[sanitizer] Try to fix LargeMmapAllocator test on Windows
This test attempts to allocate 100 512MB aligned pages of memory. This
is implemented in the usual way by allocating size + alignment bytes and
aligning the result. As a result, this test allocates 51.2GB of memory.
Windows allocates swap for all memory allocated, and our bots do not
have this much swap available.
Avoid the failure by using a more reasonable alignment, like 16MB, as we
do on 32-bit.
llvm-svn: 276779
diff --git a/compiler-rt/lib/sanitizer_common/tests/sanitizer_allocator_test.cc b/compiler-rt/lib/sanitizer_common/tests/sanitizer_allocator_test.cc
index c9d3609..03f765b 100644
--- a/compiler-rt/lib/sanitizer_common/tests/sanitizer_allocator_test.cc
+++ b/compiler-rt/lib/sanitizer_common/tests/sanitizer_allocator_test.cc
@@ -392,8 +392,10 @@
}
CHECK_EQ(a.TotalMemoryUsed(), 0);
- // Test alignments.
- uptr max_alignment = SANITIZER_WORDSIZE == 64 ? (1 << 28) : (1 << 24);
+ // Test alignments. Test with 512MB alignment on x64 non-Windows machines.
+ // Windows doesn't overcommit, and many machines do not have 51.2GB of swap.
+ uptr max_alignment =
+ (SANITIZER_WORDSIZE == 64 && !SANITIZER_WINDOWS) ? (1 << 28) : (1 << 24);
for (uptr alignment = 8; alignment <= max_alignment; alignment *= 2) {
const uptr kNumAlignedAllocs = 100;
for (uptr i = 0; i < kNumAlignedAllocs; i++) {