diff --git a/dtool/src/dtoolutil/filename.cxx b/dtool/src/dtoolutil/filename.cxx
index 69f707d766..31b7a264ca 100644
--- a/dtool/src/dtoolutil/filename.cxx
+++ b/dtool/src/dtoolutil/filename.cxx
@@ -2317,7 +2317,9 @@ touch() const {
         perror(os_specific.c_str());
         return false;
       }
-      close(fd);
+      if (close(fd) < 0) {
+        perror(os_specific.c_str());
+      }
       return true;
     }
     perror(os_specific.c_str());
@@ -2766,7 +2768,9 @@ atomic_compare_and_exchange_contents(string &orig_contents,
   if (flock(fd, LOCK_EX) != 0) {
 #endif
     perror(os_specific.c_str());
-    close(fd);
+    if (close(fd) < 0) {
+      perror(os_specific.c_str());
+    }
     return false;
   }
 
@@ -2778,7 +2782,9 @@ atomic_compare_and_exchange_contents(string &orig_contents,
 
   if (bytes_read < 0) {
     perror(os_specific.c_str());
-    close(fd);
+    if (close(fd) < 0) {
+      perror(os_specific.c_str());
+    }
     return false;
   }
 
@@ -2789,7 +2795,9 @@ atomic_compare_and_exchange_contents(string &orig_contents,
     ssize_t bytes_written = write(fd, new_contents.data(), new_contents.size());
     if (bytes_written < 0) {
       perror(os_specific.c_str());
-      close(fd);
+      if (close(fd) < 0) {
+        perror(os_specific.c_str());
+      }
       return false;
     }
   }
@@ -2882,7 +2890,9 @@ atomic_read_contents(string &contents) const {
   if (flock(fd, LOCK_EX) != 0) {
 #endif
     perror(os_specific.c_str());
-    close(fd);
+    if (close(fd) < 0) {
+      perror(os_specific.c_str());
+    }
     return false;
   }
 
@@ -2894,11 +2904,15 @@ atomic_read_contents(string &contents) const {
 
   if (bytes_read < 0) {
     perror(os_specific.c_str());
-    close(fd);
+    if (close(fd) < 0) {
+      perror(os_specific.c_str());
+    }
     return false;
   }
 
-  close(fd);
+  if (close(fd) < 0) {
+    perror(os_specific.c_str());
+  }
   return true;
 #endif  // _WIN32
 }
diff --git a/dtool/src/dtoolutil/pandaFileStreamBuf.cxx b/dtool/src/dtoolutil/pandaFileStreamBuf.cxx
index 1caecaf991..e5891c7158 100644
--- a/dtool/src/dtoolutil/pandaFileStreamBuf.cxx
+++ b/dtool/src/dtoolutil/pandaFileStreamBuf.cxx
@@ -267,7 +267,15 @@ close() {
   _handle = nullptr;
 #else
   if (_fd != -1) {
-    ::close(_fd);
+    if (::close(_fd) < 0) {
+#ifdef NDEBUG
+      perror("close");
+#else
+      char *str = (char *)alloca(_filename.size() + 32);
+      sprintf(str, "close(%d \"%s\")", _fd, _filename.c_str());
+      perror(str);
+#endif
+    }
   }
   _fd = -1;
 #endif  // _WIN32
diff --git a/dtool/src/interrogate/interfaceMakerPythonNative.cxx b/dtool/src/interrogate/interfaceMakerPythonNative.cxx
index f9a2983b08..dbdfdb8601 100644
--- a/dtool/src/interrogate/interfaceMakerPythonNative.cxx
+++ b/dtool/src/interrogate/interfaceMakerPythonNative.cxx
@@ -3915,7 +3915,7 @@ write_function_for_name(ostream &out, Object *obj,
         // None of the remaps take any keyword arguments, so let's check that
         // we take none.  This saves some checks later on.
         indent(out, 4) << "if (kwds == nullptr || PyDict_GET_SIZE(kwds) == 0) {\n";
-        if (min_args == 1 && min_args == 1) {
+        if (min_args == 1 && max_args == 1) {
           indent(out, 4) << "  PyObject *arg = PyTuple_GET_ITEM(args, 0);\n";
           always_returns = write_function_forset(out, mii->second, min_args,
                                                  max_args, expected_params, 6,
diff --git a/panda/metalibs/pandagl/pandagl.cxx b/panda/metalibs/pandagl/pandagl.cxx
index dfed9f2ba2..be59040afc 100644
--- a/panda/metalibs/pandagl/pandagl.cxx
+++ b/panda/metalibs/pandagl/pandagl.cxx
@@ -65,23 +65,21 @@ init_libpandagl() {
  */
 int
 get_pipe_type_pandagl() {
-#ifdef HAVE_WGL
+#if defined(HAVE_WGL)
   return wglGraphicsPipe::get_class_type().get_index();
-#endif
 
-#ifdef HAVE_COCOA
+#elif defined(HAVE_COCOA)
   return CocoaGLGraphicsPipe::get_class_type().get_index();
-#endif
 
-#ifdef HAVE_GLX
+#elif defined(HAVE_GLX)
   return glxGraphicsPipe::get_class_type().get_index();
-#endif
 
-#ifdef HAVE_EGL
+#elif defined(HAVE_EGL)
   return eglGraphicsPipe::get_class_type().get_index();
-#endif
 
