diff --git a/.github/workflows/ubuntu-debug.yml b/.github/workflows/ubuntu-debug.yml
new file mode 100644
index 000000000..aa7bb9955
--- /dev/null
+++ b/.github/workflows/ubuntu-debug.yml
@@ -0,0 +1,44 @@
+name: Ubuntu 22.04 Debug
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened, ready_for_review]
+    paths-ignore:
+      - '**.md'
+      - 'docs/**'
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - '**.md'
+      - 'docs/**'
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  ubuntu-build-debug:
+    strategy:
+      fail-fast: false
+      matrix:
+        shared: [OFF]
+        cxx: [g++-12, clang++-15]
+        runs-on: [ubuntu-22.04]
+        simdutf: [OFF, ON]
+    runs-on: ${{matrix.runs-on}}
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+      - name: Setup Ninja
+        run: sudo apt-get install ninja-build
+      - name: Prepare
+        run: cmake -DCMAKE_BUILD_TYPE=Debug -D ADA_TESTING=ON -D ADA_BENCHMARKS=ON -DBUILD_SHARED_LIBS=${{matrix.shared}} -D ADA_USE_SIMDUTF=${{matrix.simdutf}} -G Ninja -B build
+        env:
+          CXX: ${{matrix.cxx}}
+      - name: Build
+        run: cmake --build build -j=4
+      - name: Test
+        run: ctest --output-on-failure --test-dir build --timeout 300
diff --git a/src/url_aggregator.cpp b/src/url_aggregator.cpp
index cfa68a466..a9a623f51 100644
--- a/src/url_aggregator.cpp
+++ b/src/url_aggregator.cpp
@@ -647,16 +647,26 @@ bool url_aggregator::set_host_or_hostname(const std::string_view input) {
   return true;
 }
 
-bool url_aggregator::set_host(const std::string_view input) {
+bool url_aggregator::set_host(std::string_view input) {
   ada_log("url_aggregator::set_host '", input, "'");
   ADA_ASSERT_TRUE(validate());
+  std::string tmp_buffer;
+  if (helpers::overlaps(input, buffer)) {
+    tmp_buffer = input;
+    input = tmp_buffer;
+  }
   ADA_ASSERT_TRUE(!helpers::overlaps(input, buffer));
   return set_host_or_hostname<false>(input);
 }
 
-bool url_aggregator::set_hostname(const std::string_view input) {
+bool url_aggregator::set_hostname(std::string_view input) {
   ada_log("url_aggregator::set_hostname '", input, "'");
   ADA_ASSERT_TRUE(validate());
+  std::string tmp_buffer;
+  if (helpers::overlaps(input, buffer)) {
+    tmp_buffer = input;
+    input = tmp_buffer;
+  }
   ADA_ASSERT_TRUE(!helpers::overlaps(input, buffer));
   return set_host_or_hostname<true>(input);
 }
@@ -1227,6 +1237,11 @@ bool url_aggregator::parse_ipv6(std::string_view input) {
 bool url_aggregator::parse_opaque_host(std::string_view input) {
   ada_log("parse_opaque_host ", input, " [", input.size(), " bytes]");
   ADA_ASSERT_TRUE(validate());
+  std::string tmp_buffer;
+  if (helpers::overlaps(input, buffer)) {
+    tmp_buffer = input;
+    input = tmp_buffer;
+  }
   ADA_ASSERT_TRUE(!helpers::overlaps(input, buffer));
   if (std::ranges::any_of(input, ada::unicode::is_forbidden_host_code_point)) {
     return is_valid = false;
diff --git a/tests/basic_tests.cpp b/tests/basic_tests.cpp
index 579a0c5d7..cfe7f1fca 100644
--- a/tests/basic_tests.cpp
+++ b/tests/basic_tests.cpp
@@ -56,6 +56,16 @@ TYPED_TEST(basic_tests, pluses) {
   SUCCEED();
 }
 
+TYPED_TEST(basic_tests, overlap_test) {
+  auto url = ada::parse<TypeParam>("http://example.com/very_long_path_string");
+  ASSERT_TRUE(url);
+  // This triggers assertion failure in debug mode for url_aggregator
+  // because get_pathname() returns a view into the buffer, and set_hostname()
+  // modifies it.
+  url->set_hostname(url->get_pathname());
+  SUCCEED();
+}
+
 TYPED_TEST(basic_tests, set_host_should_return_false_sometimes) {
   auto r = ada::parse<TypeParam>("mailto:a@b.com");
   ASSERT_FALSE(r->set_host("something"));
diff --git a/tests/wpt/ada_extra_urltestdata.json b/tests/wpt/ada_extra_urltestdata.json
index 93cc0870c..0fac86713 100644
--- a/tests/wpt/ada_extra_urltestdata.json
+++ b/tests/wpt/ada_extra_urltestdata.json
@@ -285,5 +285,20 @@
     "pathname": "b/",
     "search": "",
     "hash": ""
+  },
+  {
+    "input": "http://user:pass@1.2.3.4",
+    "base": "about:blank",
+    "href": "http://user:pass@1.2.3.4/",
+    "origin": "http://1.2.3.4",
+    "protocol": "http:",
+    "username": "user",
+    "password": "pass",
+    "host": "1.2.3.4",
+    "hostname": "1.2.3.4",
+    "port": "",
+    "pathname": "/",
+    "search": "",
+    "hash": ""
   }
 ]