On Sat, Sep 07, 2024 at 10:43:10AM -0700, Song Liu wrote: > clang gives the following: > > elf.c:102:1: error: unused function '__sym_remove' [-Werror,-Wunused-function] > 102 | INTERVAL_TREE_DEFINE(struct symbol, node, unsigned long, __subtree_last, > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 103 | __sym_start, __sym_last, static inline, __sym) > | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > /data/users/songliubraving/kernel/linux-git/tools/include/linux/interval_tree_generic.h:65:15: > note: expanded from macro 'INTERVAL_TREE_DEFINE' > 65 | ITSTATIC void ITPREFIX ## _remove(ITSTRUCT *node, > \ > | ^~~~~~~~~~~~~~~~~~~ > <scratch space>:155:1: note: expanded from here > 155 | __sym_remove > | ^~~~~~~~~~~~ > 1 error generated. Here's how __sym_remove() is created: #define INTERVAL_TREE_DEFINE(ITSTRUCT, ITRB, ITTYPE, ITSUBTREE, \ ITSTART, ITLAST, ITSTATIC, ITPREFIX) \ ... ITSTATIC void ITPREFIX ## _remove(ITSTRUCT *node, \ struct rb_root_cached *root) \ INTERVAL_TREE_DEFINE(struct symbol, node, unsigned long, __subtree_last, __sym_start, __sym_last, static inline, __sym) ITSTATIC is 'static inline' so it shouldn't be complaining about it being unused, right? If you add -E to the cflags to get preprocessed output, can you confirm __sym_remove() is 'static inline'? -- Josh
