Fixed part coverity issues in samples (#8744)

samples/cpp/common/utils/include/samples/classification_results.h

@@ -223,6 +223,7 @@ public:
      */
     void show() {
         /** Print the result iterating over each batch **/
+        std::ios::fmtflags fmt(std::cout.flags());
         std::cout << std::endl << "Top " << _nTop << " results:" << std::endl << std::endl;
         for (unsigned int image_id = 0; image_id < _batchSize; ++image_id) {
             std::wstring out(_imageNames[image_id].begin(), _imageNames[image_id].end());
@@ -248,10 +249,12 @@ public:
             }
             std::cout << std::endl;
         }
+        std::cout.flags(fmt);
     }
 
     void print() {
         /** Print the result iterating over each batch **/
+        std::ios::fmtflags fmt(std::cout.flags());
         std::cout << std::endl << "Top " << _nTop << " results:" << std::endl << std::endl;
         for (unsigned int image_id = 0; image_id < _batchSize; ++image_id) {
             std::wstring out(_imageNames[image_id].begin(), _imageNames[image_id].end());
@@ -287,6 +290,7 @@ public:
             }
             std::cout << std::endl;
         }
+        std::cout.flags(fmt);
     }
 
     /**

samples/cpp/common/utils/include/samples/common.hpp

@@ -593,6 +593,7 @@ static UNUSED void printPerformanceCounts(
     if (bshowHeader) {
         stream << std::endl << "performance counts:" << std::endl << std::endl;
     }
+    std::ios::fmtflags fmt(std::cout.flags());
 
     auto performanceMapSorted = perfCountersSorted(performanceMap);
 
@@ -629,6 +630,7 @@ static UNUSED void printPerformanceCounts(
     std::cout << std::endl;
     std::cout << "Full device name: " << deviceName << std::endl;
     std::cout << std::endl;
+    std::cout.flags(fmt);
 }
 
 static UNUSED void printPerformanceCounts(InferenceEngine::InferRequest request,

samples/cpp/speech_sample/main.cpp

@@ -307,6 +307,9 @@ void printPerformanceCounters(
     std::string fullDeviceName,
     const uint64_t numberOfFramesOnHw) {
 #if !defined(__arm__) && !defined(_M_ARM) && !defined(__aarch64__) && !defined(_M_ARM64)
+    if (numberOfFrames == 0)
+        throw std::runtime_error("printPerformanceCounters: numberOfFrames=0, incorrect input");
+    std::ios::fmtflags fmt(std::cout.flags());
     stream << std::endl << "Performance counts:" << std::endl;
     stream << std::setw(10) << std::right << ""
            << "Counter descriptions";
@@ -340,6 +343,7 @@ void printPerformanceCounters(
     stream << "Number of frames delivered to GNA HW: " << numberOfFramesOnHw;
     stream << "/" << numberOfFrames;
     stream << std::endl;
+    std::cout.flags(fmt);
 #endif
 }
 

thirdparty/cnpy/cnpy.cpp

@@ -224,6 +224,7 @@ cnpy::NpyArray load_the_npz_array(FILE* fp, uint32_t compr_bytes, uint32_t uncom
     d_stream.opaque = Z_NULL;
     d_stream.avail_in = 0;
     d_stream.next_in = Z_NULL;
+    d_stream.total_in = 0;
     d_stream.total_out = 0;
     err = inflateInit2(&d_stream, -MAX_WBITS);
 
@@ -332,8 +333,8 @@ cnpy::NpyArray cnpy::npz_load(std::string fname, std::string varname) {
 
         //read in the extra field
         uint16_t extra_field_len = *(uint16_t*) &local_header[28];
-        fseek(fp,extra_field_len,SEEK_CUR); //skip past the extra field
-        
+        if (fseek(fp,extra_field_len,SEEK_CUR) != 0) //skip past the extra field
+            throw std::runtime_error("npz_load: failed fseek");
         uint16_t compr_method = *reinterpret_cast<uint16_t*>(&local_header[0]+8);
         uint32_t compr_bytes = *reinterpret_cast<uint32_t*>(&local_header[0]+18);
         uint32_t uncompr_bytes = *reinterpret_cast<uint32_t*>(&local_header[0]+22);

thirdparty/cnpy/cnpy.h

@@ -163,7 +163,8 @@ namespace cnpy {
                 fclose(fp);
                 throw std::runtime_error("npz_save: header read error while adding to existing zip");
             }
-            fseek(fp,global_header_offset,SEEK_SET);
+            if(fseek(fp,global_header_offset,SEEK_SET) != 0)
+                throw std::runtime_error("npz_save: failed fseek");
         }
         else {
             fp = fopen(zipname.c_str(),"wb");