diff --git a/tests/basics/array_q.py b/tests/basics/array_intbig.py
similarity index 100%
rename from tests/basics/array_q.py
rename to tests/basics/array_intbig.py
diff --git a/tests/basics/builtin_abs.py b/tests/basics/builtin_abs.py
index 788bc450f82ae55ebc22c1a11d3a72f3eadf2ce9..142344e226add596aee42d705158cc4124a8f044 100644
--- a/tests/basics/builtin_abs.py
+++ b/tests/basics/builtin_abs.py
@@ -4,11 +4,3 @@ print(abs(False))
 print(abs(True))
 print(abs(1))
 print(abs(-1))
-
-# bignum
-print(abs(123456789012345678901234567890))
-print(abs(-123456789012345678901234567890))
-
-# edge cases for 32 and 64 bit archs (small int overflow when negating)
-print(abs(-0x3fffffff - 1))
-print(abs(-0x3fffffffffffffff - 1))
diff --git a/tests/basics/builtin_abs_intbig.py b/tests/basics/builtin_abs_intbig.py
new file mode 100644
index 0000000000000000000000000000000000000000..3dd5ea89fae0f500fb8e79bb82eaf906b5bf1287
--- /dev/null
+++ b/tests/basics/builtin_abs_intbig.py
@@ -0,0 +1,9 @@
+# test builtin abs
+
+# bignum
+print(abs(123456789012345678901234567890))
+print(abs(-123456789012345678901234567890))
+
+# edge cases for 32 and 64 bit archs (small int overflow when negating)
+print(abs(-0x3fffffff - 1))
+print(abs(-0x3fffffffffffffff - 1))
diff --git a/tests/basics/builtin_bin.py b/tests/basics/builtin_bin.py
index f6b6079de512730417ec0a65054f8407f9d1a5e8..85af406ce39b57f9f920fab2367a96be629357b2 100644
--- a/tests/basics/builtin_bin.py
+++ b/tests/basics/builtin_bin.py
@@ -8,5 +8,4 @@ print(bin(-15))
 print(bin(12345))
 print(bin(0b10101))
 
-print(bin(12345678901234567890))
 print(bin(0b10101010101010101010))
diff --git a/tests/basics/builtin_bin_intbig.py b/tests/basics/builtin_bin_intbig.py
new file mode 100644
index 0000000000000000000000000000000000000000..345e1f6873cac01d83ebfaf07f895c6b60ff3c0a
--- /dev/null
+++ b/tests/basics/builtin_bin_intbig.py
@@ -0,0 +1,3 @@
+# test builtin bin function
+
+print(bin(12345678901234567890))
diff --git a/tests/basics/builtin_divmod.py b/tests/basics/builtin_divmod.py
index c3b86581976270ea371e35adebec9b1a331fd109..26b3ae382467bff97369e26830d0a5aaacc8fefc 100644
--- a/tests/basics/builtin_divmod.py
+++ b/tests/basics/builtin_divmod.py
@@ -9,19 +9,7 @@ try:
 except ZeroDivisionError:
     print("ZeroDivisionError")
 
-try:
-    divmod(1 << 65, 0)
-except ZeroDivisionError:
-    print("ZeroDivisionError")
-
 try:
     divmod('a', 'b')
 except TypeError:
     print("TypeError")
-
-# bignum
-l = (1 << 65) + 123
-print(divmod(3, l))
-print(divmod(l, 5))
-print(divmod(l + 3, l))
-print(divmod(l * 20, l + 2))
diff --git a/tests/basics/builtin_divmod_intbig.py b/tests/basics/builtin_divmod_intbig.py
new file mode 100644
index 0000000000000000000000000000000000000000..758e834151ef5291d0ada6d7c5789314aee78015
--- /dev/null
+++ b/tests/basics/builtin_divmod_intbig.py
@@ -0,0 +1,13 @@
+# test builtin divmod
+
+try:
+    divmod(1 << 65, 0)
+except ZeroDivisionError:
+    print("ZeroDivisionError")
+
+# bignum
+l = (1 << 65) + 123
+print(divmod(3, l))
+print(divmod(l, 5))
+print(divmod(l + 3, l))
+print(divmod(l * 20, l + 2))
diff --git a/tests/basics/builtin_hash.py b/tests/basics/builtin_hash.py
index ffea08e575ea7395691e6257ad6433553b9ac1f8..704895fbb6dac42452b11b0d238cb60c2c65a8aa 100644
--- a/tests/basics/builtin_hash.py
+++ b/tests/basics/builtin_hash.py
@@ -4,8 +4,6 @@ print(hash(False))
 print(hash(True))
 print({():1}) # hash tuple
 print({(1,):1}) # hash non-empty tuple
-print({1 << 66:1}) # hash big int
-print({-(1 << 66):2}) # hash negative big int
 print(hash in {hash:1}) # hash function
 
