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CShellWindow: do not dereference NULL pointers

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additionally, try to shorten the debug messages slightly and make the
output more useful in the error case for my_popen()

Signed-off-by: Thilo Graf <dbt@novatux.de>


Origin commit data
------------------
Commit: f8fc83c496
Author: Stefan Seyfried <seife@tuxbox-git.slipkontur.de>
Date: 2016-01-04 (Mon, 04 Jan 2016)
This commit is contained in:
Stefan Seyfried
2016-01-04 21:08:02 +01:00
committed by vanhofen
parent ff1e81197a
commit 73ebe87a27
1 changed files with 5 additions and 2 deletions
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7
src/gui/widget/shellwindow.cpp
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@@ -80,7 +80,7 @@ void CShellWindow::exec()
if (!f) {
if (res)
*res = -1;
dprintf(DEBUG_NORMAL, "[CShellWindow] [%s - %d] Error! my_popen returns: %d command: %s\n", __func__, __LINE__, *res, cmd.c_str());
dprintf(DEBUG_NORMAL, "[CShellWindow] [%s:%d] Error! my_popen errno: %d command: %s\n", __func__, __LINE__, errno, cmd.c_str());
return;
}
@@ -159,7 +159,10 @@ void CShellWindow::exec()
//callback for line handler
std::string s_output = std::string((output));
OnShellOutputLoop(&s_output, res, &ok);
dprintf(DEBUG_NORMAL, "[CShellWindow] [%s - %d] res=%d ok=%d\n", __func__, __LINE__, *res, ok);
if (res)
dprintf(DEBUG_NORMAL, "[CShellWindow] [%s:%d] res=%d ok=%d\n", __func__, __LINE__, *res, ok);
else
dprintf(DEBUG_NORMAL, "[CShellWindow] [%s:%d] res=NULL ok=%d\n", __func__, __LINE__, ok);
if (lines.size() > lines_max)
lines.pop_front();