Jakson Alves de Aquino <jalve...@gmail.com> wrote:
> Hi,
>
> When I am editing an Rnoweb file and start R with the
> Vim-R-plugin, Vim crashes:
>
> (gdb) bt
> #0 0x00000000005c75c8 in syn_current_attr (syncing=0, displaying=1,
> can_spell=0x0, keep_state=0) at syntax.c:2101
> #1 0x00000000005c6da6 in get_syntax_attr (col=0, can_spell=0x0,
> keep_state=0) at syntax.c:1854
> #2 0x0000000000586dcc in win_line (wp=0x8d3720, lnum=15, startrow=14,
> endrow=28, nochange=1) at screen.c:4354
> #3 0x00000000005823bf in win_update (wp=0x8d3720) at screen.c:2011
> #4 0x000000000057f9d1 in update_screen (type=40) at screen.c:678
> #5 0x00000000005dfbed in set_shellsize (width=0, height=0, mustset=0) at
> term.c:3174
> #6 0x00000000005df9d1 in shell_resized () at term.c:3036
> #7 0x0000000000548332 in handle_resize () at os_unix.c:487
> #8 0x000000000054820b in mch_inchar (buf=0xc3d558 "", maxlen=71, wtime=0,
> tb_change_cnt=21) at os_unix.c:399
> #9 0x00000000005e403e in ui_inchar (buf=0xc3d558 "", maxlen=71, wtime=0,
> tb_change_cnt=21) at ui.c:199
> #10 0x00000000004d05c2 in inchar (buf=0xc3d558 "", maxlen=215, wait_time=0,
> tb_change_cnt=21) at getchar.c:3098
> #11 0x00000000004d01ae in vgetorpeek (advance=0) at getchar.c:2873
> #12 0x00000000004ce91c in vpeekc () at getchar.c:1875
> #13 0x00000000004ce9b7 in char_avail () at getchar.c:1925
> #14 0x0000000000591b48 in redrawing () at screen.c:10421
> #15 0x000000000057f4bb in update_screen (type=10) at screen.c:500
> #16 0x000000000062a6bc in main_loop (cmdwin=0, noexmode=0) at main.c:1237
> #17 0x000000000062a215 in main (argc=4, argv=0x7fffffffdc88) at main.c:1034
> (gdb)
>
> Rnoweb files combine LaTeX and R code. When R starts, it sends a
> message to Vim using the clientserver feature. The message is a
> list of loaded packages and Vim reacts to the message updating the
> syntax of R functions. To update the syntax of R code, Vim sources
> syntax scripts which add the new functions and then run the
> following command:
>
> silent exe 'set filetype=' . &filetype
>
> I first noted the crash on Monday.
>
> I build Vim from mercurial repository and, to get the backtrace
> with gdb, I have configured the build with the command:
>
> CFLAGS=-g ./configure --enable-pythoninterp=yes --enable-multibyte
>
> Thanks!
Hi
In the stack, I see update_screen() being called twice as
a result of a screen resize event. Maybe that's causing the
problem.
I don't know how to reproduce it.
Can you try to reproduce it after recompiling Vim with the
address sanitizer (asan)? It's only a matter of compiling
and linking with -fsanitize=address. It assumes that your
compiler is recent enough (gcc >= 4.8 or clang >= 3.3?)
You can do with the following patch:
diff -r 84171683fd66 src/Makefile
--- a/src/Makefile Tue Jan 27 22:52:15 2015 +0100
+++ b/src/Makefile Sat Jan 31 00:13:29 2015 +0100
@@ -616,6 +616,10 @@
#PROFILE_LIBS = -pg
#PROFILE_LIBS = -pg -lc
+# Uncomment the next two lines compile Vim with the address sanitizer.
+SANITIZER_CFLAGS = -g -O0 -fsanitize=address -fno-omit-frame-pointer
+SANITIZER_LIBS = $(SANITIZER_CFLAGS)
+
# MEMORY LEAK DETECTION
# Requires installing the ccmalloc library.
# Configuration is in the .ccmalloc or ~/.ccmalloc file.
@@ -1342,7 +1346,7 @@
PRE_DEFS = -Iproto $(DEFS) $(GUI_DEFS) $(GUI_IPATH) $(CPPFLAGS) $(EXTRA_IPATHS)
POST_DEFS = $(X_CFLAGS) $(MZSCHEME_CFLAGS) $(TCL_CFLAGS) $(EXTRA_DEFS)
-ALL_CFLAGS = $(PRE_DEFS) $(CFLAGS) $(PROFILE_CFLAGS) $(LEAK_CFLAGS)
$(POST_DEFS)
+ALL_CFLAGS = $(PRE_DEFS) $(CFLAGS) $(PROFILE_CFLAGS)
$(SANITIZER_CFLAGS) $(LEAK_CFLAGS) $(POST_DEFS)
# Exclude $CFLAGS for osdef.sh, for Mac 10.4 some flags don't work together
# with "-E".
@@ -1374,6 +1378,7 @@
$(TCL_LIBS) \
$(RUBY_LIBS) \
$(PROFILE_LIBS) \
+ $(SANITIZER_LIBS) \
$(LEAK_LIBS)
# abbreviations
Please also try to run vim with valgrind (without building with asan)
It may find other bugs than asan: uninitialized memory accesses
are not found by asan but they are found by valgrind.
Regards
Dominique
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