[ViktorBystrov72]

Source augmentation drops literal struct{} parameters because they have no stack words. A chan struct{} parameter is also displayed with an unknown element type, and treating the channel like an interface consumes the next argument's word.

Recognize literal empty struct types, render fixed empty struct arguments without consuming words, and consume one word for channel arguments. This preserves subsequent arguments in both aggregate-form and older flat-word stack traces.

Fixes #59.

Validation on Go 1.27.3:

• Regression cases and an actual Go panic failed before the change with missing empty structs, unknown channel types, and a lost following integer; they pass after it.
• Controls cover legacy string words, non-empty anonymous structs, and elided arguments.
• make fix, make verify, make test, and make test-race passed, including coverage and benchmark smoke checks.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.2%. Comparing base (496cdd2) to head (b731ac9).
⚠️ Report is 18 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##            main     #98     +/-   ##
=======================================
- Coverage   83.4%   80.2%   -3.2%     
=======================================
  Files         12      23     +11     
  Lines       2768    2269    -499     
=======================================
- Hits        2308    1819    -489     
- Misses       399     450     +51     
+ Partials      61       0     -61     

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