diff --git a/samples/tests/CMakeLists.txt b/samples/tests/CMakeLists.txt
index 463d4da..388c5ae 100644
--- a/samples/tests/CMakeLists.txt
+++ b/samples/tests/CMakeLists.txt
@@ -3,11 +3,13 @@ set(SAMPLES
   exit.c
   long-messages.c
   other-crashes.c
+  theories_regression.c
 
   failmessages.cc
   exit.cc
   long-messages.cc
   other-crashes.cc
+  theories_regression.cc
 )
 
 add_samples("${CMAKE_CURRENT_LIST_DIR}" "${SAMPLES}")
diff --git a/samples/tests/outputs/theories_regression.c.bin.err.expected b/samples/tests/outputs/theories_regression.c.bin.err.expected
new file mode 100644
index 0000000..c09ce14
--- /dev/null
+++ b/samples/tests/outputs/theories_regression.c.bin.err.expected
@@ -0,0 +1,15 @@
+[----] theories_regression.c:52: Assertion failed: The conditions for this assertion were not met.
+[----]   Theory theory::gen failed with the following parameters: (1)
+[----] theories_regression.c:52: Assertion failed: The conditions for this assertion were not met.
+[----]   Theory theory::gen failed with the following parameters: (2)
+[----] theories_regression.c:52: Assertion failed: The conditions for this assertion were not met.
+[----]   Theory theory::gen failed with the following parameters: (3)
+[----] theories_regression.c:52: Assertion failed: The conditions for this assertion were not met.
+[----]   Theory theory::gen failed with the following parameters: (4)
+[----] theories_regression.c:52: Assertion failed: The conditions for this assertion were not met.
+[----]   Theory theory::gen failed with the following parameters: (5)
+[FAIL] theory::gen: (0.00s)
+[----] theories_regression.c:35: Assertion failed: The conditions for this assertion were not met.
+[----]   Theory theory::misc failed with the following parameters: ('a', true, 1, 1, 1l, 1l, 3.14f, 3.14, "test", "other test")
+[FAIL] theory::misc: (0.00s)
+[====] Synthesis: Tested: 2 | Passing: 0 | Failing: 2 | Crashing: 0 
diff --git a/samples/tests/outputs/theories_regression.c.bin.out.expected b/samples/tests/outputs/theories_regression.c.bin.out.expected
new file mode 100644
index 0000000..e69de29
diff --git a/samples/tests/outputs/theories_regression.cc.bin.err.expected b/samples/tests/outputs/theories_regression.cc.bin.err.expected
new file mode 100644
index 0000000..4c10ddd
--- /dev/null
+++ b/samples/tests/outputs/theories_regression.cc.bin.err.expected
@@ -0,0 +1,15 @@
+[----] theories_regression.cc:54: Assertion failed: The conditions for this assertion were not met.
+[----]   Theory theory::gen failed with the following parameters: (1)
+[----] theories_regression.cc:54: Assertion failed: The conditions for this assertion were not met.
+[----]   Theory theory::gen failed with the following parameters: (2)
+[----] theories_regression.cc:54: Assertion failed: The conditions for this assertion were not met.
+[----]   Theory theory::gen failed with the following parameters: (3)
+[----] theories_regression.cc:54: Assertion failed: The conditions for this assertion were not met.
+[----]   Theory theory::gen failed with the following parameters: (4)
+[----] theories_regression.cc:54: Assertion failed: The conditions for this assertion were not met.
+[----]   Theory theory::gen failed with the following parameters: (5)
+[FAIL] theory::gen: (0.00s)
+[----] theories_regression.cc:37: Assertion failed: The conditions for this assertion were not met.
