diff --git a/suite/regress/c-crashers/crash-14-invalid-accessor.c b/suite/regress/c-crashers/crash-14-invalid-accessor.c
new file mode 100644
index 0000000000000000000000000000000000000000..5de83a9c488ccde668ba4648a01f355faacc906e
--- /dev/null
+++ b/suite/regress/c-crashers/crash-14-invalid-accessor.c
@@ -0,0 +1,18 @@
+#include <keystone/keystone.h>
+int main(int argc, char **argv) {
+  int ks_arch = KS_ARCH_SYSTEMZ, ks_mode = KS_MODE_LITTLE_ENDIAN;
+  unsigned char assembly[] = {
+    'A', 'A', 'F', '=', 'A', 'A', '-', '-', 'A', 0x0a,
+    'F', '=', 'A', 'd', '-', '5', ';', '.', '=', 'A',
+    'A', 'F', '-', 'A', 'A', 'F', 0x00,
+  };
+  ks_engine *ks;
+  ks_err err = ks_open(ks_arch, ks_mode, &ks);
+  if (!err) {
+    size_t count, size;
+    unsigned char *insn;
+    ks_asm(ks, (char *)assembly, 0, &insn, &size, &count);
+    ks_free(insn);
+  }
+  ks_close(ks);
+}
diff --git a/suite/regress/c-crashers/crash-15-expected-macro-to-be-defined.c b/suite/regress/c-crashers/crash-15-expected-macro-to-be-defined.c
new file mode 100644
index 0000000000000000000000000000000000000000..3e70e3fd38825dcf55735e9a4fcb7f5005012d30
--- /dev/null
+++ b/suite/regress/c-crashers/crash-15-expected-macro-to-be-defined.c
@@ -0,0 +1,18 @@
+#include <keystone/keystone.h>
+int main(int argc, char **argv) {
+  int ks_arch = KS_ARCH_SYSTEMZ, ks_mode = KS_MODE_LITTLE_ENDIAN;
+  unsigned char assembly[] = {
+    0x12, ';', 0x12, 'i', ';', '.', 'i', 'R', 'p', ' ',
+    'e', 'm', 'i', 'R', 'p', ',', 0xca, 0xe9, ',', 'I',
+    '=', 0x00,
+  };
+  ks_engine *ks;
+  ks_err err = ks_open(ks_arch, ks_mode, &ks);
+  if (!err) {
+    size_t count, size;
+    unsigned char *insn;
+    ks_asm(ks, (char *)assembly, 0, &insn, &size, &count);
+    ks_free(insn);
+  }
+  ks_close(ks);
+}
diff --git a/suite/regress/c-crashers/crash-16-expression-value-must-be-representable-in-32-bits.c b/suite/regress/c-crashers/crash-16-expression-value-must-be-representable-in-32-bits.c
new file mode 100644
index 0000000000000000000000000000000000000000..06df7659ff2ff58bca5afd54f13928fc1d019db5
--- /dev/null
+++ b/suite/regress/c-crashers/crash-16-expression-value-must-be-representable-in-32-bits.c
@@ -0,0 +1,16 @@
+#include <keystone/keystone.h>
+int main(int argc, char **argv) {
+  int ks_arch = KS_ARCH_ARM, ks_mode = KS_MODE_LITTLE_ENDIAN;
+  unsigned char assembly[] = {
+    ' ', 'e', 'o', 'r', ' ', 'A', '1', ',', '.', '2', 0x00,
+  };
+  ks_engine *ks;
+  ks_err err = ks_open(ks_arch, ks_mode, &ks);
+  if (!err) {
+    size_t count, size;
+    unsigned char *insn;
+    ks_asm(ks, (char *)assembly, 0, &insn, &size, &count);
+    ks_free(insn);
+  }
+  ks_close(ks);
+}