[sanitizer] Allow InternalMmapVector construction with zero capacity.
llvm-svn: 196112
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_common.h b/compiler-rt/lib/sanitizer_common/sanitizer_common.h
index cf8a12d..475a1d8 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_common.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_common.h
@@ -320,8 +320,7 @@
class InternalMmapVector {
public:
explicit InternalMmapVector(uptr initial_capacity) {
- CHECK_GT(initial_capacity, 0);
- capacity_ = initial_capacity;
+ capacity_ = Min(initial_capacity, (uptr)1);
size_ = 0;
data_ = (T *)MmapOrDie(capacity_ * sizeof(T), "InternalMmapVector");
}