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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'>Since updating to the LLVM v5.0 Final tag, I am seeing a crash when I enable ‘</span><span style='font-size:12.0pt;font-family:"Courier New"'>-g</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>’. With a Debug build this hits an assertion at line #923 in ‘</span><span style='font-size:12.0pt;font-family:"Courier New"'>lib/CodeGen/AsmPrinter/DwarfDebug.cpp</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>’:<o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:12.0pt;font-family:"Courier New"'>assert(EndLabel && "Forgot label after instruction ending a range!");<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>The values of related variables at this time are:<o:p></o:p></span></p><p style='mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:0cm;margin-left:27.0pt;margin-bottom:.0001pt'><span style='font-family:"Courier New";color:black'>'Begin' is: DBG_VALUE %I23, %noreg, !"fp", <!345>; line no:381<o:p></o:p></span></p><p style='mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:0cm;margin-left:27.0pt;margin-bottom:.0001pt'><span style='font-family:"Courier New";color:black'>'End' is: DBG_VALUE %I19, 88, !"ap", <!345>; line no:381 indirect<o:p></o:p></span></p><p style='mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:0cm;margin-left:27.0pt;margin-bottom:.0001pt'><span style='font-family:"Courier New";color:black'>'StartLabel' is: .Ltmp327<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'> ‘</span><span style='font-size:12.0pt;font-family:"Courier New"'>I19</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>’ is the stack-pointer, and it is the expression ‘</span><span style='font-size:12.0pt;font-family:"Courier New"'>EndLabel = getLabelAfterInsn(End)</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>’ that is returning ‘</span><span style='font-size:12.0pt;font-family:"Courier New"'>nullptr</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>’. This happens only when compiling ‘</span><span style='font-size:12.0pt;font-family:"Courier New"'>vfprintf.c</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>’ or ‘</span><span style='font-size:12.0pt;font-family:"Courier New"'>vfwprintf.c</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>’ from Newlib v2.5.0, and line #381 referenced is the location of the declaration of the function ‘</span><span style='font-size:12.0pt;font-family:"Courier New"'>_vfwprintf_r</span><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>’. But our implementation does not directly do anything with Dwarf meta-data, so I don’t understand what we could be doing that would cause this.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>Has this been seen before, and any suggestions on how I should debug this?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'>Thanks,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'> MartinO<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Book Antiqua",serif'><o:p> </o:p></span></p></div></body></html>