Issue #21213 has been updated by nobu (Nobuyoshi Nakada). Status changed from Open to Third Party's Issue It is a bug of Visual C 17.3.5 and has been fixed by preview versions. ---------------------------------------- Bug #21213: [BUG] heap_idx_for_size: allocation size too large (size=145u, heap_idx=146u) https://bugs.ruby-lang.org/issues/21213#change-112531 * Author: jjs008 (小龙 江) * Status: Third Party's Issue * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN ---------------------------------------- Failed to build ruby 3.4.2 after upgrade Visual C++ build Tools from 17.2 to 17.3.5. The logging file is as attachment. Use this build script https://github.com/jiangjianshan/msvc-pkg/blob/main/packages/ruby/build.bat and it work before upgrade Visual C++ toolsets. ---Files-------------------------------- ruby.txt (3.84 KB) -- https://bugs.ruby-lang.org/