I believe I have a patch to fix this issue. It is attached.
Taken from: https://www.mail-archive.com/fltk-bugs@easysw.com/msg01159.html
The link was pointed to by the Servo issue that Patrick Smith linked
to. (Thanks, Patrick!)
Patrick, can you please try (from a clean 4.9 dmenu sourcetree) `git
apply fix-xim-failure.patch` and rebuild and test? This solves the
issue for me.
Jordan
Jordan
On Sun, Feb 10, 2019 at 6:29 PM Jordan Timmerman <skor...@gmail.com> wrote:
>
> Patrick,
>
> Can you also try reverting 377bd37e212b1ec4c03a481245603c6560d0be22 ?
>
> It certainly sounds like the same issue I experience; if so, reverting
> that commit will cause dmenu to work correctly again. This may be able
> to help guide your search if you continue debugging.
>
> On Sun, Feb 10, 2019 at 6:18 PM Patrick Smith <pat42sm...@gmail.com> wrote:
> >
> > Another point of information... after seeing
> > https://github.com/servo/servo/issues/9938, I tried these two commands
> > with my instrumented dmenu:
> >
> > >>>> printf 'foo\nbar' | ./dmenu
> > Calling XOpenIM
> > Back from XOpenIM, xim=0x0
> > Calling XCreateIC
> > Back from XCreateIC, xic=0x0
> > xic = 0x0, event type = 2
> > calling XmbLookupString
> > Segmentation fault (core dumped)
> > >>>>
> > >>>> printf 'foo\nbar' | LANG=en_US.UTF-8 ./dmenu
> > Calling XOpenIM
> > Back from XOpenIM, xim=0x67c3b660
> > Calling XCreateIC
> > Back from XCreateIC, xic=0x67c3c3b0
> > xic = 0x67c3c3b0, event type = 2
> > calling XmbLookupString
> > back from XmbLookupString
> > foo
> >
> > In the first case, $LANG is set to my default value, en_CA.UTF-8.
> > There is another difference, not visible in the above output. In the
> > first command, I can press enter immediately after entering the
> > command, and this causes dmenu to terminate with the segfault. In the
> > second case, immediately pressing enter does nothing. I have to move
> > the cursor to the menu prepared by dmenu at the top of the screen, and
> > then press enter (fwiw, my window manager is i3).
> >
> > On Sun, Feb 10, 2019 at 3:54 PM Jordan Timmerman <skor...@gmail.com> wrote:
> > >
> > > With a little finagling, I've managed to produce a backtrace by using
> > > Quentin's suggested flag modifications to config.mk. This is attached.
> > > It seems to me only to confirm what we've already learned: the failure
> > > occurs in XmbLookupString. Perhaps with the additional diagnostic
> > > information Patrick was able to provide we'll figure it out.
> > >
> > > As an aside: thanks to everyone who has patiently helped me figure out
> > > how to provide debugging information! Sorry I can't be more help.
> > >
> > > On Sun, Feb 10, 2019 at 5:39 PM Patrick Smith <pat42sm...@gmail.com>
> > > wrote:
> > > >
> > > > I'm experiencing a problem that appears very similar to this one, and
> > > > I can add a bit of information.
> > > >
> > > > Summary: When I have scim+anthy installed as an input method, the call
> > > > to XOpenIM fails, returning a null pointer. But I don't know much
> > > > about the internals of X, so can't be 100% sure this is the root of
> > > > the problem. Nor do I know what to look at next.
> > > >
> > > > My environment: up to date Arch Linux, dmenu 4.9. For X input methods,
> > > > using scim and anthy by setting environment variables:
> > > >
> > > > export XMODIFIERS=@im=SCIM
> > > > export GTK_IM_MODULE=scim
> > > > export QT_IM_MODULE=scim
> > > >
> > > > To reproduce the crash, I can do
> > > >
> > > > printf 'foo\nbar' | dmenu
> > > >
> > > > and then press return. With the Arch Linux 4.9, this produces a
> > > > segmentation fault. After I downgraded to the Arch version of dmenu
> > > > 4.8, it works correctly.
> > > >
> > > > So I downloaded the 4.9 source code and built it myself, with no
> > > > changes to config.mk or anything else. This version produces still
> > > > produces the segfault.
> > > >
> > > > Then I added debugging code to print some information to stderr. From
> > > > this, I see that the crash seems to be inside XmbLookupString, as
> > > > reported previously; the xic pointer returned from XCreateIC and
> > > > passed to XmbLookupString is null, and the xim pointer returned from
> > > > XOpenIM and passed to XCreateIC is also null.
> > > >
> > > > After this, I restarted X with scim disabled by commenting out the
> > > > exports mentioned above, and retried the printf into dmenu. Now it
> > > > works correctly, and reports that both XOpenIM and XCreateIC return
> > > > non-null pointers.
> > > >
> > > > I'm not sure what to look at next, so I hope that helps someone else
> > > > to diagnose the problem...
> > > >
> >
diff --git a/dmenu.c b/dmenu.c
index f803149..7666f81 100644
--- a/dmenu.c
+++ b/dmenu.c
@@ -666,6 +666,10 @@ setup(void)
/* open input methods */
xim = XOpenIM(dpy, NULL, NULL, NULL);
+ if (!xim) {
+ XSetLocaleModifiers("@im=local");
+ xim = XOpenIM(dpy, NULL, NULL, NULL);
+ }
xic = XCreateIC(xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
XNClientWindow, win, XNFocusWindow, win, NULL);
