Dominique wrote:
> > Travis reported an error found by ASAN in test_terminal.
> > https://travis-ci.org/vim/vim/builds/302986836
> > It looks like this:
> >
> > ==18767== ERROR: AddressSanitizer: heap-use-after-free on address
> > 0x606e00061740 at pc 0x75a165 bp 0x7ffdb4b30490 sp 0x7ffdb4b30488
> > READ of size 8 at 0x606e00061740 thread T0
> > #0 0x75a164 (/home/travis/build/vim/vim/src/vim+0x75a164)
> > #1 0x4bda78 (/home/travis/build/vim/vim/src/vim+0x4bda78)
> > #2 0x779be3 (/home/travis/build/vim/vim/src/vim+0x779be3)
> > #3 0x77a235 (/home/travis/build/vim/vim/src/vim+0x77a235)
> >
> > I have been unable to reproduce this (with valgrind).
> > I did once have the test crash. But unable to repeat it.
> >
> > It would be very helpful if these stack traces would show file
> > locations. Can we make that happen?
>
> When using clang -fsanitize=address, you either need to
> to set up ASAN_SYMBOLIZER_PATH env variable as
> described here:
>
> https://github.com/google/sanitizers/wiki/AddressSanitizerCallStack
>
> ... or you can filter the asan report with the asan_symbolize.py
> script to see function names:
>
> $ asan_symbolize.py < asan.log
>
> See:
> https://github.com/llvm-mirror/compiler-rt/blob/master/lib/asan/scripts/asan_symbolize.py
>
> When gcc -fsanitize=address (instead of clang -fsanitize=address), gcc
> conveniently
> shows function names automatically. See comments in:
>
> https://tsdgeos.blogspot.nl/2014/03/asan-and-gcc-how-to-get-line-numbers-in.html
>
> Asan implementation in gcc and clang have other differences. See:
>
> https://https://github.com/google/sanitizers/wiki/AddressSanitizerClangVsGCC-(3.8-vs-6.0)github.com/google/sanitizers/wiki/AddressSanitizerClangVsGCC-(3.8-vs-6.0)
>
> This links says:
>
> === BEGIN QUOTE ==
> GCC uses embedded libbacktrace library for symbolization that's statically
> linked with libasan. LLVM needs a separate llvm-symbolizer binary to
> print nice reports.C uses embedded libbacktrace library for symbolization
> that's statically linked with libasan. LLVM needs a separate
> llvm-symbolizer binary to print nice reports.
> === END QUOTE ==
Thanks. Now if someone can turn that in the Travis instructions...
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