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-rw-r--r--gcc-4.9/gcc/testsuite/gcc.dg/compare1.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/compare1.c b/gcc-4.9/gcc/testsuite/gcc.dg/compare1.c
new file mode 100644
index 000000000..17ba3ee20
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/compare1.c
@@ -0,0 +1,41 @@
+/* Test for a bogus warning on comparison between signed and unsigned.
+ This was inspired by code in gcc. This testcase is identical to
+ compare9.c except that we use -fno-short-enums here and expect a
+ warning from case 4. */
+
+/* { dg-do compile } */
+/* { dg-options "-fno-short-enums -Wsign-compare" } */
+
+int tf = 1;
+
+/* This enumeration has an explicit negative value and is therefore signed. */
+enum mm1
+{
+ VOID, SI, DI, MAX = -1
+};
+
+/* This enumeration fits entirely in a signed int, but is unsigned anyway. */
+enum mm2
+{
+ VOID2, SI2, DI2, MAX2
+};
+
+int f(enum mm1 x)
+{
+ return x == (tf?DI:SI); /* { dg-bogus "signed and unsigned" "case 1" } */
+}
+
+int g(enum mm1 x)
+{
+ return x == (tf?DI:-1); /* { dg-bogus "signed and unsigned" "case 2" } */
+}
+
+int h(enum mm2 x)
+{
+ return x == (tf?DI2:SI2); /* { dg-bogus "signed and unsigned" "case 3" } */
+}
+
+int i(enum mm2 x)
+{
+ return x == (tf?DI2:-1); /* { dg-warning "signed and unsigned" "case 4" } */
+}