1 files changed, 76 insertions, 0 deletions
diff --git a/REORG.TODO/stdlib/bug-getcontext.c b/REORG.TODO/stdlib/bug-getcontext.c
new file mode 100644
index 0000000000..163400acba
--- /dev/null
+++ b/REORG.TODO/stdlib/bug-getcontext.c
@@ -0,0 +1,76 @@
+/* BZ 12420 */
+
+#include <errno.h>
+#include <fenv.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ucontext.h>
+#include <libc-diag.h>
+
+static int
+do_test (void)
+{
+  if (FE_ALL_EXCEPT == 0)
+    {
+      printf("Skipping test; no support for FP exceptions.\n");
+      return 0;
+    }
+
+  int except_mask = 0;
+#ifdef FE_DIVBYZERO
+  except_mask |= FE_DIVBYZERO;
+#endif
+#ifdef FE_INVALID
+  except_mask |= FE_INVALID;
+#endif
+#ifdef FE_OVERFLOW
+  except_mask |= FE_OVERFLOW;
+#endif
+#ifdef FE_UNDERFLOW
+  except_mask |= FE_UNDERFLOW;
+#endif
+  int status = feenableexcept (except_mask);
+
+  except_mask = fegetexcept ();
+  if (except_mask == -1)
+    {
+      printf("\nBefore getcontext(): fegetexcept returned: %d\n",
+	     except_mask);
+      return 1;
+    }
+
+  ucontext_t ctx;
+  status = getcontext(&ctx);
+  if (status)
+    {
+      printf("\ngetcontext failed, errno: %d.\n", errno);
+      return 1;
+    }
+
+  printf ("\nDone with getcontext()!\n");
+  fflush (NULL);
+
+  /* On nios2 and tilepro, GCC 5 warns that except_mask may be used
+     uninitialized.  Because it is always initialized and nothing in
+     this test ever calls setcontext (a setcontext call could result
+     in local variables being clobbered on the second return from
+     getcontext), in fact an uninitialized use is not possible.  */
+  DIAG_PUSH_NEEDS_COMMENT;
+  DIAG_IGNORE_NEEDS_COMMENT (5, "-Wmaybe-uninitialized");
+  int mask = fegetexcept ();
+  if (mask != except_mask)
+    {
+      printf("\nAfter getcontext(): fegetexcept returned: %d, expected: %d.\n",
+	     mask, except_mask);
+      return 1;
+    }
+
+  printf("\nAt end fegetexcept() returned %d, expected: %d.\n",
+	 mask, except_mask);
+  DIAG_POP_NEEDS_COMMENT;
+
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"