Em Sun, 28 Jun 2020 23:41:46 +0900
Masahiro Yamada <[email protected]> escreveu:

> On Sun, Jun 28, 2020 at 9:21 PM Mauro Carvalho Chehab
> <[email protected]> wrote:
> >
> > The Qt5 conversion broke support for debug info links.
> >
> > Restore the behaviour added by changeset
> > ab45d190fd4a ("kconfig: create links in info window").
> >
> > Reported-by: Maxim Levitsky <[email protected]>
> > Signed-off-by: Mauro Carvalho Chehab <[email protected]>  
> 
> 
> I tested this patch, but this caused
> segmentation fault.
> 
> 
> I enabled 'Show Debug Info',
> and then clicked
> dep: <symbol name>.
> 
> Then, xconfig crashed.
> 
> (without this patch, it did not cause
> segfault at least)
> 
> Did you see this?

Could you please try the attached version? It should validate again the
symbols, instead of relying on a pointer passed via an URL.

This version still passes pointers via URLs for menus, though,
as it doesn't implement any logic for seeking the menu->prompt
string.

With this version, if something bad happens when parsing a
symbol internal URL, the code will print a message and ignore
it.

Thanks,
Mauro

[PATCH] kconfig: qconf: make debug links work again

The Qt5 conversion broke support for debug info links.

Restore the behaviour added by changeset
ab45d190fd4a ("kconfig: create links in info window").

Reported-by: Maxim Levitsky <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

diff --git a/scripts/kconfig/qconf.cc b/scripts/kconfig/qconf.cc
index 631e19659504..7dae5c5989db 100644
--- a/scripts/kconfig/qconf.cc
+++ b/scripts/kconfig/qconf.cc
@@ -7,6 +7,7 @@
 #include <QAction>
 #include <QApplication>
 #include <QCloseEvent>
+#include <QDebug>
 #include <QDesktopWidget>
 #include <QFileDialog>
 #include <QLabel>
@@ -1012,7 +1013,7 @@ ConfigInfoView::ConfigInfoView(QWidget* parent, const 
char *name)
        : Parent(parent), sym(0), _menu(0)
 {
        setObjectName(name);
-
+       setOpenLinks(false);
 
        if (!objectName().isEmpty()) {
                configSettings->beginGroup(objectName());
@@ -1085,7 +1086,7 @@ void ConfigInfoView::menuInfo(void)
                        if (sym->name) {
                                head += " (";
                                if (showDebug())
-                                       head += QString().sprintf("<a 
href=\"s%p\">", sym);
+                                       head += QString().sprintf("<a 
href=\"s%s\">", sym->name);
                                head += print_filter(sym->name);
                                if (showDebug())
                                        head += "</a>";
@@ -1094,7 +1095,7 @@ void ConfigInfoView::menuInfo(void)
                } else if (sym->name) {
                        head += "<big><b>";
                        if (showDebug())
-                               head += QString().sprintf("<a href=\"s%p\">", 
sym);
+                               head += QString().sprintf("<a href=\"s%s\">", 
sym->name);
                        head += print_filter(sym->name);
                        if (showDebug())
                                head += "</a>";
@@ -1217,13 +1218,56 @@ void ConfigInfoView::expr_print_help(void *data, struct 
symbol *sym, const char
        QString str2 = print_filter(str);
 
        if (sym && sym->name && !(sym->flags & SYMBOL_CONST)) {
-               *text += QString().sprintf("<a href=\"s%p\">", sym);
+               *text += QString().sprintf("<a href=\"s%s\">", sym->name);
                *text += str2;
                *text += "</a>";
        } else
                *text += str2;
 }
 
+void ConfigInfoView::clicked(const QUrl &url)
+{
+       QByteArray str = url.toEncoded();
+       const std::size_t count = str.size();
+       char *hex = new char[count + 1];
+       char type;
+       struct symbol **result;
+
+       if (count < 1) {
+               qInfo() << "Clicked link is empty";
+               return;
+       }
+
+       memcpy(hex, str.constData(), count);
+       type = hex[0];
+
+       if (type == 's') {
+               /* Seek for exact match */
+               hex[0] = '^';
+               strcat(hex, "$");
+               result = sym_re_search(hex);
+               if (!result) {
+                       qInfo() << "Clicked symbol is invalid";
+                       return;
+               }
+
+               sym = *result;
+               symbolInfo();
+       } else {
+               unsigned long p = (int)strtol(hex + 1, NULL, 16);
+               if (!p) {
+                       qInfo() << "Clicked menu is invalid";
+                       return;
+               }
+
+               struct menu *m = (struct menu *)p;
+
+               _menu = m;
+               menuInfo();
+       }
+       emit showDebugChanged(true);
+}
+
 QMenu* ConfigInfoView::createStandardContextMenu(const QPoint & pos)
 {
        QMenu* popup = Parent::createStandardContextMenu(pos);
@@ -1497,6 +1541,9 @@ ConfigMainWindow::ConfigMainWindow(void)
        helpMenu->addAction(showIntroAction);
        helpMenu->addAction(showAboutAction);
 
+       connect (helpText, SIGNAL (anchorClicked (const QUrl &)),
+                helpText, SLOT (clicked (const QUrl &)) );
+
        connect(configList, SIGNAL(menuChanged(struct menu *)),
                helpText, SLOT(setInfo(struct menu *)));
        connect(configList, SIGNAL(menuSelected(struct menu *)),
diff --git a/scripts/kconfig/qconf.h b/scripts/kconfig/qconf.h
index d913a02967ae..a193137f2314 100644
--- a/scripts/kconfig/qconf.h
+++ b/scripts/kconfig/qconf.h
@@ -250,6 +250,7 @@ public slots:
        void setInfo(struct menu *menu);
        void saveSettings(void);
        void setShowDebug(bool);
+       void clicked (const QUrl &url);
 
 signals:
        void showDebugChanged(bool);

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