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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/gcc.dg/bitfld-2.c
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Diffstat (limited to 'gcc/testsuite/gcc.dg/bitfld-2.c')
-rw-r--r--gcc/testsuite/gcc.dg/bitfld-2.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/bitfld-2.c b/gcc/testsuite/gcc.dg/bitfld-2.c
new file mode 100644
index 000000000..b61fec608
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/bitfld-2.c
@@ -0,0 +1,23 @@
+/* Copyright (C) 2002 Free Software Foundation, Inc.
+
+ Tests we warn about overly-large assignments to bitfields.
+
+ Source: Neil Booth, 28 Jan 2002.
+*/
+
+struct bf
+{
+ unsigned int a: 2;
+ int b: 2;
+};
+
+struct bf p = {4, 0}; /* { dg-warning "truncated" "" } */
+struct bf q = {0, 2}; /* { dg-warning "overflow" "" } */
+struct bf r = {3, -2}; /* { dg-bogus "(truncated|overflow)" } */
+
+void foo ()
+{
+ p.a = 4, p.b = 0; /* { dg-warning "truncated" "" } */
+ q.a = 0, q.b = 2; /* { dg-warning "overflow" "" } */
+ r.a = 3, r.b = -2; /* { dg-bogus "(truncated|overflow)" } */
+}