diff --git a/test/large_array_growth.c b/test/large_array_growth.c
index dfa61a0..09f89c5 100644
--- a/test/large_array_growth.c
+++ b/test/large_array_growth.c
@@ -1,8 +1,9 @@
 #include <stdlib.h>
 #include <string.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "test_util.h"
+
+OPTNONE int main(void) {
     void *p = NULL;
     size_t size = 256 * 1024;
 
diff --git a/test/mallinfo.c b/test/mallinfo.c
index 2fc5246..dc96670 100644
--- a/test/mallinfo.c
+++ b/test/mallinfo.c
@@ -1,7 +1,10 @@
+#include <stdio.h>
+
 #include <malloc.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "test_util.h"
+
+OPTNONE int main(void) {
     malloc(1024 * 1024 * 1024);
     malloc(16);
     malloc(32);
diff --git a/test/malloc_info.c b/test/malloc_info.c
index c1590af..62a315f 100644
--- a/test/malloc_info.c
+++ b/test/malloc_info.c
@@ -1,16 +1,18 @@
 #include <pthread.h>
+#include <stdio.h>
 
 #include <malloc.h>
 
-__attribute__((optimize(0)))
-void leak_memory(void) {
+#include "test_util.h"
+
+OPTNONE static void leak_memory(void) {
     (void)malloc(1024 * 1024 * 1024);
     (void)malloc(16);
     (void)malloc(32);
     (void)malloc(4096);
 }
 
-void *do_work(void *p) {
+static void *do_work(void *p) {
     leak_memory();
     return NULL;
 }
diff --git a/test/simple-memory-corruption/delete_type_size_mismatch.cc b/test/simple-memory-corruption/delete_type_size_mismatch.cc
index a3b13b4..ffbb731 100644
--- a/test/simple-memory-corruption/delete_type_size_mismatch.cc
+++ b/test/simple-memory-corruption/delete_type_size_mismatch.cc
@@ -1,11 +1,12 @@
 #include <stdint.h>
 
+#include "../test_util.h"
+
 struct foo {
     uint64_t a, b, c, d;
 };
 
-__attribute__((optimize(0)))
-int main(void) {
+OPTNONE int main(void) {
     void *p = new char;
     struct foo *c = (struct foo *)p;
     delete c;
diff --git a/test/simple-memory-corruption/double_free_large.c b/test/simple-memory-corruption/double_free_large.c
index ce4850d..0c7412b 100644
--- a/test/simple-memory-corruption/double_free_large.c
+++ b/test/simple-memory-corruption/double_free_large.c
@@ -1,7 +1,8 @@
 #include <stdlib.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     void *p = malloc(128 * 1024);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/double_free_large_delayed.c b/test/simple-memory-corruption/double_free_large_delayed.c
index b448ea9..f367590 100644
--- a/test/simple-memory-corruption/double_free_large_delayed.c
+++ b/test/simple-memory-corruption/double_free_large_delayed.c
@@ -1,7 +1,8 @@
 #include <stdlib.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     void *p = malloc(128 * 1024);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/double_free_small.c b/test/simple-memory-corruption/double_free_small.c
index 399b8d0..4635d36 100644
--- a/test/simple-memory-corruption/double_free_small.c
+++ b/test/simple-memory-corruption/double_free_small.c
@@ -1,7 +1,8 @@
 #include <stdlib.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     void *p = malloc(16);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/double_free_small_delayed.c b/test/simple-memory-corruption/double_free_small_delayed.c
index 63d8586..acb4034 100644
--- a/test/simple-memory-corruption/double_free_small_delayed.c
+++ b/test/simple-memory-corruption/double_free_small_delayed.c
@@ -1,7 +1,8 @@
 #include <stdlib.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     void *p = malloc(16);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/eight_byte_overflow_large.c b/test/simple-memory-corruption/eight_byte_overflow_large.c
index afb25b8..3b8c8d3 100644
--- a/test/simple-memory-corruption/eight_byte_overflow_large.c
+++ b/test/simple-memory-corruption/eight_byte_overflow_large.c
@@ -1,7 +1,8 @@
 #include <stdlib.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     char *p = malloc(256 * 1024);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/eight_byte_overflow_small.c b/test/simple-memory-corruption/eight_byte_overflow_small.c
index 6270ac3..0ac796b 100644
--- a/test/simple-memory-corruption/eight_byte_overflow_small.c
+++ b/test/simple-memory-corruption/eight_byte_overflow_small.c
@@ -1,7 +1,8 @@
 #include <stdlib.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     char *p = malloc(8);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/invalid_free_protected.c b/test/simple-memory-corruption/invalid_free_protected.c
index 97d5be1..ee81467 100644
--- a/test/simple-memory-corruption/invalid_free_protected.c
+++ b/test/simple-memory-corruption/invalid_free_protected.c
@@ -2,8 +2,9 @@
 