+#else
   return 0;
+#endif
 }
 
 #if defined(HAVE_EGL) && !defined(USE_X11)
diff --git a/panda/src/display/graphicsStateGuardian.cxx b/panda/src/display/graphicsStateGuardian.cxx
index feb017f382..d90cb6ac08 100644
--- a/panda/src/display/graphicsStateGuardian.cxx
+++ b/panda/src/display/graphicsStateGuardian.cxx
@@ -2083,6 +2083,8 @@ fetch_specified_texture(Shader::ShaderTexSpec &spec, SamplerState &sampler,
       const LightAttrib *target_light;
       _target_rs->get_attrib_def(target_light);
 
+      PT(Texture) tex;
+
       // We don't count ambient lights, which would be pretty silly to handle
       // via this mechanism.
       size_t num_lights = target_light->get_num_non_ambient_lights();
@@ -2092,28 +2094,21 @@ fetch_specified_texture(Shader::ShaderTexSpec &spec, SamplerState &sampler,
         Light *light_obj = light.node()->as_light();
         nassertr(light_obj != nullptr, nullptr);
 
-        PT(Texture) tex;
         LightLensNode *lln = DCAST(LightLensNode, light.node());
         if (lln != nullptr && lln->_shadow_caster) {
           tex = get_shadow_map(light);
         } else {
           tex = get_dummy_shadow_map((Texture::TextureType)spec._desired_type);
         }
-
-        if (tex != nullptr) {
-          sampler = tex->get_default_sampler();
-        }
-        return tex;
       } else {
         // There is no such light assigned.  Bind a dummy shadow map.
-        PT(Texture) tex = get_dummy_shadow_map((Texture::TextureType)spec._desired_type);
-        if (tex != nullptr) {
-          sampler = tex->get_default_sampler();
-        }
-        return tex;
+        tex = get_dummy_shadow_map((Texture::TextureType)spec._desired_type);
       }
+      if (tex != nullptr) {
+        sampler = tex->get_default_sampler();
+      }
+      return tex;
     }
-    break;
 
   case Shader::STO_ff_stage_i:
     {
@@ -2181,7 +2176,6 @@ fetch_specified_texture(Shader::ShaderTexSpec &spec, SamplerState &sampler,
       }
       return default_add_tex;
     }
-    break;
 
   case Shader::STO_stage_normal_i:
     {
@@ -2211,7 +2205,6 @@ fetch_specified_texture(Shader::ShaderTexSpec &spec, SamplerState &sampler,
       }
       return default_normal_height_tex;
     }
-    break;
 
   case Shader::STO_stage_gloss_i:
     {
@@ -2264,7 +2257,6 @@ fetch_specified_texture(Shader::ShaderTexSpec &spec, SamplerState &sampler,
       }
       return default_normal_height_tex;
     }
-    break;
 
   case Shader::STO_stage_selector_i:
     {
diff --git a/panda/src/nativenet/socket_ip.h b/panda/src/nativenet/socket_ip.h
index e6fc5eeb24..fdf91fbc9a 100644
--- a/panda/src/nativenet/socket_ip.h
+++ b/panda/src/nativenet/socket_ip.h
@@ -81,7 +81,11 @@ private:
 inline bool Socket_IP::
 ErrorClose() {
   if (Active()) {
-    DO_CLOSE(_socket);
+    if (DO_CLOSE(_socket) != 0) {
+#ifndef _WIN32
+      perror("Socket_IP::ErrorClose");
+#endif
+    }
   }
 
   _socket = BAD_SOCKET;
@@ -126,7 +130,11 @@ inline Socket_IP::
 inline void Socket_IP::
 Close() {
   if (Active()) {
-    DO_CLOSE(_socket);
+    if (DO_CLOSE(_socket) != 0) {
+#ifndef _WIN32
+      perror("Socket_IP::ErrorClose");
+#endif
+    }
   }
 
   _socket = BAD_SOCKET;
diff --git a/panda/src/pgraph/transformState.h b/panda/src/pgraph/transformState.h
index 964c4fc7d8..ca4727b25f 100644
--- a/panda/src/pgraph/transformState.h
+++ b/panda/src/pgraph/transformState.h
@@ -134,6 +134,17 @@ PUBLISHED:
   INLINE bool has_nonzero_shear() const;
   INLINE bool has_mat() const;
 
+#ifdef CPPPARSER
+  // Force interrogate to make a copy as a temporary solution for #1625.
+  LPoint3 get_pos() const;
+  LVecBase3 get_hpr() const;
+  LQuaternion get_quat() const;
+  LQuaternion get_norm_quat() const;
+  LVecBase3 get_scale() const;
+  PN_stdfloat get_uniform_scale() const;
+  LVecBase3 get_shear() const;
+  LMatrix4 get_mat() const;
+#else
   INLINE const LPoint3 &get_pos() const;
   INLINE const LVecBase3 &get_hpr() const;
   INLINE const LQuaternion &get_quat() const;
@@ -142,6 +153,7 @@ PUBLISHED:
   INLINE PN_stdfloat get_uniform_scale() const;
   INLINE const LVecBase3 &get_shear() const;
   INLINE const LMatrix4 &get_mat() const;
+#endif
   INLINE const LMatrix4 *get_inverse_mat() const;
 
   INLINE LVecBase2 get_pos2d() const;
diff --git a/pandatool/src/deploy-stub/deploy-stub.c b/pandatool/src/deploy-stub/deploy-stub.c
index 484b08d159..7e0b22464d 100644
--- a/pandatool/src/deploy-stub/deploy-stub.c
+++ b/pandatool/src/deploy-stub/deploy-stub.c
@@ -321,7 +321,9 @@ static int setup_logging(const char *path, int append) {
   dup2(fd, 1);
   dup2(fd, 2);
 
-  close(fd);
+  if (close(fd) < 0) {
+    perror("setup_logging: close");
+  }
   return 1;
 #endif
 }