drop legacy compiler versions from GitHub workflow

Update from bookworm to trixie, updating GKIs, and changing to Android 16.

.github/workflows/build-and-test.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        version: [12, 13, 14]
+        version: [14]
     steps:
       - uses: actions/checkout@v5
       - name: Setting up gcc version
@@ -24,11 +24,11 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        version: [14, 15, 16, 17, 18]
+        version: [19, 20]
     steps:
       - uses: actions/checkout@v5
       - name: Install dependencies
-        run: sudo apt-get update && sudo apt-get install -y --no-install-recommends clang-14 clang-15
+        run: sudo apt-get update && sudo apt-get install -y --no-install-recommends clang-19 clang-20
       - name: Setting up clang version
         run: |
           sudo update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-${{ matrix.version }} 100

README.md

@@ -65,14 +65,14 @@ used instead as this allocator fundamentally doesn't support that environment.
 
 ## Dependencies
 
-Debian stable (currently Debian 12) determines the most ancient set of
+Debian stable (currently Debian 13) determines the most ancient set of
 supported dependencies:
 
-* glibc 2.36
-* Linux 6.1
-* Clang 14.0.6 or GCC 12.2.0
+* glibc 2.41
+* Linux 6.12
+* Clang 19.1.7 or GCC 14.2.0
 
-For Android, the Linux GKI 5.10, 5.15 and 6.1 branches are supported.
+For Android, the Linux GKI 6.1, 6.6 and 6.12 branches are supported.
 
 However, using more recent releases is highly recommended. Older versions of
 the dependencies may be compatible at the moment but are not tested and will
@@ -83,7 +83,7 @@ there will be custom integration offering better performance in the future
 along with other hardening for the C standard library implementation.
 
 For Android, only the current generation, actively developed maintenance branch of the Android
-Open Source Project will be supported, which currently means `android15-release`.
+Open Source Project will be supported, which currently means `android16-release`.
 
 ## Testing
 
@@ -159,8 +159,11 @@ line to the `/etc/ld.so.preload` configuration file:
 The format of this configuration file is a whitespace-separated list, so it's
 good practice to put each library on a separate line.
 
-On Debian systems `libhardened_malloc.so` should be installed into `/usr/lib/`
-to avoid preload failures caused by AppArmor profile restrictions.
+For maximum compatibility `libhardened_malloc.so` can be installed into
+`/usr/lib/` to avoid preload failures caused by AppArmor profiles or systemd
+ExecPaths= restrictions. Check for logs of the following format:
+
+    ERROR: ld.so: object '/usr/local/lib/libhardened_malloc.so' from /etc/ld.so.preload cannot be preloaded (failed to map segment from shared object): ignored.
 
 Using the `LD_PRELOAD` environment variable to load it on a case-by-case basis
 will not work when `AT_SECURE` is set such as with setuid binaries. It's also

androidtest/memtag/memtag_test.cc

@@ -44,7 +44,7 @@ void *set_pointer_tag(void *ptr, u8 tag) {
     return (void *) (((uintptr_t) tag << 56) | (uintptr_t) untag_pointer(ptr));
 }
 
-// This test checks that slab slot allocation uses tag that is distint from tags of its neighbors
+// This test checks that slab slot allocation uses tag that is distinct from tags of its neighbors
 // and from the tag of the previous allocation that used the same slot
 void tag_distinctness() {
     // tag 0 is reserved

test/test_smc.py

@@ -98,7 +98,7 @@ class TestSimpleMemoryCorruption(unittest.TestCase):
         self.assertEqual(stderr.decode("utf-8"),
                          "fatal allocator error: invalid free\n")
 
-    def test_invalid_malloc_usable_size_small_quarantene(self):
+    def test_invalid_malloc_usable_size_small_quarantine(self):
         _stdout, stderr, returncode = self.run_test(
             "invalid_malloc_usable_size_small_quarantine")
         self.assertEqual(returncode, -6)