Merge #15774 fix(pvs): fix warnings, script

scripts/pvscheck.sh

@@ -373,13 +373,13 @@ run_analysis() {(
     analyze \
       --lic-file PVS-Studio.lic \
       --threads "$(get_jobs_num)" \
-      --exclude-path src/nvim/xdiff \
+      --exclude-path src/xdiff \
       --output-file PVS-studio.log \
       --file build/compile_commands.json \
       --sourcetree-root . || true
 
   rm -rf PVS-studio.{xml,err,tsk,html.d}
-  local plog_args="PVS-studio.log --srcRoot . --excludedCodes V011,V1042"
+  local plog_args="PVS-studio.log --srcRoot . --excludedCodes V011,V1042,V1051,V1074"
   plog-converter $plog_args --renderTypes xml       --output PVS-studio.xml
   plog-converter $plog_args --renderTypes errorfile --output PVS-studio.err
   plog-converter $plog_args --renderTypes tasklist  --output PVS-studio.tsk

src/nvim/buffer.c

@@ -3112,12 +3112,13 @@ void fileinfo(int fullname,               // when non-zero print full path
                  (size_t)(IOSIZE - (p - buffer)), true);
   }
 
+  bool dontwrite = bt_dontwrite(curbuf);
   vim_snprintf_add((char *)buffer, IOSIZE, "\"%s%s%s%s%s%s",
                    curbufIsChanged()
                    ? (shortmess(SHM_MOD) ?  " [+]" : _(" [Modified]")) : " ",
-                   (curbuf->b_flags & BF_NOTEDITED) && !bt_dontwrite(curbuf)
+                   (curbuf->b_flags & BF_NOTEDITED) && !dontwrite
                    ? _("[Not edited]") : "",
-                   (curbuf->b_flags & BF_NEW) && !bt_dontwrite(curbuf)
+                   (curbuf->b_flags & BF_NEW) && !dontwrite
                    ? new_file_message() : "",
                    (curbuf->b_flags & BF_READERR)
                    ? _("[Read errors]") : "",

src/nvim/eval.c

@@ -6193,7 +6193,7 @@ int assert_inrange(typval_T *argvars)
       char msg[55];
       vim_snprintf(msg, sizeof(msg),
                    "range %" PRIdVARNUMBER " - %" PRIdVARNUMBER ",",
-                   lower, upper);
+                   lower, upper);  // -V576
       fill_assert_error(&ga, &argvars[3], (char_u *)msg, NULL, &argvars[2],
                         ASSERT_INRANGE);
       assert_error(&ga);

src/nvim/ex_cmds2.c

@@ -1950,7 +1950,7 @@ static int source_using_linegetter(void *cookie, LineGetter fgetline, const char
     snprintf((char *)sourcing_name_buf, sizeof(sourcing_name_buf),
              "%s called at %s:%" PRIdLINENR, traceback_name, save_sourcing_name,
              save_sourcing_lnum);
-    sourcing_name = sourcing_name_buf;
+    sourcing_name = sourcing_name_buf;  // -V507 reassigned below, before return.
   }
   sourcing_lnum = 0;
 

src/nvim/ex_session.c

@@ -450,11 +450,11 @@ static int put_view(FILE *fd, win_T *wp, int add_edit, unsigned *flagp, int curr
       }
     } else if (fprintf(fd,
                        "let s:l = %" PRIdLINENR " - ((%" PRIdLINENR
-                       " * winheight(0) + %" PRId64 ") / %" PRId64 ")\n",
+                       " * winheight(0) + %d) / %d)\n",
                        wp->w_cursor.lnum,
                        wp->w_cursor.lnum - wp->w_topline,
-                       (int64_t)(wp->w_height_inner / 2),
+                       (wp->w_height_inner / 2),
-                       (int64_t)wp->w_height_inner) < 0) {
+                       wp->w_height_inner) < 0) {
       return FAIL;
     }
     if (fprintf(fd,

src/nvim/memory.c

@@ -170,6 +170,8 @@ void *xrealloc(void *ptr, size_t size)
 
 /// xmalloc() wrapper that allocates size + 1 bytes and zeroes the last byte
 ///
+/// Commonly used to allocate strings, e.g. `char *s = xmallocz(len)`.
+///
 /// @see {xmalloc}
 /// @param size
 /// @return pointer to allocated space. Never NULL