[asan][test] XFAIL global-location-nodebug.cpp on Solaris

[ro]

Summary

A new test FAILs on Solaris:

FAIL: AddressSanitizer-i386-sunos :: TestCases/global-location-nodebug.cpp (465 of 64279)
FAIL: AddressSanitizer-i386-sunos-dynamic :: TestCases/global-location-nodebug.cpp (961 of 64279)

The problem is the unconditional use of -Wl,-S:

ld: fatal: dlopen() of support library (-lstdc++) failed with error: ld.so.1: ld: -lstdc++: open failed: No such file or directory

ld -S has a completely different semantics compared to GNU ld -S/--strip-debug: specify a link-edit support library. To avoid this, I've chosen to XFAIL the test.

Tested on amd64-pc-solaris2.11.

While Solaris ld doesn't support --strip-debug, it has -z strip-class=debug instead, which makes the test PASS. It would be possible to use a substitution (%ld_flags_strip_debug) instead, set in compiler-rt/test/asan/lit.cfg.py. However, this seems like overkill to me.

[hctim]

The other option is to use llvm-strip, but this doesn't naively work with the Android builds.

I think this is fine for now.

compiler-rt/test/asan/TestCases/global-location-nodebug.cpp

 /// Same as global-location.cpp, but without debuginfo. In a separate file to
 /// allow this test to also run on Windows (which can't be done for the
 /// debuginfo variant).
 
 // RUN: %clangxx_asan -O2 %S/global-location.cpp -o %t -Wl,-S
 // RUN: not %run %t g 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=GLOB-NO-G
 // RUN: not %run %t c 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=CLASS_STATIC-NO-G
 // RUN: not %run %t f 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=FUNC_STATIC-NO-G
 // RUN: not %run %t l 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=LITERAL-NO-G
 
+/// Solaris ld -S has different semantics.
+// XFAIL: solaris
+
 // CHECK: AddressSanitizer: global-buffer-overflow
 // CLASS_STATIC-NO-G: 0x{{.*}} is located 4 bytes to the right of global variable 'C::array' defined in '{{.*}}global-location.cpp' {{.*}} of size 40
 // GLOB-NO-G: 0x{{.*}} is located 4 bytes to the right of global variable 'global' defined in '{{.*}}global-location.cpp' {{.*}} of size 40
 // FUNC_STATIC-NO-G: 0x{{.*}} is located 4 bytes to the right of global variable 'array' defined in '{{.*}}global-location.cpp' {{.*}} of size 40
 // LITERAL-NO-G: 0x{{.*}} is located 0 bytes to the right of global variable {{.*}} defined in '{{.*}}global-location.cpp' {{.*}} of size 11
 // CHECK: SUMMARY: AddressSanitizer: global-buffer-overflow