[compiler-rt] [scudo] Add `__scudo_get_info` symbol to export stats to a buffer. (PR #130273)

[via llvm-commits]

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@@ -333,6 +333,12 @@ void ScudoCombinedTest<Config>::BasicTest(scudo::uptr SizeLog) {
 
   Allocator->printStats();
   Allocator->printFragmentationInfo();
+
+  {
+    char buffer[256] = {0};
+    EXPECT_LE(0, Allocator->getStats(buffer, sizeof(buffer)));
+    EXPECT_LE(0, Allocator->getFragmentationInfo(buffer, sizeof(buffer)));
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ChiaHungDuan wrote:

Can we change these to  EXPECT_GT(Allocator->..., 0);

Same as the uses in the tests

https://github.com/llvm/llvm-project/pull/130273