[GitHub] [incubator-nuttx] gustavonihei commented on pull request #5767: arch:lib_atomic: remove and fix gcc warning `declaration-mismatch`

[GitBox <gi...@apache.org>]

gustavonihei commented on pull request #5767:
URL: https://github.com/apache/incubator-nuttx/pull/5767#issuecomment-1070969552


   > ```
   >  Error: machine/arch_atomic.c:37:8: error: conflicting types for built-in function '__atomic_store_1'; expected 'void(volatile void *, unsigned char,  int)' [-Werror=builtin-declaration-mismatch]
   >    37 |   void __atomic_store_ ## n (type *ptr,                   \
   >       |        ^~~~~~~~~~~~~~~
   > machine/arch_atomic.c:185:1: note: in expansion of macro 'STORE'
   >   185 | STORE(1, uint8_t)
   >       | ^~~~~
   > ```
   > 
   > Seems like GCC is expecting `void __atomic_store_n (void *ptr, type val, int memorder)` despite documentation states `void __atomic_store_n (type *ptr, type val, int memorder);`.
   
   It seems that the newer GCC versions have changed the prototype.
   I've just tested `esp32c3-devkit:nsh` with `riscv64-unknown-elf-gcc` version **10.2** and it also reported the same warning.


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