diff --git a/regress/memmap_assert.py b/regress/memmap_assert.py
new file mode 100755
index 00000000..cebdb8e1
--- /dev/null
+++ b/regress/memmap_assert.py
@@ -0,0 +1,8 @@
+#!/usr/bin/env python
+
+import unicorn
+
+u = unicorn.Uc(unicorn.UC_ARCH_X86, unicorn.UC_MODE_32)
+u.mem_map(0x2000, 0)
+u.mem_map(0x4000, 1)
+print "I am never reached"
diff --git a/regress/memmap_segfault.py b/regress/memmap_segfault.py
new file mode 100755
index 00000000..83aea625
--- /dev/null
+++ b/regress/memmap_segfault.py
@@ -0,0 +1,25 @@
+#!/usr/bin/env python
+
+import unicorn
+
+u = unicorn.Uc(unicorn.UC_ARCH_X86, unicorn.UC_MODE_32)
+u.mem_map(0x2000, 0x1000)
+u.mem_read(0x2000, 1)
+
+for i in range(20):
+    try:
+        u = unicorn.Uc(unicorn.UC_ARCH_X86, unicorn.UC_MODE_32)
+        u.mem_map(i*0x1000, 5)
+        u.mem_read(i*0x1000, 1)
+        print hex(i*0x1000) + " succeeeded"
+    except unicorn.UcError:
+        print hex(i*0x1000) + " failed"
+
+for i in range(20):
+    try:
+        u = unicorn.Uc(unicorn.UC_ARCH_X86, unicorn.UC_MODE_32)
+        u.mem_map(i*0x1000, 5)
+        u.mem_read(i*0x1000, 1)
+        print hex(i*0x1000) + " succeeeded"
+    except unicorn.UcError:
+        print hex(i*0x1000) + " failed"
diff --git a/regress/memmap_weirdness.py b/regress/memmap_weirdness.py
new file mode 100755
index 00000000..d81eccd6
--- /dev/null
+++ b/regress/memmap_weirdness.py
@@ -0,0 +1,12 @@
+#!/usr/bin/env python
+
+import unicorn
+
+for i in range(20):
+    #try:
+    u = unicorn.Uc(unicorn.UC_ARCH_X86, unicorn.UC_MODE_32)
+    u.mem_map(i*0x1000, 5)
+    u.mem_read(i*0x1000+6, 1)
+    print hex(i*0x1000) + " succeeeded"
+    #except unicorn.UcError as e:
+    #   print hex(i*0x1000) + " failed:",e