glslang-16.5.0

[Bruce Dubbs]

New minor version.

[Joe Locash]

## 16.5.0 2026-07-31

### New Extensions

* Implement `GLSL_EXT_split_barrier` / `SPV_EXT_split_barrier`
* Implement `GLSL_QCOM_multiple_wait_queues`
* Implement `GLSL_QCOM_image_processing3`
* Implement `GL_EXT_function_control_attributes`

### API Changes

* Expose `TVarEntryInfo` as part of the public API in `ShaderLang.h`

### Bug Fixes

* Fix undefined shifts and signed overflow in `#if` expression evaluation
* Fix out-of-bounds read when indexing `idInstruction` and `idDescriptor`
* Fix null dereference in iomapper when `uniformVarMap` is empty
* Fix out-of-bounds read on empty array initializer in `convertInitializerList`
* Fix stack overflow on deeply nested macro invocations, capping macro expansion depth at 200 and emitting an error
* Fix out-of-bounds read in `handlePragma` when `#pragma STDGL` has fewer than 4 tokens
* Fix crash in preprocessor output when a backslash-newline continuation appears at end of input due to column underflow
* Fix crash on excess `#endif` directives when a malformed `#if` expression desynchronizes `elseSeen`/`ifdepth` preprocessor counters
* Fix out-of-bounds write in `memberRemapper` for nested `buffer_reference` blocks
* Fix out-of-bounds read on long vector index in `checkIndex`

### Other

* Update SPIR-V size optimization and HLSL legalization pass lists to match spirv-tools, and add performance optimization option
* Increase `input_attachment_index` limit to `INT_MAX`
* Print compile and link error logs to stderr instead of stdout

Fixed at efa1f40a4f.