snmalloc/0.7.0 package update

[octo-sts]

[octo-sts]

Gen AI suggestions to solve the build error:

• Detected Error:

/home/build/src/snmalloc/override/memcpy.cc:8:3: error: attribute declaration must precede definition [-Werror,-Wignored-attributes]
/home/build/src/snmalloc/override/memcpy.cc:9:24: error: redefinition of a 'extern inline' function 'memcpy' is not supported in C++

• Error Category: Build Configuration

• Failure Point: Compilation of memcpy.cc during cmake/build step

• Root Cause Analysis:
The error indicates two issues:

1. Attribute declaration ordering problem with SNMALLOC_EXPORT
2. Conflict with existing memcpy definition from glibc headers

• Suggested Fix:
Add the following CMake option to disable memcpy override:

  - uses: cmake/configure
    with:
      opts: |
        -DCMAKE_BUILD_TYPE=Release \
        -DCMAKE_C_COMPILER=clang \
        -DCMAKE_CXX_COMPILER=clang++ \
        -DSNMALLOC_BUILD_TESTING=OFF \
        -DSNMALLOC_LINK_ICF=ON \
        -DSNMALLOC_IPO=ON \
        -DSNMALLOC_STATIC_LIBRARY_PREFIX= \
        -DSNMALLOC_OVERRIDE_MEMCPY=OFF

• Explanation:
The build is failing because snmalloc tries to override the memcpy function, but this conflicts with glibc's fortified memcpy implementation. Disabling the memcpy override through SNMALLOC_OVERRIDE_MEMCPY=OFF will prevent this conflict while maintaining the core allocation functionality.

• Additional Notes:

• This is a known issue when building with newer glibc versions that provide fortified string functions
• The memcpy override is not critical for the core allocator functionality
• This solution maintains compatibility while preserving security features from glibc

• References:

• [build][clang 19+] missing-template-arg-list-after-template-kw is triggered during the build microsoft/snmalloc#669 (Related discussion about LLVM/Clang compatibility)
• https://github.com/microsoft/snmalloc/blob/main/docs/CMake.md (Build configuration options)