.5+dfsg
+ (arch-bits=32)_ZTv0_n12_N12gzstreambaseD1Ev@Base 1.5+dfsg