few adjustments

Author: qunaibit

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/MathModuleBuiltins.java

@@ -1996,7 +1996,7 @@ public abstract static class SumprodNode extends PythonBinaryBuiltinNode {
         static boolean int_path(VirtualFrame frame, Node inliningTarget, Object p_i, Object q_i, long[] int_total,
                         PyLongCheckExactNode pyLongCheckExactNode,
                         PyLongAsLongAndOverflowNode pyLongAsLongAndOverflowNode) {
-            if (pyLongCheckExactNode.execute(inliningTarget, p_i) & pyLongCheckExactNode.execute(inliningTarget, q_i)) {
+            if (pyLongCheckExactNode.execute(inliningTarget, p_i) && pyLongCheckExactNode.execute(inliningTarget, q_i)) {
                 try {
                     long int_p = pyLongAsLongAndOverflowNode.execute(frame, inliningTarget, p_i);
                     long int_q = pyLongAsLongAndOverflowNode.execute(frame, inliningTarget, q_i);

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/PosixSubprocessModuleBuiltins.java

@@ -330,16 +330,18 @@ private static boolean isBytecodeDSLJvmVenvLauncher(PythonContext context, byte[
             // best effort to find our if we are executing venv launcher
             Path executablePath = Path.of(context.getOption(PythonOptions.Executable).toJavaStringUncached()).toAbsolutePath();
             Path path = Path.of(new String(bytes));
-            while (Files.isSymbolicLink(path)) {
+            Path parent = path.getParent();
+            while (Files.isSymbolicLink(path) && parent != null) {
                 try {
                     Path symlink = Files.readSymbolicLink(path);
-                    path = path.getParent().resolve(symlink).toAbsolutePath();
+                    path = parent.resolve(symlink).toAbsolutePath();
                 } catch (IOException ignore) {
                     return false;
                 }
                 if (path.equals(executablePath)) {
                     return true;
                 }
+                parent = path.getParent();
             }
             return false;
         }