Hi! This is something that has popped up in a number of LLVM patch reviews, and is something that we would like to get some help with clarifying.
For DWARF[345], may a DWARF Expression (described in section 2.5) contain any of the operations listed under the Location Descriptions section (2.6)? For example, may a DW_AT_call_value in DWARF5, which "is a DWARF expression", contain any of those operations (e.g. a DW_OP_piece)? DWARF5 section 2.5 specifies the following for the operations under section 2.6: "In addition to the general operations that are defined here, operations that are specific to location descriptions are defined in Section 2.6 on page 38." Reading section 2.5 and 2.6, I have interpreted the standard as if DWARF Expressions and Location Descriptions are disparate things; Location Descriptions may describe locations _using_ DWARF Expressions, but in places where a DWARF Expression is expected, you may not have a Location Description in its place. Is that correct? Given the above quote, and if my interpretation of how DWARF Expressions and Location Descriptions correlate is correct, I would assume that the answer to this mail's initial question is no. Or am I overlooking somethere here? Best regards, David _______________________________________________ Dwarf-Discuss mailing list Dwarf-Discuss@lists.dwarfstd.org http://lists.dwarfstd.org/listinfo.cgi/dwarf-discuss-dwarfstd.org
