add todo #88997

Author: nickdesaulniers

libc/include/pthread.h.def

@@ -11,6 +11,9 @@
 
 #include "__llvm-libc-common.h"
 
+// TODO: move to a pthreads-macros.h file:
+// https://github.com/llvm/llvm-project/issues/88997
+
 #define PTHREAD_STACK_MIN (1 << 14) // 16KB
 
 #define PTHREAD_MUTEX_INITIALIZER {0}