Matthias, thanks for testing the expression code!
At this point, the expression parser is too rudimentary to have (interesting) compiler-specific bugs :) We're retooling it to use LLVM IR and the JIT as opposed to the current, AST-based mechanism which handles C/C++ constructs and types on a case-by-case basis. This will make it much more general. Once that functionality gets in, I would welcome any problem reports you can provide. So in summary, it's not a simple problem, and evaluating expressions in general is fundamentally broken in various ways. But we're working on it. Sean On Jul 21, 2010, at 10:16 AM, Matthias Neeracher wrote: > While "variable list" works when debugging my gcc compiled program, I'm not > having much luck using "expression". No matter what expression I try, as soon > as I refer to any variables, I get something like: > > error: couldn't evaluate DWARF expression: DW_OP_APPLE_extern(0) opcode > encountered with no decl map. > > Simple stuff like "expr 1+1" works, though. > > Is evaluating expressions in gcc (as opposed to llvm-gcc or clang), compiled > code fundamentally broken, or is this likely to be a simple problem that > would be reasonably easy for me to trace down (I'm getting somewhat > comfortable running lldb under gdb by now ;-) ? > > Matthias > > > _______________________________________________ > lldb-dev mailing list > [email protected] > http://lists.cs.uiuc.edu/mailman/listinfo/lldb-dev _______________________________________________ lldb-dev mailing list [email protected] http://lists.cs.uiuc.edu/mailman/listinfo/lldb-dev