 try:
@@ -50,9 +48,3 @@ class E:
     def __hash__(self):
         return True
 print(hash(E()))
-
-# __hash__ returning a large number should be truncated
-class F:
-    def __hash__(self):
-        return 1 << 70 | 1
-print(hash(F()) != 0)
diff --git a/tests/basics/builtin_hash_intbig.py b/tests/basics/builtin_hash_intbig.py
new file mode 100644
index 0000000000000000000000000000000000000000..0092c0f3ad32234cae7ce1f6139a907b54e91dd6
--- /dev/null
+++ b/tests/basics/builtin_hash_intbig.py
@@ -0,0 +1,10 @@
+# test builtin hash function
+
+print({1 << 66:1}) # hash big int
+print({-(1 << 66):2}) # hash negative big int
+
+# __hash__ returning a large number should be truncated
+class F:
+    def __hash__(self):
+        return 1 << 70 | 1
+print(hash(F()) != 0)
diff --git a/tests/basics/builtin_hex.py b/tests/basics/builtin_hex.py
index 7d1c98a7a9ddad54bf9674e7f255da961ba1786a..95d74257ecf362e8ca24501febd0688073ec5e02 100644
--- a/tests/basics/builtin_hex.py
+++ b/tests/basics/builtin_hex.py
@@ -7,6 +7,3 @@ print(hex(-15))
 
 print(hex(12345))
 print(hex(0x12345))
-
-print(hex(12345678901234567890))
-print(hex(0x12345678901234567890))
diff --git a/tests/basics/builtin_hex_intbig.py b/tests/basics/builtin_hex_intbig.py
new file mode 100644
index 0000000000000000000000000000000000000000..7049ca3f55c9f4e65e9efe8be0404833497aee29
--- /dev/null
+++ b/tests/basics/builtin_hex_intbig.py
@@ -0,0 +1,4 @@
+# test builtin hex function
+
+print(hex(12345678901234567890))
+print(hex(0x12345678901234567890))
diff --git a/tests/basics/builtin_oct.py b/tests/basics/builtin_oct.py
index d8ba8e4346f1b5a901784e06363ce18436f2a8da..6dc48a6fae5214332fa5c851278570c0d2c2f6e1 100644
--- a/tests/basics/builtin_oct.py
+++ b/tests/basics/builtin_oct.py
@@ -7,6 +7,3 @@ print(oct(-15))
 
 print(oct(12345))
 print(oct(0o12345))
-
-print(oct(12345678901234567890))
-print(oct(0o12345670123456701234))
diff --git a/tests/basics/builtin_oct_intbig.py b/tests/basics/builtin_oct_intbig.py
new file mode 100644
index 0000000000000000000000000000000000000000..4dc28ab46f5c7c46a9fe6f3d2855e65a5c8f29cd
--- /dev/null
+++ b/tests/basics/builtin_oct_intbig.py
@@ -0,0 +1,4 @@
+# test builtin oct function
+
+print(oct(12345678901234567890))
+print(oct(0o12345670123456701234))
diff --git a/tests/basics/builtin_pow3.py b/tests/basics/builtin_pow3.py
index 35e143a388dd04031ea81094e3e61b557218fcd5..dec7253bbd4958fa7398e4c835a046c25b3acd6b 100644
--- a/tests/basics/builtin_pow3.py
+++ b/tests/basics/builtin_pow3.py
@@ -8,8 +8,6 @@ except NotImplementedError:
     print("SKIP")
     sys.exit()
 