+[----]   Theory theory::misc failed with the following parameters: ('a', true, 1, 1, 1l, 1l, 3.14f, 3.14, "test", "other test")
+[FAIL] theory::misc: (0.00s)
+[====] Synthesis: Tested: 2 | Passing: 0 | Failing: 2 | Crashing: 0 
diff --git a/samples/tests/outputs/theories_regression.cc.bin.out.expected b/samples/tests/outputs/theories_regression.cc.bin.out.expected
new file mode 100644
index 0000000..e69de29
diff --git a/samples/tests/theories_regression.c b/samples/tests/theories_regression.c
new file mode 100644
index 0000000..b8d4ca5
--- /dev/null
+++ b/samples/tests/theories_regression.c
@@ -0,0 +1,53 @@
+#ifdef _MSC_VER
+#pragma warning(disable : 4090)
+#endif
+
+#include <criterion/theories.h>
+
+// Testing for various parameters
+
+TheoryDataPoints(theory, misc) = {
+    DataPoints(char, 'a'),
+    DataPoints(bool, true),
+    DataPoints(short, 1),
+    DataPoints(int, 1),
+    DataPoints(long, 1),
+    DataPoints(long long, 1),
+    DataPoints(float, 3.14f),
+    DataPoints(double, 3.14),
+    DataPoints(char *, "test"),
+    DataPoints(const char *, "other test"),
+};
+
+Theory((char c, bool b, short s, int i, long l, long long ll, float f, double d, char *str, const char *cstr), theory, misc) {
+    cr_assert(b);
+    cr_assert_eq(c, 'a');
+    cr_assert_eq(s, 1);
+    cr_assert_eq(i, 1);
+    cr_assert_eq(l, 1);
+    cr_assert_eq(ll, 1);
+    cr_assert_eq(f, 3.14f);
+    cr_assert_eq(d, 3.14);
+    cr_assert_str_eq(str, "test");
+    cr_assert_str_eq(cstr, "other test");
+
+    // abort to see the formatted string of all parameters
+    cr_assert_fail();
+}
+
+// Manually generate datapoints
+
+TheoryDataPoints(theory, gen) = {
+    DataPoints(int, 0), // placeholder
+};
+
+static void generate_datapoints(void) {
+    static int arr[] = {1, 2, 3, 4, 5};
+    TheoryDataPoint(theory, gen)[0].len = 5;
+    TheoryDataPoint(theory, gen)[0].arr = &arr;
+}
+
+Theory((int i), theory, gen, .init = generate_datapoints) {
+    (void) i;
+    cr_assert_fail(); // we fail to display the parameter
+}
diff --git a/samples/tests/theories_regression.cc b/samples/tests/theories_regression.cc
new file mode 100644
index 0000000..5bebea1
--- /dev/null
+++ b/samples/tests/theories_regression.cc
@@ -0,0 +1,55 @@
+#ifdef _MSC_VER
+#pragma warning(disable : 4090)
+#endif
+
+#include <criterion/theories.h>
+
+// Testing for various parameters
+
+char test_str[] = {'t', 'e', 's', 't', '\0'};
+
+TheoryDataPoints(theory, misc) = {
+    DataPoints(char, 'a'),
+    DataPoints(bool, true),
+    DataPoints(short, 1),
+    DataPoints(int, 1),
+    DataPoints(long, 1),
+    DataPoints(long long, 1),
+    DataPoints(float, 3.14f),
+    DataPoints(double, 3.14),
+    DataPoints(char *, test_str),
+    DataPoints(const char *, "other test"),
+};
+
+Theory((char c, bool b, short s, int i, long l, long long ll, float f, double d, char *str, const char *cstr), theory, misc) {
+    cr_assert(b);
+    cr_assert_eq(c, 'a');
+    cr_assert_eq(s, 1);
+    cr_assert_eq(i, 1);
+    cr_assert_eq(l, 1);
+    cr_assert_eq(ll, 1);
+    cr_assert_eq(f, 3.14f);
+    cr_assert_eq(d, 3.14);
+    cr_assert_str_eq(str, "test");
+    cr_assert_str_eq(cstr, "other test");
+
+    // abort to see the formatted string of all parameters
+    cr_assert_fail();
+}
+
+// Manually generate datapoints
+
+TheoryDataPoints(theory, gen) = {
+    DataPoints(int, 0), // placeholder
+};
+
+static void generate_datapoints(void) {
+    static int arr[] = {1, 2, 3, 4, 5};
+    TheoryDataPoint(theory, gen)[0].len = 5;
+    TheoryDataPoint(theory, gen)[0].arr = &arr;
+}
+
+Theory((int i), theory, gen, .init = generate_datapoints) {
+    (void) i;
+    cr_assert_fail(); // we fail to display the parameter
+}