1 files changed, 51 insertions, 0 deletions
diff --git a/tests/core/test_memset.c b/tests/core/test_memset.c
new file mode 100644
index 00000000..747765f2
--- /dev/null
+++ b/tests/core/test_memset.c
@@ -0,0 +1,51 @@
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+
+#define TOTAL 10240
+
+#define TEST(size, type) { \
+  for (int i = 0; i < TOTAL; i++) { \
+    buffer[i] = i*seed; \
+  } \
+  memset(buffer+size%17, 0xA5, size); \
+  int v = 0; \
+  for (int i = 0; i < TOTAL; i++) { \
+    v += buffer[i]; \
+  } \
+  printf("final %d:%d\n", size, v); \
+}
+
+int main() {
+  #define RUN(type) \
+  { \
+    type buffer[TOTAL]; \
+    volatile int seed = 123; \
+    TEST(1, type); \
+    TEST(2, type); \
+    TEST(3, type); \
+    TEST(4, type); \
+    TEST(5, type); \
+    TEST(6, type); \
+    TEST(7, type); \
+    TEST(8, type); \
+    TEST(9, type); \
+    TEST(10, type); \
+    TEST(16, type); \
+    TEST(32, type); \
+    TEST(64, type); \
+    TEST(128, type); \
+    TEST(256, type); \
+    TEST(512, type); \
+    TEST(1024, type); \
+    for (int x = 10; x < 100; x += 10) { TEST(x, type) }; \
+  }
+  printf("8\n");
+  RUN(unsigned char);
+  printf("16\n");
+  RUN(unsigned short);
+  printf("32\n");
+  RUN(unsigned);
+  return 1;
+}
+