bug#27750: i686-linux perl not reproducible

[Danny Milosavljevic]

$ guix build --rounds=2 --system=i686-linux libxext

$ diff -ru /gnu/store/y5mrlqyphzr5iqf51d7ks9ai3arhhnl2-perl-5.24.0 
/gnu/store/y5mrlqyphzr5iqf51d7ks9ai3arhhnl2-perl-5.24.0-check
diff -ru 
/gnu/store/y5mrlqyphzr5iqf51d7ks9ai3arhhnl2-perl-5.24.0/lib/perl5/5.24.0/i686-linux-thread-multi/Config_heavy.pl
 
/gnu/store/y5mrlqyphzr5iqf51d7ks9ai3arhhnl2-perl-5.24.0-check/lib/perl5/5.24.0/i686-linux-thread-multi/Config_heavy.pl
--- 
/gnu/store/y5mrlqyphzr5iqf51d7ks9ai3arhhnl2-perl-5.24.0/lib/perl5/5.24.0/i686-linux-thread-multi/Config_heavy.pl
    1970-01-01 01:00:01.000000000 +0100
+++ 
/gnu/store/y5mrlqyphzr5iqf51d7ks9ai3arhhnl2-perl-5.24.0-check/lib/perl5/5.24.0/i686-linux-thread-multi/Config_heavy.pl
      1970-01-01 01:00:01.000000000 +0100
@@ -1041,7 +1041,7 @@
 longdblinfbytes='0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0xff, 0x7f, 
0x00, 0x00'
 longdblkind='3'
 longdblmantbits='64'
-longdblnanbytes='0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0xff, 0xff, 
0xd1, 0xf7'
+longdblnanbytes='0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0xff, 0xff, 
0xce, 0xf7'
 longdblsize='12'
 longlongsize='8'
 longsize='4'
diff -ru 
/gnu/store/y5mrlqyphzr5iqf51d7ks9ai3arhhnl2-perl-5.24.0/lib/perl5/5.24.0/i686-linux-thread-multi/CORE/config.h
 
/gnu/store/y5mrlqyphzr5iqf51d7ks9ai3arhhnl2-perl-5.24.0-check/lib/perl5/5.24.0/i686-linux-thread-multi/CORE/config.h
--- 
/gnu/store/y5mrlqyphzr5iqf51d7ks9ai3arhhnl2-perl-5.24.0/lib/perl5/5.24.0/i686-linux-thread-multi/CORE/config.h
      1970-01-01 01:00:01.000000000 +0100
+++ 
/gnu/store/y5mrlqyphzr5iqf51d7ks9ai3arhhnl2-perl-5.24.0-check/lib/perl5/5.24.0/i686-linux-thread-multi/CORE/config.h
        1970-01-01 01:00:01.000000000 +0100
@@ -3890,7 +3890,7 @@
 #define DOUBLEINFBYTES  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf0, 0x7f         
/**/
 #define DOUBLENANBYTES  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff         
/**/
 #define LONGDBLINFBYTES 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0xff, 
0x7f, 0x00, 0x00         /**/
-#define LONGDBLNANBYTES 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0xff, 
0xff, 0xd1, 0xf7         /**/
+#define LONGDBLNANBYTES 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0xff, 
0xff, 0xce, 0xf7         /**/
 
 /* PERL_PRIfldbl:
  *     This symbol, if defined, contains the string used by stdio to