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diff gcc/testsuite/c-c++-common/Wshift-overflow-5.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/c-c++-common/Wshift-overflow-5.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,11 @@
+/* PR c++/55095 */
+/* { dg-do compile { target int32 } } */
+/* { dg-options "-O -Wshift-overflow=2" } */
+/* { dg-additional-options "-std=c++11" { target c++ } } */
+
+#define INTM1 (sizeof (int) * __CHAR_BIT__ - 1)
+#define LLONGM1 (sizeof (long long) * __CHAR_BIT__ - 1)
+
+int i1 = 1 << INTM1; /* { dg-warning "requires 33 bits to represent" } */
+unsigned u1 = 1 << INTM1; /* { dg-warning "requires 33 bits to represent" } */
+long long int l1 = 1LL << LLONGM1; /* { dg-warning "requires 65 bits to represent" } */