1 files changed, 45 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/pr45034.c b/gcc/testsuite/gcc.c-torture/execute/pr45034.c
new file mode 100644
index 000000000..2d86f309c
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/pr45034.c
@@ -0,0 +1,45 @@
+extern void abort (void);
+static void fixnum_neg(signed char x, signed char *py, int *pv)
+{
+  unsigned char ux, uy;
+
+  ux = (unsigned char)x;
+  uy = -ux;
+  *py = (uy <= 127) ? (signed char)uy : (-(signed char)(255 - uy) - 1);
+  *pv = (x == -128) ? 1 : 0;
+}
+
+void __attribute__((noinline)) foo(int x, int y, int v)
+{
+  if (y < -128 || y > 127)
+    abort();
+}
+
+int test_neg(void)
+{
+  signed char x, y;
+  int v, err;
+
+  err = 0;
+  x = -128;
+  for (;;) {
+      fixnum_neg(x, &y, &v);
+      foo((int)x, (int)y, v);
+      if ((v && x != -128) || (!v && x == -128))
+	++err;
+      if (x == 127)
+	break;
+      ++x;
+  }
+  return err;
+}
+
+int main(void)
+{
+  if (sizeof (char) != 1)
+    return 0;
+  if (test_neg() != 0)
+    abort();
+  return 0;
+}
+