diff --git a/libc/include/bits/fortify/fcntl.h b/libc/include/bits/fortify/fcntl.h
index 6d90341..75cd4f2 100644
--- a/libc/include/bits/fortify/fcntl.h
+++ b/libc/include/bits/fortify/fcntl.h
@@ -98,7 +98,7 @@
 __errordecl(__creat_too_many_args, __open_too_many_args_error);
 
 #if __ANDROID_API__ >= __ANDROID_API_J_MR1__
-__BIONIC_FORTIFY_INLINE
+__BIONIC_FORTIFY_VARIADIC
 int open(const char* pathname, int flags, ...) {
     if (__builtin_constant_p(flags)) {
         if (__open_modes_useful(flags) && __builtin_va_arg_pack_len() == 0) {
@@ -117,7 +117,7 @@
     return __open_real(pathname, flags, __builtin_va_arg_pack());
 }
 
-__BIONIC_FORTIFY_INLINE
+__BIONIC_FORTIFY_VARIADIC
 int openat(int dirfd, const char* pathname, int flags, ...) {
     if (__builtin_constant_p(flags)) {
         if (__open_modes_useful(flags) && __builtin_va_arg_pack_len() == 0) {
diff --git a/libc/include/bits/fortify/stdio.h b/libc/include/bits/fortify/stdio.h
index cfc78d7..6a6b433 100644
--- a/libc/include/bits/fortify/stdio.h
+++ b/libc/include/bits/fortify/stdio.h
@@ -63,8 +63,7 @@
                 "format string will always overflow destination buffer")
     __errorattr("format string will always overflow destination buffer");
 
-__BIONIC_FORTIFY_INLINE
-__printflike(3, 4)
+__BIONIC_FORTIFY_VARIADIC __printflike(3, 4)
 int snprintf(char* const __pass_object_size dest, size_t size, const char* format, ...)
         __overloadable {
     va_list va;
@@ -82,8 +81,7 @@
                 "format string will always overflow destination buffer")
     __errorattr("format string will always overflow destination buffer");
 
-__BIONIC_FORTIFY_INLINE
-__printflike(2, 3)
+__BIONIC_FORTIFY_VARIADIC __printflike(2, 3)
 int sprintf(char* const __pass_object_size dest, const char* format, ...) __overloadable {
     va_list va;
     va_start(va, format);
@@ -159,12 +157,12 @@
 
 
 #if __ANDROID_API__ >= __ANDROID_API_J_MR1__
-__BIONIC_FORTIFY_INLINE __printflike(3, 4)
+__BIONIC_FORTIFY_VARIADIC __printflike(3, 4)
 int snprintf(char* dest, size_t size, const char* format, ...) {
     return __builtin___snprintf_chk(dest, size, 0, __bos(dest), format, __builtin_va_arg_pack());
 }
 
-__BIONIC_FORTIFY_INLINE __printflike(2, 3)
+__BIONIC_FORTIFY_VARIADIC __printflike(2, 3)
 int sprintf(char* dest, const char* format, ...) {
     return __builtin___sprintf_chk(dest, 0, __bos(dest), format, __builtin_va_arg_pack());
 }
diff --git a/libc/include/sys/cdefs.h b/libc/include/sys/cdefs.h
index 3cf6723..be07007 100644
--- a/libc/include/sys/cdefs.h
+++ b/libc/include/sys/cdefs.h
@@ -300,6 +300,13 @@
  * inline` without making them available externally.
  */
 #    define __BIONIC_FORTIFY_INLINE static __inline__ __always_inline
+/*
+ * We should use __BIONIC_FORTIFY_VARIADIC instead of __BIONIC_FORTIFY_INLINE
+ * for variadic functions because compilers cannot inline them.
+ * The __always_inline attribute is useless, misleading, and could trigger
+ * clang compiler bug to incorrectly inline variadic functions.
+ */
+#    define __BIONIC_FORTIFY_VARIADIC static __inline__
 /* Error functions don't have bodies, so they can just be static. */
 #    define __BIONIC_ERROR_FUNCTION_VISIBILITY static
 #  else
@@ -311,6 +318,8 @@
 #    define __call_bypassing_fortify(fn) (fn)
 /* __BIONIC_FORTIFY_NONSTATIC_INLINE is pointless in GCC's FORTIFY */
 #    define __BIONIC_FORTIFY_INLINE extern __inline__ __always_inline __attribute__((gnu_inline)) __attribute__((__artificial__))
+/* __always_inline is probably okay and ignored by gcc in __BIONIC_FORTIFY_VARIADIC */
+#    define __BIONIC_FORTIFY_VARIADIC __BIONIC_FORTIFY_INLINE
 #  endif
 #else
 /* Further increase sharing for some inline functions */