[Sanitizers] Move pvalloc overflow tests to common.

Summary:
Now all sanitizers with improved allocator error reporting are covered
by these common tests.

Also, add pvalloc-specific checks to LSan.

HWASan is not covered by sanitizer_common, hence its own pvalloc
and other allocator tests.

Reviewers: vitalybuka

Subscribers: srhines, kubamracek, delcypher, #sanitizers, llvm-commits

Differential Revision: https://reviews.llvm.org/D47970

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@334424 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 46 insertions, 0 deletions

diff --git a/test/sanitizer_common/TestCases/Linux/pvalloc-overflow.cc b/test/sanitizer_common/TestCases/Linux/pvalloc-overflow.cc
new file mode 100644
index 000000000..93421af19
--- /dev/null
+++ b/test/sanitizer_common/TestCases/Linux/pvalloc-overflow.cc
@@ -0,0 +1,46 @@
+// RUN: %clangxx %collect_stack_traces -O0 %s -o %t
+// RUN: %env_tool_opts=allocator_may_return_null=0 not %run %t m1 2>&1 | FileCheck %s
+// RUN: %env_tool_opts=allocator_may_return_null=1     %run %t m1 2>&1 | FileCheck %s --check-prefix=CHECK-NULL
+// RUN: %env_tool_opts=allocator_may_return_null=0 not %run %t psm1 2>&1 | FileCheck %s
+// RUN: %env_tool_opts=allocator_may_return_null=1     %run %t psm1 2>&1 | FileCheck %s --check-prefix=CHECK-NULL
+
+// REQUIRES: stable-runtime
+
+// UNSUPPORTED: android, freebsd, netbsd, tsan, ubsan
+
+// Checks that pvalloc overflows are caught. If the allocator is allowed to
+// return null, the errno should be set to ENOMEM.
+
+#include <assert.h>
+#include <errno.h>
+#include <malloc.h>
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+
+int main(int argc, char *argv[]) {
+  assert(argc == 2);
+  const char *action = argv[1];
+
+  const size_t page_size = sysconf(_SC_PAGESIZE);
+
+  void *p = nullptr;
+  if (!strcmp(action, "m1")) {
+    p = pvalloc((uintptr_t)-1);
+  } else if (!strcmp(action, "psm1")) {
+    p = pvalloc((uintptr_t)-(page_size - 1));
+  } else {
+    assert(0);
+  }
+
+  fprintf(stderr, "errno: %d\n", errno);
+
+  return p != nullptr;
+}
+
+// CHECK: {{ERROR: .*Sanitizer: pvalloc parameters overflow: size .* rounded up to system page size .* cannot be represented in type size_t}}
+// CHECK: {{#0 0x.* in .*pvalloc}}
+// CHECK: {{#1 0x.* in main .*pvalloc-overflow.cc:}}
+// CHECK: {{SUMMARY: .*Sanitizer: pvalloc-overflow}}
+
+// CHECK-NULL: errno: 12