> >> IIUC if we want tree-sitter to use our malloc, we need to build it with Emacs, where should I put the source of tree-sitter? > > tree-sitter itself should be a library we link against. If you meant > the tree-sitter support code, then it should go on a separate file in > src/. Or did I misunderstand your question? If we link against libtree-sitter, how do we change its malloc behavior? Tree-sitter has these kind of things: #ifndef ts_malloc #define ts_malloc ts_malloc_default #endif So I assume we need to define ts_malloc to, say, xmalloc when compiling libtree-sitter. And if we only link to it, we can’t redefine ts_malloc. Yuan