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-rw-r--r--test/asan/TestCases/Linux/mincore.cc34
1 files changed, 34 insertions, 0 deletions
diff --git a/test/asan/TestCases/Linux/mincore.cc b/test/asan/TestCases/Linux/mincore.cc
new file mode 100644
index 000000000000..30f450830fc2
--- /dev/null
+++ b/test/asan/TestCases/Linux/mincore.cc
@@ -0,0 +1,34 @@
+// RUN: %clangxx_asan -std=c++11 -O0 %s -o %t && %run %t
+
+#include <assert.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+int main(void) {
+ unsigned char vec[20];
+ int res;
+ size_t PS = sysconf(_SC_PAGESIZE);
+ void *addr = mmap(nullptr, 20 * PS, PROT_READ | PROT_WRITE,
+ MAP_NORESERVE | MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
+
+ res = mincore(addr, 10 * PS, vec);
+ assert(res == 0);
+ for (int i = 0; i < 10; ++i)
+ assert((vec[i] & 1) == 0);
+
+ for (int i = 0; i < 5; ++i)
+ ((char *)addr)[i * PS] = 1;
+ res = mincore(addr, 10 * PS, vec);
+ assert(res == 0);
+ for (int i = 0; i < 10; ++i)
+ assert((vec[i] & 1) == (i < 5));
+
+ for (int i = 5; i < 10; ++i)
+ ((char *)addr)[i * PS] = 1;
+ res = mincore(addr, 10 * PS, vec);
+ assert(res == 0);
+ for (int i = 0; i < 10; ++i)
+ assert((vec[i] & 1) == 1);
+
+ return 0;
+}