From 571b3174b2c68c6d91f74e528d8ab145cc14b838 Mon Sep 17 00:00:00 2001
From: Florian Pfaff <6773539+FlorianPfaff@users.noreply.github.com>
Date: Sat, 27 Jun 2026 22:57:39 +0200
Subject: [PATCH 1/2] Reject boolean PyTorch normal parameters

---
 src/pyrecest/_backend/pytorch/random.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/pyrecest/_backend/pytorch/random.py b/src/pyrecest/_backend/pytorch/random.py
index ca7d1c4cf..a263fb9d3 100644
--- a/src/pyrecest/_backend/pytorch/random.py
+++ b/src/pyrecest/_backend/pytorch/random.py
@@ -244,6 +244,11 @@ def _normal_device(*values):
     return None
 
 
+def _validate_normal_parameter(value, name):
+    if _contains_boolean_value(value):
+        raise TypeError(f"{name} must be real numeric, not boolean")
+
+
 def _normal_array_parameters(loc, scale):
     device = _normal_device(loc, scale)
     loc = _torch.as_tensor(loc, device=device)
@@ -413,6 +418,8 @@ def multinomial(n, pvals, size=None):
 
 @_allow_complex_dtype
 def normal(loc=0.0, scale=1.0, size=None):
+    _validate_normal_parameter(loc, "loc")
+    _validate_normal_parameter(scale, "scale")
     size = _normal_size(size)
     if not (_is_array_parameter(loc) or _is_array_parameter(scale)):
         return _torch.normal(mean=loc, std=scale, size=size or ())

From 0da82fffcf86e75444ec82edd6573b2d12b5d2fc Mon Sep 17 00:00:00 2001
From: Florian Pfaff <6773539+FlorianPfaff@users.noreply.github.com>
Date: Sat, 27 Jun 2026 22:58:53 +0200
Subject: [PATCH 2/2] Cover PyTorch normal boolean parameter validation

---
 tests/backend/test_pytorch_random_backend.py | 23 ++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/tests/backend/test_pytorch_random_backend.py b/tests/backend/test_pytorch_random_backend.py
index 706291048..7f75638d5 100644
--- a/tests/backend/test_pytorch_random_backend.py
+++ b/tests/backend/test_pytorch_random_backend.py
@@ -163,6 +163,29 @@ def test_uniform_rejects_boolean_bounds(low, high):
         random.uniform(low, high)
 
 
+@pytest.mark.parametrize(
+    ("loc", "scale"),
+    [
+        (False, 1.0),
+        (0.0, True),
+        (np.bool_(True), 1.0),
+        (0.0, np.bool_(True)),
+        (torch.tensor(True), 1.0),
+        (0.0, torch.tensor(True)),
+        (torch.tensor([False, False]), torch.tensor([1.0, 2.0])),
+        ([False, 0.0], [1.0, 2.0]),
+        ([0.0, 0.5], [1.0, np.bool_(True)]),
+        (
+            np.array([0.0, np.bool_(False)], dtype=object),
+            np.array([1.0, 2.0], dtype=object),
+        ),
+    ],
+)
+def test_normal_rejects_boolean_parameters(loc, scale):
+    with pytest.raises(TypeError, match="real numeric"):
+        random.normal(loc, scale)
+
+
 @pytest.mark.parametrize(
     ("low", "high"),
     [