diff --git a/.github/workflows/custom/after-install/action.yml b/.github/workflows/custom/after-install/action.yml
index 4d1b978e8..142bc7ff7 100644
--- a/.github/workflows/custom/after-install/action.yml
+++ b/.github/workflows/custom/after-install/action.yml
@@ -38,3 +38,10 @@ runs:
       run: |
         ccache -s
       shell: bash
+
+    # Must happen after R is installed...
+    - name: Define R CMD check error condition
+      # Allow WARNINGs from abort()
+      run: |
+        cat('RCMDCHECK_ERROR_ON="error"\n', file = Sys.getenv("GITHUB_ENV"), append = TRUE)
+      shell: Rscript {0}
diff --git a/src/duckdb/third_party/re2/re2/re2.cc b/src/duckdb/third_party/re2/re2/re2.cc
index 17e9df02e..29982bf8e 100644
--- a/src/duckdb/third_party/re2/re2/re2.cc
+++ b/src/duckdb/third_party/re2/re2/re2.cc
@@ -197,6 +197,8 @@ int RE2::Options::ParseFlags() const {
 }
 
 void RE2::Init(const StringPiece& pattern, const Options& options) {
+  abort();
+
   static std::once_flag empty_once;
   std::call_once(empty_once, []() {
     (void) new (empty_storage) EmptyStorage;