This release includes improvements to --map-path options for the processing
of core dump files, significant performance improvements, support for GNU
DWARF compression extensions and improved unwinding and variable resolution
accuracy. All users are recommended to upgrade.
Map Path Handling
Previously, linker entries extracted from core dump files did not respect
the --map-path option (sysroot-equivalent for GDB). This is now respected.
Performance Improvements
Line number resolution performance for certain workloads is improved by 30% to 70% through micro-optimizations to the sorting algorithm.
Unwinding and Variable Resolution Accuracy
Previously, only FORM_data and FORM_addr fields were respected for
AT_high_pc attributes, FORM_udata is also respected now. It was
possible for debug information associated with a compilation unit to be
missed if FORM_udata was used.
DWARF Compression
Support has been added for various GNU extensions (namely, FORM_GNU_ref_alt
and FORM_GNU_strp_alt) used by the dwz DWARF compression tool. These
are required by customers utilizing DWARF compression with dwz. Learn
more here.