clayborg added a comment. BTW: is used to be that both DW_AT_low_pc and DW_AT_high_pc would be set to zero when a function was dead stripped. This was back when both the low and high pc used DW_FORM_addr (a file address). But then DWARF changed such that DW_AT_high_pc could be encoded as a data form: DW_FORM_data1, DW_FORM_data2, DW_FORM_data4, or DW_FORM_data8. This is used to mean it is an offset from the low PC. Seems the linkers now didn't have a relocation for the DW_AT_high_pc so they couldn't zero it out. This is sad because we can end up with many functions at address zero that didn't get linked, and if zero is a valid address, then our DWARF contains a bunch of useless info that only hides which function is the real function for address zero.
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