Recent GCC builds report two warning classes in core codepaths: a
possible uninitialized read in `bound_propagator::relevant_bound`, and
repeated `-Warray-bounds` diagnostics in `mpz_manager::get_sign_cell`
when materializing small integers into a reserved `mpz_cell`.
- **Warning cleanup in bound propagation**
- Initialize `interval_size` at declaration in
`src/ast/simplifiers/bound_propagator.cpp` so the compiler can prove
safety across templated `LOWER/UPPER` instantiations using `std::clamp`.
- Preserves existing control flow and refinement heuristics (`bounded`
remains the gate for interval-based logic).
- **Warning cleanup in mpz small-value cell materialization**
- In `src/util/mpz.h`, replace direct writes through `cell->m_digits[0]`
with writes via a derived digits pointer
(`reinterpret_cast<digit_t*>(cell + 1)`), avoiding zero-length
trailing-array indexing diagnostics.
- Keeps memory layout and semantics unchanged for the stack-reserved
`sign_cell` buffer.
- **Representative change**
```cpp
cell = reserve;
cell->m_size = 1;
digit_t* cell_digits = reinterpret_cast<digit_t*>(cell + 1);
cell_digits[0] = a.value() < 0 ? -a.value() : a.value();
```
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
* Introduce X-macro-based trace tag definition
- Created trace_tags.def to centralize TRACE tag definitions
- Each tag includes a symbolic name and description
- Set up enum class TraceTag for type-safe usage in TRACE macros
* Add script to generate Markdown documentation from trace_tags.def
- Python script parses trace_tags.def and outputs trace_tags.md
* Refactor TRACE_NEW to prepend TraceTag and pass enum to is_trace_enabled
* trace: improve trace tag handling system with hierarchical tagging
- Introduce hierarchical tag-class structure: enabling a tag class activates all child tags
- Unify TRACE, STRACE, SCTRACE, and CTRACE under enum TraceTag
- Implement initial version of trace_tag.def using X(tag, tag_class, description)
(class names and descriptions to be refined in a future update)
* trace: replace all string-based TRACE tags with enum TraceTag
- Migrated all TRACE, STRACE, SCTRACE, and CTRACE macros to use enum TraceTag values instead of raw string literals
* trace : add cstring header
* trace : Add Markdown documentation generation from trace_tags.def via mk_api_doc.py
* trace : rename macro parameter 'class' to 'tag_class' and remove Unicode comment in trace_tags.h.
* trace : Add TODO comment for future implementation of tag_class activation
* trace : Disable code related to tag_class until implementation is ready (#7663).
