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<body><span class="vcard"><a class="email" href="mailto:echristo@gmail.com" title="Eric Christopher <echristo@gmail.com>"> <span class="fn">Eric Christopher</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - LLVM creates DWARF that GDB doesn't grok: DWARF-2 expression error: DW_OP_reg operations must be used either alone or in conjuction with DW_OP_piece or DW_OP_bit_piece."
href="https://llvm.org/bugs/show_bug.cgi?id=12733">bug 12733</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
</tr></table>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - LLVM creates DWARF that GDB doesn't grok: DWARF-2 expression error: DW_OP_reg operations must be used either alone or in conjuction with DW_OP_piece or DW_OP_bit_piece."
href="https://llvm.org/bugs/show_bug.cgi?id=12733#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - LLVM creates DWARF that GDB doesn't grok: DWARF-2 expression error: DW_OP_reg operations must be used either alone or in conjuction with DW_OP_piece or DW_OP_bit_piece."
href="https://llvm.org/bugs/show_bug.cgi?id=12733">bug 12733</a>
from <span class="vcard"><a class="email" href="mailto:echristo@gmail.com" title="Eric Christopher <echristo@gmail.com>"> <span class="fn">Eric Christopher</span></a>
</span></b>
<pre>Debug info is still pretty bad for locations, but this particular bug appears
fixed:
(gdb) bt
#0 EmitOpcodePrefix (MemOperand=0, this=<optimized out>, TSFlags=<optimized
out>, CurByte=<optimized out>, MI=..., Desc=..., STI=..., OS=...)
at
/usr/local/google/home/echristo/sources/llvm/lib/Target/X86/MCTargetDesc/X86MCCodeEmitter.cpp:1131
#1 (anonymous namespace)::X86MCCodeEmitter::encodeInstruction (this=0x358bb80,
MI=..., OS=..., Fixups=..., STI=...) at
/usr/local/google/home/echristo/sources/llvm/lib/Target/X86/MCTargetDesc/X86MCCodeEmitter.cpp:1223
#2 0x00000000025d4c8d in llvm::MCObjectStreamer::EmitInstToFragment
(this=0x358bd10, Inst=..., STI=...) at
/usr/local/google/home/echristo/sources/llvm/lib/MC/MCObjectStreamer.cpp:277
#3 0x0000000001d89c6c in EmitInstruction (Inst=<error reading variable: Cannot
access memory at address 0x0>, Operands=..., Out=..., this=<optimized out>)
at
/usr/local/google/home/echristo/sources/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp:2425
#4 MatchAndEmitATTInstruction (this=<optimized out>, IDLoc=..., Operands=...,
Out=..., ErrorInfo=<optimized out>, Opcode=<optimized out>,
MatchingInlineAsm=<optimized out>)
at
/usr/local/google/home/echristo/sources/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp:2513
#5 (anonymous namespace)::X86AsmParser::MatchAndEmitInstruction
(this=0x358eda0, IDLoc=..., Opcode=<optimized out>, Operands=..., Out=...,
ErrorInfo=<optimized out>, MatchingInlineAsm=<optimized out>)
at
/usr/local/google/home/echristo/sources/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp:2436
#6 0x00000000025671ae in (anonymous namespace)::AsmParser::parseStatement
(this=<optimized out>, Info=..., SI=<optimized out>) at
/usr/local/google/home/echristo/sources/llvm/lib/MC/MCParser/AsmParser.cpp:1684
#7 0x0000000002561d1c in (anonymous namespace)::AsmParser::Run
(this=0x358ca90, NoInitialTextSection=<optimized out>, NoFinalize=false) at
/usr/local/google/home/echristo/sources/llvm/lib/MC/MCParser/AsmParser.cpp:654
#8 0x000000000071192f in ExecuteAssembler (Opts=..., Diags=...) at
/usr/local/google/home/echristo/sources/llvm/tools/clang/tools/driver/cc1as_main.cpp:417
#9 cc1as_main (Argv=..., Argv0=<optimized out>, MainAddr=0x80) at
/usr/local/google/home/echristo/sources/llvm/tools/clang/tools/driver/cc1as_main.cpp:502
#10 0x000000000071615f in ExecuteCC1Tool (Tool=..., argv=...) at
/usr/local/google/home/echristo/sources/llvm/tools/clang/tools/driver/driver.cpp:303
#11 main (argc_=<optimized out>, argv_=<optimized out>) at
/usr/local/google/home/echristo/sources/llvm/tools/clang/tools/driver/driver.cpp:366</pre>
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