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diff gcc/testsuite/gcc.dg/Wstrict-overflow-3.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/gcc.dg/Wstrict-overflow-3.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,13 @@
+/* { dg-do compile } */
+/* { dg-options "-fstrict-overflow -O2 -Wstrict-overflow=4" } */
+
+/* Source: Ian Lance Taylor.  Based on strict-overflow-2.c.  */
+
+/* We can only simplify the division when using strict overflow
+   semantics.  */
+
+int
+foo (int i)
+{
+  return (i * 100) / 10; /* { dg-warning "assuming signed overflow does not occur" "correct warning" } */
+}