build: tests: Fix build warnings in mem_buff_demo test

Signed-off-by: Mike Leach <mike.leach@linaro.org>

1 files changed, 7 insertions, 2 deletions

diff --git a/decoder/tests/source/mem_buff_demo.cpp b/decoder/tests/source/mem_buff_demo.cpp
index cacc227e941f..052870fd3e56 100644
--- a/decoder/tests/source/mem_buff_demo.cpp
+++ b/decoder/tests/source/mem_buff_demo.cpp
@@ -126,6 +126,7 @@ static int initDataBuffers()
     FILE *fp;
     std::string filename;
     long size;
+    size_t bytes_read;
 
     /* the file names to create the data buffers */
 #ifdef _WIN32
@@ -158,8 +159,10 @@ static int initDataBuffers()
         return OCSD_ERR_MEM;
     } 
     rewind(fp);
-    fread(input_trace_data, 1, input_trace_data_size, fp);
+    bytes_read = fread(input_trace_data, 1, input_trace_data_size, fp);
     fclose(fp);
+    if (bytes_read < (size_t)input_trace_data_size)
+        return OCSD_ERR_FILE_ERROR;
 
     /* load up a memory image */
     filename = default_base_snapshot_path;
@@ -178,8 +181,10 @@ static int initDataBuffers()
         return OCSD_ERR_MEM;
     }
     rewind(fp);
-    fread(program_image_buffer, 1, program_image_size, fp);
+    bytes_read = fread(program_image_buffer, 1, program_image_size, fp);
     fclose(fp);
+    if (bytes_read < (size_t)program_image_size)
+        return OCSD_ERR_FILE_ERROR;
     program_image_address = mem_dump_address;
     return OCSD_OK;
 }