 #include <sys/mman.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     free(malloc(16));
     char *p = mmap(NULL, 4096 * 16, PROT_NONE, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
     if (p == MAP_FAILED) {
diff --git a/test/simple-memory-corruption/invalid_free_small_region.c b/test/simple-memory-corruption/invalid_free_small_region.c
index d7f9321..4993724 100644
--- a/test/simple-memory-corruption/invalid_free_small_region.c
+++ b/test/simple-memory-corruption/invalid_free_small_region.c
@@ -1,7 +1,8 @@
 #include <stdlib.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     char *p = malloc(16);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/invalid_free_small_region_far.c b/test/simple-memory-corruption/invalid_free_small_region_far.c
index 4a7ed29..c147ef3 100644
--- a/test/simple-memory-corruption/invalid_free_small_region_far.c
+++ b/test/simple-memory-corruption/invalid_free_small_region_far.c
@@ -1,7 +1,8 @@
 #include <stdlib.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     char *p = malloc(16);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/invalid_free_unprotected.c b/test/simple-memory-corruption/invalid_free_unprotected.c
index 01fc630..c583c6b 100644
--- a/test/simple-memory-corruption/invalid_free_unprotected.c
+++ b/test/simple-memory-corruption/invalid_free_unprotected.c
@@ -2,8 +2,9 @@
 
 #include <sys/mman.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     free(malloc(16));
     char *p = mmap(NULL, 4096 * 16, PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
     if (p == MAP_FAILED) {
diff --git a/test/simple-memory-corruption/invalid_malloc_usable_size_small.c b/test/simple-memory-corruption/invalid_malloc_usable_size_small.c
index 3a155b2..f200564 100644
--- a/test/simple-memory-corruption/invalid_malloc_usable_size_small.c
+++ b/test/simple-memory-corruption/invalid_malloc_usable_size_small.c
@@ -1,7 +1,8 @@
 #include <malloc.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     char *p = malloc(16);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/invalid_malloc_usable_size_small_quarantine.c b/test/simple-memory-corruption/invalid_malloc_usable_size_small_quarantine.c
index 5a8f3ea..ae0a8c6 100644
--- a/test/simple-memory-corruption/invalid_malloc_usable_size_small_quarantine.c
+++ b/test/simple-memory-corruption/invalid_malloc_usable_size_small_quarantine.c
@@ -1,7 +1,8 @@
 #include <malloc.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     void *p = malloc(16);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/malloc_object_size.c b/test/simple-memory-corruption/malloc_object_size.c
index 630134d..04e6350 100644
--- a/test/simple-memory-corruption/malloc_object_size.c
+++ b/test/simple-memory-corruption/malloc_object_size.c
@@ -1,10 +1,11 @@
 #include <stdbool.h>
 #include <malloc.h>
 
+#include "../test_util.h"
+
 size_t malloc_object_size(void *ptr);
 
-__attribute__((optimize(0)))
-int main(void) {
+OPTNONE int main(void) {
     char *p = malloc(16);
     size_t size = malloc_object_size(p);
     return size != (SLAB_CANARY ? 24 : 32);
diff --git a/test/simple-memory-corruption/malloc_object_size_offset.c b/test/simple-memory-corruption/malloc_object_size_offset.c
index 3d389a0..2bc16b6 100644
--- a/test/simple-memory-corruption/malloc_object_size_offset.c
+++ b/test/simple-memory-corruption/malloc_object_size_offset.c
@@ -1,10 +1,11 @@
 #include <stdbool.h>
 #include <malloc.h>
 
+#include "../test_util.h"
+
 size_t malloc_object_size(void *ptr);
 
-__attribute__((optimize(0)))
-int main(void) {
+OPTNONE int main(void) {
     char *p = malloc(16);
     size_t size = malloc_object_size(p + 5);
     return size != (SLAB_CANARY ? 19 : 27);
diff --git a/test/simple-memory-corruption/read_after_free_large.c b/test/simple-memory-corruption/read_after_free_large.c
index 81e8628..b5e611c 100644
--- a/test/simple-memory-corruption/read_after_free_large.c
+++ b/test/simple-memory-corruption/read_after_free_large.c
@@ -2,8 +2,9 @@
 #include <stdlib.h>
 #include <string.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     char *p = malloc(128 * 1024);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/read_after_free_small.c b/test/simple-memory-corruption/read_after_free_small.c
index cc4d154..7d53e5c 100644
--- a/test/simple-memory-corruption/read_after_free_small.c
+++ b/test/simple-memory-corruption/read_after_free_small.c
@@ -2,8 +2,9 @@
 #include <stdlib.h>
 #include <string.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     char *p = malloc(16);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/read_zero_size.c b/test/simple-memory-corruption/read_zero_size.c
index 7e6ed78..385f4d6 100644
--- a/test/simple-memory-corruption/read_zero_size.c
+++ b/test/simple-memory-corruption/read_zero_size.c
@@ -1,8 +1,9 @@
 #include <stdlib.h>
 #include <stdio.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     char *p = malloc(0);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/string_overflow.c b/test/simple-memory-corruption/string_overflow.c
index fe89fa5..7f54a63 100644
--- a/test/simple-memory-corruption/string_overflow.c
+++ b/test/simple-memory-corruption/string_overflow.c
@@ -4,8 +4,9 @@
 