-print(pow(555557, 1000002, 1000003))
-
 # 3 arg pow is defined to only work on integers
 try:
     print(pow("x", 5, 6))
@@ -25,15 +23,3 @@ try:
     print(pow(4, 5, "z"))
 except TypeError:
     print("TypeError expected")
-
-# Tests for 3 arg pow with large values
-
-# This value happens to be prime
-x = 0xd48a1e2a099b1395895527112937a391d02d4a208bce5d74b281cf35a57362502726f79a632f063a83c0eba66196712d963aa7279ab8a504110a668c0fc38a7983c51e6ee7a85cae87097686ccdc359ee4bbf2c583bce524e3f7836bded1c771a4efcb25c09460a862fc98e18f7303df46aaeb34da46b0c4d61d5cd78350f3edb60e6bc4befa712a849
-y = 0x3accf60bb1a5365e4250d1588eb0fe6cd81ad495e9063f90880229f2a625e98c59387238670936afb2cafc5b79448e4414d6cd5e9901aa845aa122db58ddd7b9f2b17414600a18c47494ed1f3d49d005a5
-
-print(hex(pow(2, 200, x))) # Should not overflow, just 1 << 200
-print(hex(pow(2, x-1, x))) # Should be 1, since x is prime
-print(hex(pow(y, x-1, x))) # Should be 1, since x is prime
-print(hex(pow(y, y-1, x))) # Should be a 'big value'
-print(hex(pow(y, y-1, y))) # Should be a 'big value'
diff --git a/tests/basics/builtin_pow3_intbig.py b/tests/basics/builtin_pow3_intbig.py
new file mode 100644
index 0000000000000000000000000000000000000000..9f482cbde7642bc45347fe67229f0cf2c5a88dd5
--- /dev/null
+++ b/tests/basics/builtin_pow3_intbig.py
@@ -0,0 +1,23 @@
+# test builtin pow() with integral values
+# 3 arg version
+
+try:
+    print(pow(3, 4, 7))
+except NotImplementedError:
+    import sys
+    print("SKIP")
+    sys.exit()
+
+print(pow(555557, 1000002, 1000003))
+
+# Tests for 3 arg pow with large values
+
+# This value happens to be prime
+x = 0xd48a1e2a099b1395895527112937a391d02d4a208bce5d74b281cf35a57362502726f79a632f063a83c0eba66196712d963aa7279ab8a504110a668c0fc38a7983c51e6ee7a85cae87097686ccdc359ee4bbf2c583bce524e3f7836bded1c771a4efcb25c09460a862fc98e18f7303df46aaeb34da46b0c4d61d5cd78350f3edb60e6bc4befa712a849
+y = 0x3accf60bb1a5365e4250d1588eb0fe6cd81ad495e9063f90880229f2a625e98c59387238670936afb2cafc5b79448e4414d6cd5e9901aa845aa122db58ddd7b9f2b17414600a18c47494ed1f3d49d005a5
+
+print(hex(pow(2, 200, x))) # Should not overflow, just 1 << 200
+print(hex(pow(2, x-1, x))) # Should be 1, since x is prime
+print(hex(pow(y, x-1, x))) # Should be 1, since x is prime
+print(hex(pow(y, y-1, x))) # Should be a 'big value'
+print(hex(pow(y, y-1, y))) # Should be a 'big value'
diff --git a/tests/basics/bytearray_longint.py b/tests/basics/bytearray_intbig.py
similarity index 100%
rename from tests/basics/bytearray_longint.py
rename to tests/basics/bytearray_intbig.py
diff --git a/tests/basics/bytes_construct.py b/tests/basics/bytes_construct.py
index 59e02f063c98706a43b72965b42c939bc1049416..1647387675731f52578c470104d6806c168e690f 100644
--- a/tests/basics/bytes_construct.py
+++ b/tests/basics/bytes_construct.py
@@ -11,9 +11,6 @@ print(bytes(bytearray(4)))
 print(bytes(array('b', [1, 2])))
 print(bytes(array('h', [0x101, 0x202])))
 
