bug#25282: emacs 25,1 crash w/bt

["Hlöðver Sigurðsson" <hlolli@gmail.com>]

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My emacs 25.1 is crashing these days every 3 hours, irrelevant if Im
on my laptop or work computer, and if Im programming in C or
Clojure. Im always using Fedora, and I install emacs either by
compiling from sources or installed from dnf. Just a paste of my last
gdb crash backtrace: https://www.refheap.com/124399

Crashes are on my computer more likely when saveing or simply using the
cursor around a document. I have aggressive indent mode enabled, haven't
ruled that out yet. Looks to me still that something is not right in
intervals.c?

Thanks for all feedback, hope I don't have to downgrade my emacs.

Best,
Hlödver

(the beginning of the trace)
Thread 1 "emacs" received signal SIGSEGV, Segmentation fault.
0x00000000005a0937 in balance_an_interval (i=0x685d630) at intervals.c:443
443    + RIGHT_TOTAL_LENGTH (i->left) - LEFT_TOTAL_LENGTH (i->left);
(gdb) bt
#0  0x00000000005a0937 in balance_an_interval (i=0x685d630) at
intervals.c:443
#1  0x00000000005a0ba5 in balance_possible_root_interval
(interval=<optimized out>) at intervals.c:482
#2  0x00000000005a1749 in find_interval (tree=<optimized out>, position=0)
at intervals.c:673
#3  0x00000000005a4d8e in validate_interval_range (object=<optimized out>,
begin=begin@entry=0x7fffffff0028, end=end@entry=0x7fffffff0028,
force=force@entry=false) at textprop.c:192
#4  0x00000000005a4ffb in Ftext_properties_at (position=<optimized out>,
position@entry=2, object=<optimized out>, object@entry=34216612) at
textprop.c:568
#5  0x00000000005a506c in Fget_text_property (position=position@entry=2,
prop=prop@entry=20256, object=object@entry=34216612) at textprop.c:588
#6  0x00000000004b750c in face_at_string_position (w=<optimized out>,
string=34216612, pos=<optimized out>, bufpos=bufpos@entry=11967,
endptr=endptr@entry=0x7fffffff0158, base_face_id=22, mouse_p=false) at
xfaces.c:6081
#7  0x000000000043e33e in handle_face_prop (it=0x7fffffff61e0) at
xdisp.c:3974
#8  0x000000000043b8da in handle_stop (it=it@entry=0x7fffffff61e0) at
xdisp.c:3371

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