dump_syms crashes on Qt6 .debug files with DWARF assertion failure

[vadi2]

Package: mingw-w64-x86_64-breakpad-git

Problem: dump_syms crashes when parsing Qt6 .debug files from mingw-w64-x86_64-qt6-base-debug package.

Error:

Assertion failed: size == 4 || size == 8, file src/common/dwarf/bytereader.cc, line 58

To reproduce:

pacman -S mingw-w64-x86_64-breakpad-git mingw-w64-x86_64-qt6-base-debug
dump_syms /mingw64/bin/Qt6Core.debug

Environment:

• MSYS2 MINGW64
• breakpad-git r1680.70914b2d-2
• qt6-base-debug 6.10.1-3

The .debug files are valid (Qt6Core.debug is ~198MB), but dump_syms can't parse the DWARF format. Possibly a DWARF5 compatibility issue.