Update runtime version to 18.08

[Erick555]

No description provided.

[wjt]

I'm afraid that something in my Vim configuration still causes this to segfault as soon as I enter insert mode. (If I move my ~/.vim out of the way it works fine.)

#0  0x00007fffedc578ad in PyModule_Create2 () from /usr/lib/x86_64-linux-gnu/libpython3.7m.so.1.0
#1  0x00007ffff5c49be6 in PyInit__heapq () from /usr/lib/python3.7/lib-dynload/_heapq.cpython-37m-x86_64-linux-gnu.so
#2  0x00005555558a5294 in ?? ()
#3  0x00005555558a330f in ?? ()
#4  0x000055555580086f in ?? ()
#5  0x00005555558009f9 in ?? ()
#6  0x00005555555d89a2 in ?? ()
#7  0x000055555588cd7e in ?? ()
#8  0x00005555557ffcd7 in ?? ()
#9  0x00005555555d7c3d in ?? ()
#10 0x00005555555cf47b in ?? ()
#11 0x00005555555d803d in ?? ()
#12 0x00005555555cf47b in ?? ()
#13 0x00005555555d6b77 in ?? ()
#14 0x00005555555cf47b in ?? ()
#15 0x00005555555d6b77 in ?? ()
#16 0x00005555555cf47b in ?? ()
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#20 0x00005555558018c0 in ?? ()
#21 0x0000555555801b51 in ?? ()
#22 0x00005555558a4397 in ?? ()
#23 0x00005555555d731a in ?? ()
#24 0x000055555588cd7e in ?? ()
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#26 0x000055555588d01f in ?? ()
#27 0x000055555588a095 in ?? ()
#28 0x000055555580086f in ?? ()
#29 0x00005555558009f9 in ?? ()
#30 0x00005555555d89a2 in ?? ()
#31 0x000055555588cd7e in ?? ()
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#40 0x00005555555cf47b in ?? ()
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#45 0x00005555555d731a in ?? ()
#46 0x000055555588cd7e in ?? ()
#47 0x000055555588cff2 in ?? ()
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#49 0x000055555588a095 in ?? ()
#50 0x000055555580086f in ?? ()
#51 0x00005555558009f9 in ?? ()
#52 0x00005555555d89a2 in ?? ()
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#54 0x00005555557ffcd7 in ?? ()
#55 0x00005555555d7c3d in ?? ()
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#73 0x00005555558009f9 in ?? ()
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#77 0x00005555555d7c3d in ?? ()
#78 0x00005555555cf47b in ?? ()
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#80 0x00005555555cf47b in ?? ()
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#85 0x00005555557ffc2b in ?? ()
#86 0x00005555558018c0 in ?? ()
#87 0x0000555555801b51 in ?? ()
#88 0x00005555558a4397 in ?? ()
#89 0x00005555555d731a in ?? ()
#90 0x000055555588cd7e in ?? ()
#91 0x000055555588cff2 in ?? ()
#92 0x000055555588d01f in ?? ()
#93 0x000055555588a095 in ?? ()
#94 0x000055555580086f in ?? ()
#95 0x00005555558009f9 in ?? ()
#96 0x00005555555d89a2 in ?? ()
#97 0x000055555588cd7e in ?? ()
#98 0x00005555557ffcd7 in ?? ()
#99 0x00005555555d7c3d in ?? ()
#100 0x00005555555cf47b in ?? ()
#101 0x00005555555d803d in ?? ()
#102 0x00005555555cf47b in ?? ()
#103 0x00005555555d6b77 in ?? ()
#104 0x00005555555cf47b in ?? ()
#105 0x00005555555d6b77 in ?? ()
#106 0x00005555555cf47b in ?? ()
#107 0x00005555557ffc2b in ?? ()
#108 0x00005555558018c0 in ?? ()
#109 0x0000555555801b51 in ?? ()
#110 0x00005555558a4397 in ?? ()
#111 0x00005555555d731a in ?? ()
#112 0x000055555588cd7e in ?? ()
#113 0x000055555588cff2 in ?? ()
#114 0x000055555588d01f in ?? ()
#115 0x000055555588a095 in ?? ()
#116 0x000055555580086f in ?? ()
#117 0x00005555558009f9 in ?? ()
#118 0x00005555555d89a2 in ?? ()
#119 0x000055555588cd7e in ?? ()
--Type <RET> for more, q to quit, c to continue without paging--
#120 0x00005555557ffcd7 in ?? ()
#121 0x00005555555d7c3d in ?? ()
#122 0x00005555555cf47b in ?? ()
#123 0x00005555555d803d in ?? ()
#124 0x00005555555cf47b in ?? ()
#125 0x00005555555d6b77 in ?? ()
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#142 0x0000555555801b51 in ?? ()
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#144 0x00005555555d731a in ?? ()
#145 0x000055555588cd7e in ?? ()
#146 0x000055555588cff2 in ?? ()
#147 0x000055555588d01f in ?? ()
#148 0x000055555588a095 in ?? ()
#149 0x000055555580086f in ?? ()
#150 0x00005555558009f9 in ?? ()
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#155 0x00005555555cf47b in ?? ()
#156 0x00005555555d803d in ?? ()
#157 0x00005555555cf47b in ?? ()
#158 0x00005555555d6b77 in ?? ()
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#160 0x00005555555d6b77 in ?? ()
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#164 0x0000555555801b51 in ?? ()
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#188 0x00005555557ffc2b in ?? ()
#189 0x00005555558018c0 in ?? ()
#190 0x0000555555801b51 in ?? ()
#191 0x00005555558a4397 in ?? ()
#192 0x000055555588827c in ?? ()
#193 0x00005555558007df in ?? ()
#194 0x00005555558009f9 in ?? ()
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#200 0x00005555558af168 in ?? ()
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#220 0x0000555555644ae1 in ?? ()
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#225 0x00005555555fa25d in ?? ()
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#227 0x00005555556b9e00 in ?? ()
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#229 0x00005555557df25a in ?? ()
#230 0x00005555557e051f in ?? ()
#231 0x00005555555cd4c7 in ?? ()
#232 0x00007ffff6c9803b in __libc_start_main () from /usr/lib/x86_64-linux-gnu/libc.so.6
#233 0x00005555555d8a1a in ?? ()

It's caused by "ultisnips" and looks suspiciously similar to SirVer/ultisnips#1032.

[Erick555]

It seems utilsnips upstream issue. I don't know what we can do about it. You may try running it through Sdk to catch more useful backtrace.

[wjt]

I disagree: if a Vim extension can cause Vim to crash, this is a Vim bug. And the same version of Ultisnips does not cause eg Fedora 29's Vim to crash, even though it is also linked against Python 3.7. So it is evidently possible to compile a Vim which doesn't crash when running this extension.

I compared what's different between Fedora's and this Vim's --version output and the difference is that Fedora uses --enable-python3interp=dynamic rather than --enable-python3interp. This misleadingly-named option causes Vim to dlopen() Python at runtime, rather than (dynamically) linking to it, and changing this configure flag makes this crash go away.

[Erick555]

Perfect! I assume we're good to go with this PR then?

[wjt]

Thanks for the nudge to try to track this down!