misc: Fix issues identified by static analysis

Another bunch of issues addressed.

3 files changed, 11 insertions, 4 deletions

diff --git a/src/base/loader/object_file.cc b/src/base/loader/object_file.cc
index 170e18d5e..29cea8ccf 100644
--- a/src/base/loader/object_file.cc
+++ b/src/base/loader/object_file.cc
@@ -54,7 +54,8 @@ ObjectFile::ObjectFile(const string &_filename, int _fd,
                        size_t _len, uint8_t *_data,
                        Arch _arch, OpSys _opSys)
     : filename(_filename), descriptor(_fd), fileData(_data), len(_len),
-      arch(_arch), opSys(_opSys), globalPtr(0)
+      arch(_arch), opSys(_opSys), entry(0), globalPtr(0),
+      text{0, nullptr, 0}, data{0, nullptr, 0}, bss{0, nullptr, 0}
 {
 }
 
@@ -116,7 +117,9 @@ createObjectFile(const string &fname, bool raw)
     }
 
     // find the length of the file by seeking to the end
-    size_t len = (size_t)lseek(fd, 0, SEEK_END);
+    off_t off = lseek(fd, 0, SEEK_END);
+    fatal_if(off < 0, "Failed to determine size of object file %s\n", fname);
+    size_t len = static_cast<size_t>(off);
 
     // mmap the whole shebang
     uint8_t *fileData =
diff --git a/src/base/statistics.hh b/src/base/statistics.hh
index 1b3d0fc54..a6edde2f9 100644
--- a/src/base/statistics.hh
+++ b/src/base/statistics.hh
@@ -1361,7 +1361,8 @@ class DistStor
         /** The number of buckets. Equal to (max-min)/bucket_size. */
         size_type buckets;
 
-        Params() : DistParams(Dist) {}
+        Params() : DistParams(Dist), min(0), max(0), bucket_size(0),
+                   buckets(0) {}
     };
 
   private:
diff --git a/src/base/vnc/vncserver.cc b/src/base/vnc/vncserver.cc
index e762ad1d4..77a4316ab 100644
--- a/src/base/vnc/vncserver.cc
+++ b/src/base/vnc/vncserver.cc
@@ -184,6 +184,8 @@ VncServer::accept()
         panic("%s: cannot accept a connection if not listening!", name());
 
     int fd = listener.accept(true);
+    fatal_if(fd < 0, "%s: failed to accept VNC connection!", name());
+
     if (dataFd != -1) {
         char message[] = "vnc server already attached!\n";
         atomic_write(fd, message, sizeof(message));
@@ -643,7 +645,8 @@ VncServer::sendFrameBufferUpdate()
     assert(fbPtr);
 
     uint8_t *tmp = vc->convert(fbPtr);
-    write(tmp, videoWidth() * videoHeight() * sizeof(uint32_t));
+    uint64_t num_pixels = videoWidth() * videoHeight();
+    write(tmp, num_pixels * sizeof(uint32_t));
     delete [] tmp;
 
 }