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Testcase for invalid pointer/float conversions

Message ID Pine.LNX.4.64.1108182159560.20343@digraph.polyomino.org.uk
State New
Headers show

Commit Message

Joseph Myers Aug. 18, 2011, 10:01 p.m. UTC 
C1X adds a constraint forbidding casts between pointers and floating-point 
types (previously compile-time undefined).  GCC already generates the 
required diagnostics; I've applied this patch to add a testcase for them.
diff mbox

Patch

Index: gcc.dg/c1x-pointer-float-1.c
===================================================================
--- gcc.dg/c1x-pointer-float-1.c	(revision 0)
+++ gcc.dg/c1x-pointer-float-1.c	(revision 0)
@@ -0,0 +1,28 @@ 
+/* Test C1X constraint against pointer / floating-point casts.  */
+/* { dg-do compile } */
+/* { dg-options "-std=c1x -pedantic-errors" } */
+
+void *p;
+float f;
+double d;
+long double ld;
+_Complex float cf;
+_Complex double cd;
+_Complex long double cld;
+
+void
+func (void)
+{
+  f = (float) p; /* { dg-error "pointer" } */
+  d = (double) p; /* { dg-error "pointer" } */
+  ld = (long double) p; /* { dg-error "pointer" } */
+  cf = (_Complex float) p; /* { dg-error "pointer" } */
+  cd = (_Complex double) p; /* { dg-error "pointer" } */
+  cld = (_Complex long double) p; /* { dg-error "pointer" } */
+  p = (void *) f; /* { dg-error "pointer" } */
+  p = (void *) d; /* { dg-error "pointer" } */
+  p = (void *) ld; /* { dg-error "pointer" } */
+  p = (void *) cf; /* { dg-error "pointer" } */
+  p = (void *) cd; /* { dg-error "pointer" } */
+  p = (void *) cld; /* { dg-error "pointer" } */
+}
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 177883)
+++ ChangeLog	(working copy)
@@ -1,3 +1,7 @@ 
+2011-08-18  Joseph Myers  <joseph@codesourcery.com>
+
+	* gcc.dg/c1x-pointer-float-1.c: New test.
+
 2011-08-18  Mikael Morin  <mikael.morin@sfr.fr>
 
 	PR fortran/50071