-# long ints
-print(ord(bytes([14953042807679334000 & 0xff])))
-
 # constructor value out of range
 try:
     bytes([-1])
diff --git a/tests/basics/bytes_construct_intbig.py b/tests/basics/bytes_construct_intbig.py
new file mode 100644
index 0000000000000000000000000000000000000000..c32de185ffad116cba08a397250854dd2463971a
--- /dev/null
+++ b/tests/basics/bytes_construct_intbig.py
@@ -0,0 +1,4 @@
+# test construction of bytes from different objects
+
+# long ints
+print(ord(bytes([14953042807679334000 & 0xff])))
diff --git a/tests/basics/floordivide.py b/tests/basics/floordivide.py
index 930313d6c18644ad104cbead41b10bafab02351e..60e7634b1b62925ee90fe2099810d980fa0d5de5 100644
--- a/tests/basics/floordivide.py
+++ b/tests/basics/floordivide.py
@@ -12,18 +12,3 @@ print(a // b)
 print(a // -b)
 print(-a // b)
 print(-a // -b)
-
-if True:
-    a = 987654321987987987987987987987
-    b = 19
-
-    print(a // b)
-    print(a // -b)
-    print(-a // b)
-    print(-a // -b)
-    a = 10000000000000000000000000000000000000000000
-    b = 100
-    print(a // b)
-    print(a // -b)
-    print(-a // b)
-    print(-a // -b)    
diff --git a/tests/basics/floordivide_intbig.py b/tests/basics/floordivide_intbig.py
new file mode 100644
index 0000000000000000000000000000000000000000..422329fcd5e0bdb78740850842d42d14ef6417d7
--- /dev/null
+++ b/tests/basics/floordivide_intbig.py
@@ -0,0 +1,15 @@
+# check modulo matches python definition
+
+a = 987654321987987987987987987987
+b = 19
+
+print(a // b)
+print(a // -b)
+print(-a // b)
+print(-a // -b)
+a = 10000000000000000000000000000000000000000000
+b = 100
+print(a // b)
+print(a // -b)
+print(-a // b)
+print(-a // -b)
diff --git a/tests/basics/int_mpz.py b/tests/basics/int_big1.py
similarity index 100%
rename from tests/basics/int_mpz.py
rename to tests/basics/int_big1.py
diff --git a/tests/basics/int_bytes.py b/tests/basics/int_bytes.py
index 2f468da444418f88f6e77cb5fbd1ee9d590d8c53..45965ed4643bf8ba641e8dd659d8ebda348638ea 100644
--- a/tests/basics/int_bytes.py
+++ b/tests/basics/int_bytes.py
@@ -1,7 +1,6 @@
 print((10).to_bytes(1, "little"))
 print((111111).to_bytes(4, "little"))
 print((100).to_bytes(10, "little"))
-print((2**64).to_bytes(9, "little"))
 print(int.from_bytes(b"\x00\x01\0\0\0\0\0\0", "little"))
 print(int.from_bytes(b"\x01\0\0\0\0\0\0\0", "little"))
 print(int.from_bytes(b"\x00\x01\0\0\0\0\0\0", "little"))
diff --git a/tests/basics/int_bytes_long.py b/tests/basics/int_bytes_intbig.py
similarity index 78%
rename from tests/basics/int_bytes_long.py
rename to tests/basics/int_bytes_intbig.py
index 81ebc6cdcdd305f009eca57223c6dd9f9edc69db..39cd67d26f20050b9c6b9493b2022016c5d14044 100644
--- a/tests/basics/int_bytes_long.py
+++ b/tests/basics/int_bytes_intbig.py
@@ -1,3 +1,5 @@
+print((2**64).to_bytes(9, "little"))
+
 b = bytes(range(20))
 
 il = int.from_bytes(b, "little")
diff --git a/tests/basics/int_constfolding.py b/tests/basics/int_constfolding.py
index aa38fa6b80ae5fda959833dc2b510664f3b1bfb2..7bb53837858b3becc830b7d007fbda839e6265ea 100644
--- a/tests/basics/int_constfolding.py
+++ b/tests/basics/int_constfolding.py
@@ -7,19 +7,11 @@ print(+100)
 # negation
 print(-1)
 print(-(-1))
-print(-0x3fffffff) # 32-bit edge case
-print(-0x3fffffffffffffff) # 64-bit edge case
-print(-(-0x3fffffff - 1)) # 32-bit edge case
-print(-(-0x3fffffffffffffff - 1)) # 64-bit edge case
 
 # 1's complement
 print(~0)
 print(~1)
 print(~-1)
-print(~0x3fffffff) # 32-bit edge case
-print(~0x3fffffffffffffff) # 64-bit edge case
-print(~(-0x3fffffff - 1)) # 32-bit edge case
-print(~(-0x3fffffffffffffff - 1)) # 64-bit edge case
 
