diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 1c439ea4..36d9f756 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -44,7 +44,7 @@ jobs:
           php-version: ${{ matrix.php }}
           coverage: none
           extensions: embed
-          ini-values: precision=17, memory_limit=4G, error_reporting=E_ERROR|E_WARNING, display_errors=1, log_errors=0
+          ini-values: precision=17, memory_limit=4G, error_reporting=E_ERROR|E_WARNING, display_errors=1, display_startup_errors=1, log_errors=0
           tools: composer:v2
 
       - name: Patch php_hash.h C++ compatibility
@@ -115,7 +115,7 @@ jobs:
           php-version: ${{ matrix.php }}
           coverage: none
           extensions: embed, curl, redis, mbstring, ffi
-          ini-values: ffi.enable=1, phpy.enable_operator_overloading=0, precision=17, memory_limit=4G, error_reporting=E_ERROR|E_WARNING, display_errors=1, log_errors=0
+          ini-values: ffi.enable=1, phpy.enable_operator_overloading=0, precision=17, memory_limit=4G, error_reporting=E_ERROR|E_WARNING, display_errors=1, display_startup_errors=1, log_errors=0
           tools: composer:v2
 
       - name: Patch php_hash.h C++ compatibility
@@ -181,7 +181,7 @@ jobs:
           php-version: ${{ matrix.php }}
           coverage: none
           extensions: embed, curl, redis, mbstring, ffi
-          ini-values: ffi.enable=1, phpy.enable_operator_overloading=0, precision=17, memory_limit=4G, error_reporting=E_ERROR|E_WARNING, display_errors=1, log_errors=0
+          ini-values: ffi.enable=1, phpy.enable_operator_overloading=0, opcache.jit=0, precision=17, memory_limit=4G, error_reporting=E_ERROR|E_WARNING, display_errors=1, display_startup_errors=1, log_errors=0
           tools: composer:v2
 
       - name: Patch php_hash.h C++ compatibility
@@ -238,7 +238,7 @@ jobs:
       - name: Run compiler PHPT suite with bootstrap compiler
         run: |
           mkdir -p build
-          php run-tests.php -q -j4 --compiler ./tpc \
+          php run-tests.php -q -j8 --compiler ./tpc \
             -w build/failed-tests.txt -W build/test-results.txt tests/compiler
 
       - name: Upload PHPT failure artifacts
diff --git a/tests/compiler/include_require/001.phpt b/tests/compiler/include_require/001.phpt
index 56eedaa1..d30c8c2d 100644
--- a/tests/compiler/include_require/001.phpt
+++ b/tests/compiler/include_require/001.phpt
@@ -2,6 +2,7 @@
 include/require unwind safely when ZendVM calls a compiled function that throws
 --ENV--
 PHPRC=tests/compiler/include_require/no-leak.ini
+PHP_INI_SCAN_DIR={PWD}/empty-ini-dir
 --FILE--
 <?php
 declare(strict_types=1);
diff --git a/tests/compiler/include_require/empty-ini-dir/.gitkeep b/tests/compiler/include_require/empty-ini-dir/.gitkeep
new file mode 100644
index 00000000..8b137891
--- /dev/null
+++ b/tests/compiler/include_require/empty-ini-dir/.gitkeep
@@ -0,0 +1 @@
+
diff --git a/tests/compiler/include_require/no-leak.ini b/tests/compiler/include_require/no-leak.ini
index 526636d7..e18c32ab 100644
--- a/tests/compiler/include_require/no-leak.ini
+++ b/tests/compiler/include_require/no-leak.ini
@@ -1 +1 @@
-report_memleaks=0
+; Keep a dedicated empty configuration so this test does not inherit local PHP settings.
diff --git a/tests/compiler/python/empty-ini-dir/.gitkeep b/tests/compiler/python/empty-ini-dir/.gitkeep
new file mode 100644
index 00000000..8b137891
--- /dev/null
+++ b/tests/compiler/python/empty-ini-dir/.gitkeep
@@ -0,0 +1 @@
+
diff --git a/tests/compiler/python/missing-phpy.phpt b/tests/compiler/python/missing-phpy.phpt
index ee30883e..530667df 100644
--- a/tests/compiler/python/missing-phpy.phpt
+++ b/tests/compiler/python/missing-phpy.phpt
@@ -2,6 +2,7 @@
 Using a Python module without phpy raises a catchable PHP Error
 --ENV--
 PHPRC=tests/compiler/python/empty.ini
+PHP_INI_SCAN_DIR={PWD}/empty-ini-dir
 --FILE--
 <?php
 use python\math;
diff --git a/tests/compiler/ref/ref-call-arg.phpt b/tests/compiler/ref/ref-call-arg.phpt
index 07f3e9da..3452f0f5 100644
--- a/tests/compiler/ref/ref-call-arg.phpt
+++ b/tests/compiler/ref/ref-call-arg.phpt
@@ -4,8 +4,15 @@ ref call arg
 <?php
 function main()
 {
+    $path = tempnam(sys_get_temp_dir(), 'typephp-ref-');
     $zip = new ZipArchive();
-    $path = realpath(__DIR__ . '/../../../../data/test.zip');
+    $zip->open($path, ZipArchive::CREATE | ZipArchive::OVERWRITE);
+    for ($idx = 0; $idx < 4; $idx++) {
+        $zip->addFromString('entry-' . $idx, 'data');
+        $zip->setExternalAttributesIndex($idx, ZipArchive::OPSYS_UNIX, 0100644 << 16);
+    }
+    $zip->close();
+
     if ($zip->open($path) === TRUE) {
         for ($idx = 0; $s = $zip->statIndex($idx); $idx++) {
             $rs = $zip->getExternalAttributesIndex($idx, $opsys, $attr);
@@ -14,6 +21,7 @@ function main()
         $zip->close();
         echo "OK\n";
     }
+    unlink($path);
 
     $str = "first=value&arr[]=foo+bar&arr[]=baz";
     parse_str($str, $output);
@@ -27,21 +35,21 @@ function main()
 bool(true)
 int(0)
 int(3)
-int(1107099648)
+int(2175008768)
 bool(true)
 int(1)
 int(3)
-int(2176057344)
+int(2175008768)
 bool(true)
 int(2)
 int(3)
-int(2176057344)
+int(2175008768)
 bool(true)
 int(3)
 int(3)
-int(2176057344)
+int(2175008768)
 OK
 value
 foo bar
 baz
-DONE
\ No newline at end of file
+DONE