ci: add dev build to serve as canary

Hopefully to fail earlier and including some non standard options

.github/workflows/build.yml

@@ -14,7 +14,7 @@ jobs:
         run: ./autogen.sh
 
       - name: Configure
-        run: ./configure CPPFLAGS='-Wall -Wextra' --enable-jit --enable-pcre2-8 --enable-pcre2-16 --enable-pcre2-32
+        run: ./configure CPPFLAGS='-Wall -Wextra' --enable-jit --enable-pcre2-16 --enable-pcre2-32
 
       - name: Build
         run: make
@@ -43,7 +43,7 @@ jobs:
         run: ./autogen.sh
 
       - name: Configure
-        run: ./configure CPPFLAGS='-Wall -Wextra' --enable-jit --enable-pcre2-8 --enable-pcre2-16 --enable-pcre2-32
+        run: ./configure CPPFLAGS='-Wall -Wextra' --enable-jit --enable-pcre2-16 --enable-pcre2-32
 
       - name: Build
         run: make

.github/workflows/dev.yml

@@ -0,0 +1,31 @@
+name: Dev
+on: [push, pull_request]
+
+jobs:
+  linux:
+    name: dev
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Autogen
+        run: ./autogen.sh
+
+      - name: Configure
+        run: ./configure CC='gcc -fsanitize=undefined,address' CPPFLAGS='-Wall -Wextra -Werror -Wno-error=unused-but-set-parameter' --enable-jit --enable-pcre2-16 --enable-pcre2-32 --enable-debug --with-link-size=4
+
+      - name: Build
+        run: make -j2
+
+      - name: Test (main test script)
+        run: ./RunTest
+
+      - name: Test (JIT test program)
+        run: ./pcre2_jit_test
+
+      - name: Test (pcre2grep test script)
+        run: ./RunGrepTest
+
+      - name: Test (pcre2posix test program)
+        run: ./pcre2posix_test -v

src/pcre2_jit_simd_inc.h

@@ -496,7 +496,7 @@ struct sljit_jump *jump[2];
 int i;
 
 SLJIT_ASSERT(common->mode == PCRE2_JIT_COMPLETE && offs1 > offs2 && offs2 >= 0);
-SLJIT_ASSERT(diff <= IN_UCHARS(max_fast_forward_char_pair_offset()));
+SLJIT_ASSERT(diff <= (unsigned)IN_UCHARS(max_fast_forward_char_pair_offset()));
 
 /* Initialize. */
 if (common->match_end_ptr != 0)