 # addition
 print(1 + 2)
@@ -37,9 +29,3 @@ print(123 // 7, 123 % 7)
 print(-123 // 7, -123 % 7)
 print(123 // -7, 123 % -7)
 print(-123 // -7, -123 % -7)
-
-# zero big-num on rhs
-print(1 + ((1 << 65) - (1 << 65)))
-
-# negative big-num on rhs
-print(1 + (-(1 << 65)))
diff --git a/tests/basics/int_constfolding_intbig.py b/tests/basics/int_constfolding_intbig.py
new file mode 100644
index 0000000000000000000000000000000000000000..714f1559a61f263b25dc25d5b8fa984e685f5f5f
--- /dev/null
+++ b/tests/basics/int_constfolding_intbig.py
@@ -0,0 +1,19 @@
+# tests int constant folding in compiler
+
+# negation
+print(-0x3fffffff) # 32-bit edge case
+print(-0x3fffffffffffffff) # 64-bit edge case
+print(-(-0x3fffffff - 1)) # 32-bit edge case
+print(-(-0x3fffffffffffffff - 1)) # 64-bit edge case
+
+# 1's complement
+print(~0x3fffffff) # 32-bit edge case
+print(~0x3fffffffffffffff) # 64-bit edge case
+print(~(-0x3fffffff - 1)) # 32-bit edge case
+print(~(-0x3fffffffffffffff - 1)) # 64-bit edge case
+
+# zero big-num on rhs
+print(1 + ((1 << 65) - (1 << 65)))
+
+# negative big-num on rhs
+print(1 + (-(1 << 65)))
diff --git a/tests/basics/int_divmod.py b/tests/basics/int_divmod.py
index 3c76cd958c7c791ac6718f9b00a82153bdb23902..2e878135f091fe702d3e5d2e4ea7146a7ac7b587 100644
--- a/tests/basics/int_divmod.py
+++ b/tests/basics/int_divmod.py
@@ -5,11 +5,3 @@ for i in range(-2, 3):
     for j in range(-4, 5):
         if j != 0:
             print(i, j, i // j, i % j, divmod(i, j))
-
-# this tests bignum modulo
-a = 987654321987987987987987987987
-b = 19
-print(a % b)
-print(a % -b)
-print(-a % b)
-print(-a % -b)
diff --git a/tests/basics/int_divmod_intbig.py b/tests/basics/int_divmod_intbig.py
new file mode 100644
index 0000000000000000000000000000000000000000..ea8de07f24be69ac7de2e44526aec67b0a105c5a
--- /dev/null
+++ b/tests/basics/int_divmod_intbig.py
@@ -0,0 +1,9 @@
+# test integer floor division and modulo
+
+# this tests bignum modulo
+a = 987654321987987987987987987987
+b = 19
+print(a % b)
+print(a % -b)
+print(-a % b)
+print(-a % -b)
diff --git a/tests/basics/int_long.py b/tests/basics/int_intbig.py
similarity index 100%
rename from tests/basics/int_long.py
rename to tests/basics/int_intbig.py
diff --git a/tests/basics/op_error.py b/tests/basics/op_error.py
index 5ba6a80e26d69d94a41e17cc8dbd233f72027248..b30b5f0a3575f0e12beacfacb33cef0d2f83fa0c 100644
--- a/tests/basics/op_error.py
+++ b/tests/basics/op_error.py
@@ -23,7 +23,6 @@ test_exc("bytearray() // 2", TypeError)
 
 # object with buffer protocol needed on rhs
 test_exc("bytearray(1) + 1", TypeError)
-test_exc("(1 << 70) in 1", TypeError)
 
 # unsupported subscription
 test_exc("1[0]", TypeError)
diff --git a/tests/basics/op_error_intbig.py b/tests/basics/op_error_intbig.py
new file mode 100644
index 0000000000000000000000000000000000000000..432c05a9fe4086fdfd5b1a32a9452e7b21a761b9
--- /dev/null
+++ b/tests/basics/op_error_intbig.py
@@ -0,0 +1,13 @@
+# test errors from bad operations (unary, binary, etc)
+
+def test_exc(code, exc):
+    try:
+        exec(code)
+        print("no exception")
+    except exc:
+        print("right exception")
+    except:
+        print("wrong exception")
+
+# object with buffer protocol needed on rhs
+test_exc("(1 << 70) in 1", TypeError)
diff --git a/tests/basics/slice_bignum.py b/tests/basics/slice_intbig.py
similarity index 100%
rename from tests/basics/slice_bignum.py
rename to tests/basics/slice_intbig.py
diff --git a/tests/basics/struct1.py b/tests/basics/struct1.py
index d89519a2fa2fa94c744a65f633608f90ab000561..bb6877c785f71ffe729da1e0f0e85cbf23649b48 100644
--- a/tests/basics/struct1.py
+++ b/tests/basics/struct1.py
@@ -37,34 +37,6 @@ s = struct.pack("BHBI", 10, 100, 200, 300)
 v = struct.unpack("BHBI", s)
 print(v == (10, 100, 200, 300))
 
