re PR c/52862 (ICE convert_to_pointer, at convert.c:50)

2012-04-13  Richard Guenther  <rguenther@suse.de>

	PR c/52862
	* convert.c (convert_to_pointer): Remove special-casing of
	zero.

	* gcc.dg/pr52862.c: New testcase.

From-SVN: r186407

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4b688ea43aebdee85fa5d53f387dc540737dfd71..d161985b518b6a5a9d3c0eb683dc666b17e7e449 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2012-04-13  Richard Guenther  <rguenther@suse.de>
+
+       PR c/52862
+       * convert.c (convert_to_pointer): Remove special-casing of
+       zero.
+
 2012-04-13  Joey Ye  <joey.ye@arm.com>
 
        * config/arm/constraints.md (Pe): New constraint.

diff --git a/gcc/convert.c b/gcc/convert.c
index dc9b7f29ea409a5b6bb096ab78ce8346bebfc5a1..8ff2e9a825af8e144f1867ac8c2e343ece19681b 100644 (file)
--- a/gcc/convert.c
+++ b/gcc/convert.c
@@ -44,11 +44,6 @@ convert_to_pointer (tree type, tree expr)
   if (TREE_TYPE (expr) == type)
     return expr;
 
-  /* Propagate overflow to the NULL pointer.  */
-  if (integer_zerop (expr))
-    return force_fit_type_double (type, double_int_zero, 0,
-                                 TREE_OVERFLOW (expr));
-
   switch (TREE_CODE (TREE_TYPE (expr)))
     {
     case POINTER_TYPE:

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 2884b93955563850a9ae376b0e530d69ada2ff8f..23608c58065bafe606a8e70529a31fc226f0ea89 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2012-04-13  Richard Guenther  <rguenther@suse.de>
+
+       PR c/52862
+       * gcc.dg/pr52862.c: New testcase.
+
 2012-04-13  Joey Ye  <joey.ye@arm.com>
 
        * gcc.target/arm/thumb1-imm.c: New testcase.

diff --git a/gcc/testsuite/gcc.dg/pr52862.c b/gcc/testsuite/gcc.dg/pr52862.c
new file mode 100644 (file)
index 0000000..febe7a8
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr52862.c
@@ -0,0 +1,9 @@
+/* { dg-do compile } */
+/* { dg-options "-O" } */
+
+void ASMAtomicWritePtrVoid(const void *pv);
+void rtThreadDestroy(void)
+{
+  void * const pvTypeChecked = ((void *)0);
+  ASMAtomicWritePtrVoid((void *)(pvTypeChecked));
+}