Fix coverage-related asan tests for VS 2015

printf is an inline function in VS 2015, giving these tests an
unexpected extra point of coverage. This change works around that by
avoiding printf.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@264010 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 9 insertions, 2 deletions

diff --git a/test/asan/TestCases/Windows/coverage-basic.cc b/test/asan/TestCases/Windows/coverage-basic.cc
index 0ff105d16..918872f18 100644
--- a/test/asan/TestCases/Windows/coverage-basic.cc
+++ b/test/asan/TestCases/Windows/coverage-basic.cc
@@ -6,8 +6,8 @@
 // RUN: %sancov print *.sancov | FileCheck %s
 #include <stdio.h>
 
-void foo() { fprintf(stderr, "FOO\n"); }
-void bar() { fprintf(stderr, "BAR\n"); }
+void foo() { fputs("FOO", stderr); }
+void bar() { fputs("BAR", stderr); }
 
 int main(int argc, char **argv) {
   if (argc == 2) {
diff --git a/test/asan/TestCases/coverage-reset.cc b/test/asan/TestCases/coverage-reset.cc
index eb8da8c1a..11c5ef66e 100644
--- a/test/asan/TestCases/coverage-reset.cc
+++ b/test/asan/TestCases/coverage-reset.cc
@@ -13,6 +13,13 @@ static volatile int sink;
 __attribute__((noinline)) void bar() { sink = 2; }
 __attribute__((noinline)) void foo() { sink = 1; }
 
+// In MSVC 2015, printf is an inline function, which causes this test to fail as
+// it introduces an extra coverage point. Define away printf on that platform to
+// avoid the issue.
+#if _MSC_VER >= 1900
+# define printf(arg, ...)
+#endif
+
 #define GET_AND_PRINT_COVERAGE()                                       \
   bitset = 0;                                                  \
   for (size_t i = 0; i < n_guards; i++)                        \