Add non-regression test for buffer overflow
diff --git a/tests/suites/test_suite_mpi.data b/tests/suites/test_suite_mpi.data
index 8b5f97d..425e93a 100644
--- a/tests/suites/test_suite_mpi.data
+++ b/tests/suites/test_suite_mpi.data
@@ -25,6 +25,9 @@
Base test mpi_read_write_string #3 (Negative decimal)
mpi_read_write_string:16:"-23":16:"-23":100:0:0
+Base test mpi_read_write_string #4 (Buffer just fits)
+mpi_read_write_string:16:"-4":4:"-10":4:0:0
+
Test mpi_read_write_string #1 (Invalid character)
mpi_read_write_string:10:"a28":0:"":100:MBEDTLS_ERR_MPI_INVALID_CHARACTER:0
diff --git a/tests/suites/test_suite_mpi.function b/tests/suites/test_suite_mpi.function
index d1fa5a4..f982385 100644
--- a/tests/suites/test_suite_mpi.function
+++ b/tests/suites/test_suite_mpi.function
@@ -294,6 +294,8 @@
mbedtls_mpi_init( &X );
+ memset( str, '!', sizeof( str ) );
+
TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == result_read );
if( result_read == 0 )
{
@@ -301,6 +303,7 @@
if( result_write == 0 )
{
TEST_ASSERT( strcasecmp( str, input_A ) == 0 );
+ TEST_ASSERT( str[len] == '!' );
}
}