diff --git a/test_conformance/printf/test_printf.cpp b/test_conformance/printf/test_printf.cpp
index 73f0e205..0d5dfa7b 100644
--- a/test_conformance/printf/test_printf.cpp
+++ b/test_conformance/printf/test_printf.cpp
@@ -1029,6 +1029,12 @@ int test_mixed_format_random(cl_device_id deviceID, cl_context context,
     return doTest(gQueue, gContext, TYPE_MIXED_FORMAT_RANDOM, deviceID);
 }
 
+int test_length_specifier(cl_device_id deviceID, cl_context context,
+                          cl_command_queue queue, int num_elements)
+{
+    return doTest(gQueue, gContext, TYPE_LENGTH_SPECIFIER, deviceID);
+}
+
 int test_buffer_size(cl_device_id deviceID, cl_context context,
                      cl_command_queue queue, int num_elements)
 {
@@ -1055,15 +1061,25 @@ int test_buffer_size(cl_device_id deviceID, cl_context context,
 }
 
 test_definition test_list[] = {
-    ADD_TEST(int),         ADD_TEST(long),
-    ADD_TEST(half),        ADD_TEST(half_limits),
-    ADD_TEST(float),       ADD_TEST(float_limits),
-    ADD_TEST(double),      ADD_TEST(double_limits),
-    ADD_TEST(octal),       ADD_TEST(unsigned),
-    ADD_TEST(hexadecimal), ADD_TEST(char),
-    ADD_TEST(string),      ADD_TEST(format_string),
-    ADD_TEST(vector),      ADD_TEST(address_space),
-    ADD_TEST(buffer_size), ADD_TEST(mixed_format_random),
+    ADD_TEST(int),
+    ADD_TEST(long),
+    ADD_TEST(half),
+    ADD_TEST(half_limits),
+    ADD_TEST(float),
+    ADD_TEST(float_limits),
+    ADD_TEST(double),
+    ADD_TEST(double_limits),
+    ADD_TEST(octal),
+    ADD_TEST(unsigned),
+    ADD_TEST(hexadecimal),
+    ADD_TEST(char),
+    ADD_TEST(string),
+    ADD_TEST(format_string),
+    ADD_TEST(vector),
+    ADD_TEST(address_space),
+    ADD_TEST(buffer_size),
+    ADD_TEST(mixed_format_random),
+    ADD_TEST(length_specifier),
 };
 
 const int test_num = ARRAY_SIZE( test_list );
diff --git a/test_conformance/printf/test_printf.h b/test_conformance/printf/test_printf.h
index ad1e08fb..993a6126 100644
--- a/test_conformance/printf/test_printf.h
+++ b/test_conformance/printf/test_printf.h
@@ -62,6 +62,7 @@ enum PrintfTestType
     TYPE_VECTOR,
     TYPE_ADDRESS_SPACE,
     TYPE_MIXED_FORMAT_RANDOM,
+    TYPE_LENGTH_SPECIFIER,
     TYPE_COUNT
 };
 
diff --git a/test_conformance/printf/util_printf.cpp b/test_conformance/printf/util_printf.cpp
index 4584b8cc..cd84c01a 100644
--- a/test_conformance/printf/util_printf.cpp
+++ b/test_conformance/printf/util_printf.cpp
@@ -1491,6 +1491,116 @@ testCase testCaseMixedFormat = { TYPE_MIXED_FORMAT_RANDOM,
                                  correctBufferMixedFormat,
                                  printMixedFormatGenParameters, NULL };
 
+
+//=============================================================
+
+// length sub-specifier format
+
+//=============================================================
+
+std::vector<printDataGenParameters> printLenSpecGenParameters = {
+
+    { { "%hd" }, "32767" },
+
+    { { "%hhd" }, "127" },
+
+    { { "%ld" }, "9223372036854775807L" },
+
+    { { "%hd" }, "-32767" },
+
+    { { "%hhd" }, "-128" },
+
+    { { "%ld" }, "-9223372036854775807L" },
+
+    { { "%hx" }, "32767" },
+
+    { { "%hhx" }, "127" },
+
+    { { "%lx" }, "9223372036854775807L" },
+
+    { { "%hx" }, "-32767" },
+
+    { { "%hhx" }, "-128" },
+
+    { { "%lx" }, "-9223372036854775807L" },
+
+    { { "%ho" }, "32767" },
+
+    { { "%hho" }, "127" },
+
+    { { "%lo" }, "9223372036854775807L" },
+
+    { { "%ho" }, "-32767" },
+
+    { { "%hho" }, "-128" },
+
+    { { "%lo" }, "-9223372036854775807L" },
+};
+
+//---------------------------------------------------------
+
+// Lookup table -[string] length specified correct buffer
+
+//---------------------------------------------------------
+
+std::vector<std::string> correctBufferLenSpec = {
+
+    "32767",
+
+    "127",
+
+    "9223372036854775807",
+
+    "-32767",
+
+    "-128",
+
+    "-9223372036854775807",
+
+    "7fff",
+
+    "7f",
+
+    "7fffffffffffffff",
+
+    "8001",
+
+    "80",
+
+    "8000000000000001",
+
+    "77777",
+
+    "177",
+
+    "777777777777777777777",
+
+    "100001",
+
+    "200",
+
+    "1000000000000000000001",
+};
+
+
+//----------------------------------------------------------
+
+// Test case for length specified values
+
+//----------------------------------------------------------
+
+testCase testCaseLenSpec = {
+
+    TYPE_LENGTH_SPECIFIER,
+
+    correctBufferLenSpec,
+
+    printLenSpecGenParameters,
+
+    NULL
+
+};
+
 //-------------------------------------------------------------------------------
 
 //All Test cases                                                                |
@@ -1503,7 +1613,7 @@ std::vector<testCase*> allTestCase = {
     &testCaseDouble,     &testCaseDoubleLimits, &testCaseOctal,
     &testCaseUnsigned,   &testCaseHexadecimal,  &testCaseChar,
     &testCaseString,     &testCaseFormatString, &testCaseVector,
-    &testCaseAddrSpace,  &testCaseMixedFormat
+    &testCaseAddrSpace,  &testCaseMixedFormat,  &testCaseLenSpec
 };
 
 //-----------------------------------------