diff --git a/examples/examples.mk b/examples/examples.mk
index 006ce46f6..04e858620 100644
--- a/examples/examples.mk
+++ b/examples/examples.mk
@@ -131,10 +131,6 @@ o/$(MODE)/examples/nesemu1.com.dbg:				\
 		$(APE)
 	@$(APELINK)
 
-o/$(MODE)/examples/loader.o:					\
-		OVERRIDE_CCFLAGS +=				\
-			-fno-record-gcc-switches
-
 o/$(MODE)/examples/loader.elf:					\
 		o/$(MODE)/examples/loader.o			\
 		examples/loader.lds
diff --git a/examples/loader.c b/examples/loader.c
index 382c89e51..1a9136165 100644
--- a/examples/loader.c
+++ b/examples/loader.c
@@ -43,7 +43,7 @@ asm(".globl\t_start\n\t"
     "mov\t%rsp,%rdi\n\t"
     "jmp\tloader");
 
-static noasan noubsan void spawn(long *sp, char *b) {
+static noinstrument noasan noubsan void spawn(long *sp, char *b) {
   struct Elf64_Ehdr *e;
   struct Elf64_Phdr *h;
   e = (void *)b;
@@ -61,7 +61,7 @@ static noasan noubsan void spawn(long *sp, char *b) {
   }
 }
 
-noasan noubsan void loader(long *sp) {
+noinstrument noasan noubsan void loader(long *sp) {
   struct stat st;
   int c, i, fd, argc;
   char *b, *p, *q, **argv;
diff --git a/libc/calls/fstatat-sysv.c b/libc/calls/fstatat-sysv.c
index dceac5c93..594ef7df5 100644
--- a/libc/calls/fstatat-sysv.c
+++ b/libc/calls/fstatat-sysv.c
@@ -33,7 +33,7 @@ int32_t sys_fstatat(int32_t dirfd, const char *path, struct stat *st,
   if (IsAsan() && !__asan_is_valid(path, 1)) return efault();
   if (IsLinux()) {
     _Static_assert(sizeof(*st) == sizeof(ms.linux), "assumption broken");
-    if (IsAsan() && !__asan_is_valid(st, sizeof(*st))) return efault();
+    if (IsAsan() && (st && !__asan_is_valid(st, sizeof(*st)))) return efault();
     p = st;
   } else if (st) {
     p = &ms;
diff --git a/third_party/python/Objects/abstract.c b/third_party/python/Objects/abstract.c
index 248297746..6a00635d8 100644
--- a/third_party/python/Objects/abstract.c
+++ b/third_party/python/Objects/abstract.c
@@ -2210,9 +2210,8 @@ PyObject_CallObject(PyObject *o, PyObject *a)
     return PyEval_CallObjectWithKeywords(o, a, NULL);
 }
 
-#ifdef MODE_DBG
 PyObject*
-_Py_CheckFunctionResult(PyObject *func, PyObject *result, const char *where)
+(_Py_CheckFunctionResult)(PyObject *func, PyObject *result, const char *where)
 {
     int err_occurred = (PyErr_Occurred() != NULL);
 
@@ -2258,7 +2257,6 @@ _Py_CheckFunctionResult(PyObject *func, PyObject *result, const char *where)
     }
     return result;
 }
-#endif
 
 PyObject *
 PyObject_Call(PyObject *func, PyObject *args, PyObject *kwargs)
diff --git a/third_party/sqlite3/shell.c b/third_party/sqlite3/shell.c
index 6d5f4f185..e062d456a 100644
--- a/third_party/sqlite3/shell.c
+++ b/third_party/sqlite3/shell.c
@@ -90,6 +90,7 @@
 #include "libc/stdio/stdio.h"
 #include "libc/str/str.h"
 #include "libc/calls/calls.h"
+#include "libc/calls/struct/stat.macros.h"
 #include "third_party/sqlite3/sqlite3.h"
 
 typedef sqlite3_int64 i64;