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</o:shapelayout></xml><![endif]--></head><body lang=EN-IE link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>I am in the process of updating from using Newlib v2.2.0-20150423 for our common C library with LLVM to v2.5.0 and this is breaking LibC++. Both LibC++ v3.9 and what is currently at head are affected.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>There are some general problems with Locales, and in particular the definition of the type ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>locale_t</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’ which is defined in Newlib’s ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>sys/_locale.h</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’ as:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New";color:black'>typedef struct __locale_t *locale_t;<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>and in LibC++’s ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>support/xlocale/__nop_locale_mgmt.h</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’ as:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New";color:black'>typedef void *locale_t;<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>But it is also running into another problem with ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>vasprintf</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’. In LibC++ this is referenced in ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>__bsd_locale_fallbacks.h</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’, but ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>vasprintf</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’ is not an ISO C function, and the newer version of Newlib has the declaration in ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'><stdio.h></span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’ guarded with ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>__GNU_VISIBLE</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’ to keep it out of the global namespace, thus:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New";color:black'>#if __GNU_VISIBLE<o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New";color:black'>int _EXFUN(asprintf, (char **__restrict, const char *__restrict, ...)<o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New";color:black'> _ATTRIBUTE ((__format__ (__printf__, 2, 3))));<o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New";color:black'>int _EXFUN(vasprintf, (char **, const char *, __VALIST)<o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New";color:black'> _ATTRIBUTE ((__format__ (__printf__, 2, 0))));<o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New";color:black'>#endif<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>I don’t know which version of Newlib changed the declaration of ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>vasprintf</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’, but the current LibC++ does not seem to handle the change. Should I be building LibC++ with ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>__GNU_VISIBLE</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’ defined? Any recommendations for how I should resolve the multiple definition of ‘</span><span style='font-size:12.0pt;font-family:"Courier New";color:black'>locale_t</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>’?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'>Thanks,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif;color:black'> MartinO<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Courier New";color:black'><o:p> </o:p></span></p></div></body></html>