[PY OV] Fix egptr() usage in MemoryBuffer

src/bindings/python/src/pyopenvino/utils/utils.hpp

@@ -106,26 +106,37 @@ class MemoryBuffer : public std::streambuf {
     pos_type seekoff(off_type off,
                      std::ios_base::seekdir dir,
                      std::ios_base::openmode which = std::ios_base::in) override {
+        if (!(which & std::ios_base::in)) {
+            return pos_type(off_type(-1));
+        }
+
+        const auto size = static_cast<off_type>(egptr() - eback());
+        off_type new_pos = 0;
+
         switch (dir) {
         case std::ios_base::beg:
-            setg(eback(), eback() + off, egptr());
-            break;
-        case std::ios_base::end:
-            setg(eback(), egptr() + off, egptr());
+            new_pos = off;
             break;
         case std::ios_base::cur:
-            setg(eback(), gptr() + off, egptr());
+            new_pos = static_cast<off_type>(gptr() - eback()) + off;
+            break;
+        case std::ios_base::end:
+            new_pos = size + off;
             break;
         default:
             return pos_type(off_type(-1));
-    }
-        return (gptr() < eback() || gptr() > egptr()) ? pos_type(off_type(-1)) : pos_type(gptr() - eback());
+        }
+        if (new_pos < 0 || new_pos > size) {
+            return pos_type(off_type(-1));
+        }
+        char* const base = eback();
+        setg(base, base + new_pos, base + size);
+        return pos_type(new_pos);
     }
 
     pos_type seekpos(pos_type pos, std::ios_base::openmode which) override {
-        return seekoff(pos, std::ios_base::beg, which);
+        return seekoff(static_cast<off_type>(pos), std::ios_base::beg, which);
     }
-
 };
 
     enum class PY_TYPE : int { UNKNOWN = 0, STR, INT, FLOAT, BOOL, PARTIAL_SHAPE, MODEL_DISTRIBUTION_POLICY };