From bc1f9b219edc906f664dd16a6f3a7a7b51faad78 Mon Sep 17 00:00:00 2001
From: Evgeniy Stepanov <eugeni.stepanov@gmail.com>
Date: Thu, 27 Jul 2017 23:22:37 +0000
Subject: [sancov] Implement __sanitizer_cov_reset.

Summary: Clears all collected coverage.

Reviewers: kcc

Subscribers: srhines, kubamracek, llvm-commits

Differential Revision: https://reviews.llvm.org/D35958

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@309333 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/asan/TestCases/Posix/coverage-reset.cc | 65 +++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 test/asan/TestCases/Posix/coverage-reset.cc

(limited to 'test/asan/TestCases/Posix')

diff --git a/test/asan/TestCases/Posix/coverage-reset.cc b/test/asan/TestCases/Posix/coverage-reset.cc
new file mode 100644
index 000000000..e9639b34d
--- /dev/null
+++ b/test/asan/TestCases/Posix/coverage-reset.cc
@@ -0,0 +1,65 @@
+// RUN: %clangxx_asan -fsanitize-coverage=func,trace-pc-guard -DSHARED %s -shared -o %dynamiclib -fPIC %ld_flags_rpath_so
+// RUN: %clangxx_asan -fsanitize-coverage=func,trace-pc-guard %s %ld_flags_rpath_exe -o %t
+// RUN: rm -rf %T/coverage-reset && mkdir -p %T/coverage-reset && cd %T/coverage-reset
+// RUN: %env_asan_opts=coverage=1:verbosity=1 %run %t 2>&1 | FileCheck %s
+//
+// UNSUPPORTED: ios
+
+#include <stdio.h>
+
+#include <sanitizer/coverage_interface.h>
+
+#ifdef SHARED
+void bar1() { printf("bar1\n"); }
+void bar2() { printf("bar2\n"); }
+#else
+__attribute__((noinline)) void foo1() { printf("foo1\n"); }
+__attribute__((noinline)) void foo2() { printf("foo2\n"); }
+void bar1();
+void bar2();
+
+int main(int argc, char **argv) {
+  fprintf(stderr, "RESET");
+  __sanitizer_cov_reset();
+  foo1();
+  foo2();
+  bar1();
+  bar2();
+  __sanitizer_cov_dump();
+// CHECK: RESET
+// CHECK: SanitizerCoverage: ./coverage-reset.cc{{.*}}.sancov: 2 PCs written
+// CHECK: SanitizerCoverage: ./libcoverage-reset.cc{{.*}}.sancov: 2 PCs written
+
+  fprintf(stderr, "RESET");
+  __sanitizer_cov_reset();
+  foo1();
+  bar1();
+  __sanitizer_cov_dump();
+// CHECK: RESET
+// CHECK: SanitizerCoverage: ./coverage-reset.cc{{.*}}.sancov: 1 PCs written
+// CHECK: SanitizerCoverage: ./libcoverage-reset.cc{{.*}}.sancov: 1 PCs written
+
+  fprintf(stderr, "RESET");
+  __sanitizer_cov_reset();
+  foo1();
+  foo2();
+  __sanitizer_cov_dump();
+// CHECK: RESET
+// CHECK: SanitizerCoverage: ./coverage-reset.cc{{.*}}.sancov: 2 PCs written
+
+  fprintf(stderr, "RESET");
+  __sanitizer_cov_reset();
+  bar1();
+  bar2();
+  __sanitizer_cov_dump();
+// CHECK: RESET
+// CHECK: SanitizerCoverage: ./libcoverage-reset.cc{{.*}}.sancov: 2 PCs written
+
+  fprintf(stderr, "RESET");
+  __sanitizer_cov_reset();
+// CHECK: RESET
+
+  bar2();
+// CHECK: SanitizerCoverage: ./libcoverage-reset.cc{{.*}}.sancov: 1 PCs written
+}
+#endif
-- 
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