 #include <malloc.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     char *p = malloc(16);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/unaligned_free_large.c b/test/simple-memory-corruption/unaligned_free_large.c
index 3bee868..10c7874 100644
--- a/test/simple-memory-corruption/unaligned_free_large.c
+++ b/test/simple-memory-corruption/unaligned_free_large.c
@@ -1,7 +1,8 @@
 #include <stdlib.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     char *p = malloc(128 * 1024);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/unaligned_free_small.c b/test/simple-memory-corruption/unaligned_free_small.c
index bf80307..1b2a7fc 100644
--- a/test/simple-memory-corruption/unaligned_free_small.c
+++ b/test/simple-memory-corruption/unaligned_free_small.c
@@ -1,7 +1,8 @@
 #include <stdlib.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     char *p = malloc(16);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/unaligned_malloc_usable_size_small.c b/test/simple-memory-corruption/unaligned_malloc_usable_size_small.c
index 89397af..2bbbf8a 100644
--- a/test/simple-memory-corruption/unaligned_malloc_usable_size_small.c
+++ b/test/simple-memory-corruption/unaligned_malloc_usable_size_small.c
@@ -1,7 +1,8 @@
 #include <malloc.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     char *p = malloc(16);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/uninitialized_free.c b/test/simple-memory-corruption/uninitialized_free.c
index 0028be9..9e3c8b9 100644
--- a/test/simple-memory-corruption/uninitialized_free.c
+++ b/test/simple-memory-corruption/uninitialized_free.c
@@ -1,7 +1,8 @@
 #include <stdlib.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     free((void *)1);
     return 0;
 }
diff --git a/test/simple-memory-corruption/uninitialized_malloc_usable_size.c b/test/simple-memory-corruption/uninitialized_malloc_usable_size.c
index 3b2924f..d0644c4 100644
--- a/test/simple-memory-corruption/uninitialized_malloc_usable_size.c
+++ b/test/simple-memory-corruption/uninitialized_malloc_usable_size.c
@@ -1,7 +1,8 @@
 #include <malloc.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     malloc_usable_size((void *)1);
     return 0;
 }
diff --git a/test/simple-memory-corruption/uninitialized_realloc.c b/test/simple-memory-corruption/uninitialized_realloc.c
index e0dc09a..4afc9de 100644
--- a/test/simple-memory-corruption/uninitialized_realloc.c
+++ b/test/simple-memory-corruption/uninitialized_realloc.c
@@ -1,7 +1,8 @@
 #include <stdlib.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     void *p = realloc((void *)1, 16);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/write_after_free_large.c b/test/simple-memory-corruption/write_after_free_large.c
index ce4c691..d46cc0d 100644
--- a/test/simple-memory-corruption/write_after_free_large.c
+++ b/test/simple-memory-corruption/write_after_free_large.c
@@ -1,8 +1,9 @@
 #include <stdlib.h>
 #include <string.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     char *p = malloc(128 * 1024);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/write_after_free_large_reuse.c b/test/simple-memory-corruption/write_after_free_large_reuse.c
index c32e77b..3af225e 100644
--- a/test/simple-memory-corruption/write_after_free_large_reuse.c
+++ b/test/simple-memory-corruption/write_after_free_large_reuse.c
@@ -1,8 +1,9 @@
 #include <stdlib.h>
 #include <string.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     char *p = malloc(128 * 1024);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/write_after_free_small.c b/test/simple-memory-corruption/write_after_free_small.c
index 2a80835..c78325e 100644
--- a/test/simple-memory-corruption/write_after_free_small.c
+++ b/test/simple-memory-corruption/write_after_free_small.c
@@ -1,8 +1,9 @@
 #include <stdlib.h>
 #include <string.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     char *p = malloc(128);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/write_after_free_small_reuse.c b/test/simple-memory-corruption/write_after_free_small_reuse.c
index ca6564e..315407a 100644
--- a/test/simple-memory-corruption/write_after_free_small_reuse.c
+++ b/test/simple-memory-corruption/write_after_free_small_reuse.c
@@ -1,8 +1,9 @@
 #include <stdlib.h>
 #include <string.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     char *p = malloc(128);
     if (!p) {
         return 1;
diff --git a/test/simple-memory-corruption/write_zero_size.c b/test/simple-memory-corruption/write_zero_size.c
index def29b5..3687bf9 100644
--- a/test/simple-memory-corruption/write_zero_size.c
+++ b/test/simple-memory-corruption/write_zero_size.c
@@ -1,8 +1,9 @@
 #include <stdlib.h>
 #include <stdio.h>
 
-__attribute__((optimize(0)))
-int main(void) {
+#include "../test_util.h"
+
+OPTNONE int main(void) {
     char *p = malloc(0);
     if (!p) {
         return 1;
diff --git a/test/test_util.h b/test/test_util.h
new file mode 100644
index 0000000..d2d78a6
--- /dev/null
+++ b/test/test_util.h
@@ -0,0 +1,10 @@
+#ifndef TEST_UTIL_H
+#define TEST_UTIL_H
+
+#ifdef __clang__
+#define OPTNONE __attribute__((optnone))
+#else
+#define OPTNONE __attribute__((optimize(0)))
+#endif
+
+#endif