[lldb-dev] [Bug 22177] LLD does not generate a symbol table on Windows

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Fri Jan 9 14:28:08 PST 2015


Zachary Turner <zturner at google.com> changed:

           What    |Removed                     |Added
                 CC|                            |david.majnemer at gmail.com,
                   |                            |llvmbugs at cs.uiuc.edu
          Component|All Bugs                    |All Bugs
           Assignee|lldb-dev at cs.uiuc.edu        |unassignedbugs at nondot.org
            Product|lldb                        |lld
            Summary|LLDB expression evaluator   |LLD does not generate a
                   |does not demangle C++ names |symbol table on Windows
                   |on Windows                  |

--- Comment #2 from Zachary Turner <zturner at google.com> ---
So the problem is not that it can't demangle names.  In fact, it can demangle
names just fine.  You can see it demangling main.  And if you change the
signature of main in expr_test.cpp to int main(int, char**) then you will get
this from LLDB (note that I'm using a PE file here, generated with

(lldb) file expr_test.exe
Current executable set to 'expr_test.exe' (i386).
(lldb) p main
(int (*)(int, char **)) $0 = 0x00415020

But it still can't handle foo even LLD's debug info.  The problem seems to be
that LLD isn't building the symbol table correctly.

d:\testexe>d:\src\llvm\build\ninja\bin\llvm-readobj.exe --symbols expr_test.exe

File: expr_test.exe
Format: COFF-i386
Arch: i386
AddressSize: 32bit
Symbols [

I don't know what I'm supposed to see here, but I would expect to see "main"
and "foo" in that list in some form or another.

I guess it just happens to be finding main because it's the entry point, so we
got lucky.  This sounds like an issue for someone who works on LLD.

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