Detecting GLIBC version (DTLS SIGSEGV).

[InverseRE]

The issue was reported before:
#914
#1267
#1170

But seems like, neither of the solutions were implemented.

The main problem here is that the LeakSan can mistakenly detect the glibc version. It detects 2.19 for the real glibc of version 2.25 or higher.
And that causes SIGSEGV later in ScanRangeForPointers function from lsan_common.cc (because DTLS range is illegal).
The condition in DTLS_on_tls_get_addr() function can be false positive: sometimes ((tls_beg % 4096) == sizeof(Glibc_2_19_tls_header)) evaluates to true for pointers from glibc 2.25.

I kindly ask you to do something to avoid these annoying crashes. The LeakSan's code suggests gnu_get_libc_version() in order to limit the supported glibc versions :)

[InverseRE]

Temporarily we disable DTLS with ASAN_OPTIONS=intercept_tls_get_addr=0 to get reports from LeakSan for other storage types.

[boris-kolpackov]

Seeing that this is affecting multiple projects and that no fix seems to be forthcoming, perhaps this test should be disabled by default, at least if using GLIBC?