Bug #18081: addr2line.c: Wrong section for `DW_AT_ranges`

• Status: Feedback
• Assignee: -
• Target version: -
• ruby -v: ruby 3.1.0dev (2021-08-16T00:07:09Z master 4cc44bd819) [x86_64-linux]
• Backport: 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN

[xtkoba (Tee KOBAYASHI)]

When both .debug_rnglists and .debug_ranges sections exist, DW_AT_ranges can refer to a wrong section, potentially causing a segmentation fault.

DW_AT_ranges should refer to .debug_rnglists for DWARF version 5, and .debug_ranges for DWARF version 4 and earlier.

A patch is attached to fix this.

Note that this patch will not be cleanly applied before patches posted in #17823 and #17052.

[mame (Yusuke Endoh)]

• Status changed from Open to Feedback

@xtkoba (Tee KOBAYASHI) I'm not familiar with DWARF. Could you show a reference to justify your change, for example the section of the DWARF spec that explains the spec change?