-# check maximum pack on 32-bit machine
-print(struct.pack("<I", 2**32 - 1))
-print(struct.pack("<I", 0xffffffff))
-
-# long long ints
-print(struct.pack("<Q", 2**64 - 1))
-print(struct.pack(">Q", 2**64 - 1))
-print(struct.pack("<Q", 0xffffffffffffffff))
-print(struct.pack(">Q", 0xffffffffffffffff))
-print(struct.pack("<q", -1))
-print(struct.pack(">q", -1))
-print(struct.pack("<Q", 1234567890123456789))
-print(struct.pack("<q", -1234567890123456789))
-print(struct.pack(">Q", 1234567890123456789))
-print(struct.pack(">q", -1234567890123456789))
-print(struct.unpack("<Q", b"\x12\x34\x56\x78\x90\x12\x34\x56"))
-print(struct.unpack(">Q", b"\x12\x34\x56\x78\x90\x12\x34\x56"))
-print(struct.unpack("<q", b"\x12\x34\x56\x78\x90\x12\x34\xf6"))
-print(struct.unpack(">q", b"\xf2\x34\x56\x78\x90\x12\x34\x56"))
-
-# check maximum unpack
-print(struct.unpack("<I", b"\xff\xff\xff\xff"))
-print(struct.unpack("<Q", b"\xff\xff\xff\xff\xff\xff\xff\xff"))
-
-# check small int overflow
-print(struct.unpack("<i", b'\xff\xff\xff\x7f'))
-print(struct.unpack("<q", b'\xff\xff\xff\xff\xff\xff\xff\x7f'))
-
 # network byte order
 print(struct.pack('!i', 123))
 
diff --git a/tests/basics/struct1_intbig.py b/tests/basics/struct1_intbig.py
new file mode 100644
index 0000000000000000000000000000000000000000..7f4c3ce120f6b0563187fcdfdcc4f15cb402e2fa
--- /dev/null
+++ b/tests/basics/struct1_intbig.py
@@ -0,0 +1,37 @@
+try:
+    import ustruct as struct
+except:
+    try:
+        import struct
+    except ImportError:
+        import sys
+        print("SKIP")
+        sys.exit()
+
+# check maximum pack on 32-bit machine
+print(struct.pack("<I", 2**32 - 1))
+print(struct.pack("<I", 0xffffffff))
+
+# long long ints
+print(struct.pack("<Q", 2**64 - 1))
+print(struct.pack(">Q", 2**64 - 1))
+print(struct.pack("<Q", 0xffffffffffffffff))
+print(struct.pack(">Q", 0xffffffffffffffff))
+print(struct.pack("<q", -1))
+print(struct.pack(">q", -1))
+print(struct.pack("<Q", 1234567890123456789))
+print(struct.pack("<q", -1234567890123456789))
+print(struct.pack(">Q", 1234567890123456789))
+print(struct.pack(">q", -1234567890123456789))
+print(struct.unpack("<Q", b"\x12\x34\x56\x78\x90\x12\x34\x56"))
+print(struct.unpack(">Q", b"\x12\x34\x56\x78\x90\x12\x34\x56"))
+print(struct.unpack("<q", b"\x12\x34\x56\x78\x90\x12\x34\xf6"))
+print(struct.unpack(">q", b"\xf2\x34\x56\x78\x90\x12\x34\x56"))
+
+# check maximum unpack
+print(struct.unpack("<I", b"\xff\xff\xff\xff"))
+print(struct.unpack("<Q", b"\xff\xff\xff\xff\xff\xff\xff\xff"))
+
+# check small int overflow
+print(struct.unpack("<i", b'\xff\xff\xff\x7f'))
+print(struct.unpack("<q", b'\xff\xff\xff\xff\xff\xff\xff\x7f'))
diff --git a/tests/run-tests b/tests/run-tests
index d568f23e891464085e0f1b6140b93133e08005fd..bacaebea81f4cb0148e388d7e7c6780722d8b653 100755
--- a/tests/run-tests
+++ b/tests/run-tests
@@ -326,7 +326,7 @@ def run_tests(pyb, tests, args):
         test_name = os.path.splitext(test_basename)[0]
         is_native = test_name.startswith("native_") or test_name.startswith("viper_")
         is_endian = test_name.endswith("_endian")
-        is_int_big = test_name.startswith("int_big_") or test_name.endswith("_intbig")
+        is_int_big = test_name.startswith("int_big") or test_name.endswith("_intbig")
         is_set_type = test_name.startswith("set_") or test_name.startswith("frozenset")
         is_async = test_name.startswith("async_")