[Lldb-commits] [PATCH] D98289: [lldb] 2/2: Fix DW_AT_ranges DW_FORM_sec_offset not using DW_AT_rnglists_base (used by GCC)

David Blaikie via Phabricator via lldb-commits lldb-commits at lists.llvm.org
Thu Apr 1 17:28:42 PDT 2021

dblaikie added inline comments.

Comment at: lldb/test/Shell/SymbolFile/DWARF/DW_AT_range-DW_FORM_sec_offset.s:11
+# Failure was the block range 1..2 was not printed plus:
+# error: DW_AT_range-DW_FORM_sec_offset.s.tmp {0x0000003f}: DIE has DW_AT_ranges(0xc) attribute, but range extraction failed (missing or invalid range list table), please file a bug and attach the file at the start of this error message
I'm not sure if `%t` is guaranteed to produce a file name with that format/name. So maybe using `{{.*}}` for the file name (and `{{.*}}-rnglistx` below) would be a bit more stable

Comment at: lldb/test/Shell/SymbolFile/DWARF/DW_AT_range-DW_FORM_sec_offset.s:32
+# RNGLISTBASE-LABEL: image lookup -v -s lookup_rnglists
+# RNGLISTBASE: error: DW_AT_range-DW_FORM_sec_offset.s.tmp-rnglistbase {0x00000043}: DIE has DW_AT_ranges(0x0) attribute, but range extraction failed (invalid range list table index 0), please file a bug and attach the file at the start of this error message
Perhaps this could be more informative about what makes the range list index of 0 invalid? "index 0 out of range of range list table (with range list base 0xXXX) with offset entry count of XX (valid indexes 0-(XX-1))" Maybe that's too verbose/not worth worrying about since this'll only be relevant to DWARF producers trying to debug their DWARFv5, maybe no one will ever see this message in practice. Just a thought.

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