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Fix warnings: tag.c: jumpto_tag(): Np dereference: MI.

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Problem    : Dereference of null pointer @ 2399.
Diagnostic : Multithreading issue.
Rationale  : Error can only occur if global `g_do_tagpreview` changes
             while the function is executing.
Resolution : Use local copy of global var.
This commit is contained in:
Eliseo Martínez
2014-11-14 21:26:24 +01:00
parent 04e42f2ae4
commit 3f420ce0d8
1 changed files with 4 additions and 3 deletions
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7
src/nvim/tag.c
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@@ -2308,6 +2308,7 @@ jumpto_tag (
win_T *curwin_save = NULL;
char_u *full_fname = NULL;
int old_KeyTyped = KeyTyped; /* getting the file may reset it */
const int l_g_do_tagpreview = g_do_tagpreview;
pbuf = xmalloc(LSIZE);
@@ -2364,7 +2365,7 @@ jumpto_tag (
++RedrawingDisabled;
if (g_do_tagpreview != 0) {
if (l_g_do_tagpreview != 0) {
postponed_split = 0; /* don't split again below */
curwin_save = curwin; /* Save current window */
@@ -2396,7 +2397,7 @@ jumpto_tag (
if (keep_help) {
/* A :ta from a help file will keep the b_help flag set. For ":ptag"
* we need to use the flag from the window where we came from. */
if (g_do_tagpreview != 0)
if (l_g_do_tagpreview != 0)
keep_help_flag = curwin_save->w_buffer->b_help;
else
keep_help_flag = curbuf->b_help;
@@ -2542,7 +2543,7 @@ jumpto_tag (
foldOpenCursor();
}
if (g_do_tagpreview != 0
if (l_g_do_tagpreview != 0
&& curwin != curwin_save && win_valid(curwin_save)) {
/* Return cursor to where we were */
validate_cursor();