builtin-pow-mpfr-1.c: New test.

	* gcc.dg/torture/builtin-pow-mpfr-1.c: New test.

From-SVN: r120018

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 5819595d2dff4e9908893d6fdda58fb1de61c559..8a591530f5dce2ded65d2cd74041db985ce0eab0 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2006-12-18  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+       * gcc.dg/torture/builtin-pow-mpfr-1.c: New test.
+
 2006-12-18  Brooks Moses  <brooks.moses@codesourcery.com>
 
        * gfortran.dg/advance_3.f90: Add dg-do compile directive.

diff --git a/gcc/testsuite/gcc.dg/torture/builtin-pow-mpfr-1.c b/gcc/testsuite/gcc.dg/torture/builtin-pow-mpfr-1.c
new file mode 100644 (file)
index 0000000..6206b9e
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/builtin-pow-mpfr-1.c
@@ -0,0 +1,19 @@
+/* Version 2.2.0 of MPFR had bugs in pow underflow/overflow.  This
+   test checks to see if that buggy version was installed.  The
+   problem is NOT fixed with the version 2.2.0 "cumulative patch".
+   However it is fixed in version 2.2.1 and presumably later MPFR
+   versions.
+
+   Origin: Kaveh R. Ghazi 12/17/2006.  */
+
+/* { dg-do compile } */
+/* { dg-options "-fdump-tree-original" } */
+
+extern double testit()
+{
+  /* This underflows and therefore gcc should not fold it.  */
+  return __builtin_pow (0.11, 1.0e38);
+}
+
+/* { dg-final { scan-tree-dump "pow" "original" } } */
+/* { dg-final { cleanup-tree-dump "original" } } */