[NFC][sanitizer] Commit test for #106912

[vitalybuka]

Almost all sanitizers already support the test.

• Tsan does not use DlsymAlloc yet.
• Lsan will support with [lsan] Fix free(NULL) interception during initialization #106912.

memprof,rtsan,nsan are not tested as part of
sanitizer_common, but we should keep them here to
show up when it happen.

[llvmbot]

@llvm/pr-subscribers-compiler-rt-sanitizer

Author: Vitaly Buka (vitalybuka)

Changes

Almost all sanitizers already support the test.

• Tsan does not use DlsymAlloc yet.
• Lsan will support with #106912.

---

Full diff: https://github.com/llvm/llvm-project/pull/108289.diff

1 Files Affected:

• (added) compiler-rt/test/sanitizer_common/TestCases/dlsym_alloc.cpp (+49)

diff --git a/compiler-rt/test/sanitizer_common/TestCases/dlsym_alloc.cpp b/compiler-rt/test/sanitizer_common/TestCases/dlsym_alloc.cpp
new file mode 100644
index 00000000000000..9d61a30d22c1bf
--- /dev/null
+++ b/compiler-rt/test/sanitizer_common/TestCases/dlsym_alloc.cpp
@@ -0,0 +1,49 @@
+// RUN: %clangxx -O0 -pthread %s -o %t && %run %t
+
+// FIXME: TSAN does not use DlsymAlloc.
+// UNSUPPORTED: tsan
+
+// FIXME: https://github.com/llvm/llvm-project/pull/106912
+// XFAIL: lsan
+
+#include <stdlib.h>
+
+const char *test() __attribute__((disable_sanitizer_instrumentation)) {
+  void * volatile p = malloc(3);
+  p = realloc(p, 7);
+  free(p);
+
+  p = calloc(3, 7);
+  free(p);
+
+  free(nullptr);
+
+  return "";
+}
+
+extern "C" const char *__asan_default_options()
+    __attribute__((disable_sanitizer_instrumentation)) {
+  return test();
+}
+
+extern "C" const char *__lsan_default_options()
+    __attribute__((disable_sanitizer_instrumentation)) {
+  return test();
+}
+
+extern "C" const char *__msan_default_options()
+    __attribute__((disable_sanitizer_instrumentation)) {
+  return test();
+}
+
+extern "C" const char *__tsan_default_options()
+    __attribute__((disable_sanitizer_instrumentation)) {
+  return test();
+}
+
+extern "C" const char *__hwasan_default_options()
+    __attribute__((disable_sanitizer_instrumentation)) {
+  return test();
+}
+
+int main(int argc, char **argv) { return 0; }

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