2008-01-22 Manuel Lopez-Ibanez <manu@gcc.gnu.org>
PR 32102
testsuite/
* gcc.dg/Wstrict-overflow-21.c: New.
* g++.dg/warn/Wstrict-aliasing-8.C: New.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@131722
138bc75d-0d04-0410-961f-
82ee72b054a4
--- /dev/null
+/* { dg-do compile } */
+/* { dg-options "-Wstrict-aliasing=2 -O2 -Wall" } */
+
+int a[2];
+
+double *foo1(void)
+{
+ return (double *)a; /* { dg-warning "strict-aliasing" } */
+}
+
+double *foo2(void)
+{
+ return (double *)&a[0]; /* { dg-warning "strict-aliasing" } */
+}
+
+__complex__ double x;
+int *bar(void)
+{
+ return (int *)&__imag__ x; /* { dg-warning "strict-aliasing" } */
+}
--- /dev/null
+/* PR 32102: -Wall stomps on -Wstrict-overflow */
+/* { dg-do compile } */
+/* { dg-options "-fstrict-overflow -O2 -Wstrict-overflow=2 -Wall" } */
+int
+foo ()
+{
+ int i, bits;
+ for (i = 1, bits = 1; i > 0; i += i) /* { dg-warning "assuming signed overflow does not occur" "correct warning" } */
+ ++bits;
+ return bits;
+}
+