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-rw-r--r--clang/test/Sema/tautological-unsigned-enum-zero-compare.cpp269
1 files changed, 32 insertions, 237 deletions
diff --git a/clang/test/Sema/tautological-unsigned-enum-zero-compare.cpp b/clang/test/Sema/tautological-unsigned-enum-zero-compare.cpp
index 5577b68b5eb..a733b6edfc0 100644
--- a/clang/test/Sema/tautological-unsigned-enum-zero-compare.cpp
+++ b/clang/test/Sema/tautological-unsigned-enum-zero-compare.cpp
@@ -1,6 +1,12 @@
-// RUN: %clang_cc1 -std=c++11 -triple=x86_64-pc-linux-gnu -fsyntax-only -DUNSIGNED -verify %s
-// RUN: %clang_cc1 -std=c++11 -triple=x86_64-pc-win32 -fsyntax-only -DSIGNED -verify %s
-// RUN: %clang_cc1 -std=c++11 -triple=x86_64-pc-win32 -fsyntax-only -DSILENCE -Wno-tautological-unsigned-enum-zero-compare -verify %s
+// RUN: %clang_cc1 -std=c++11 -triple=x86_64-pc-linux-gnu -fsyntax-only \
+// RUN: -verify=unsigned,unsigned-signed %s
+// RUN: %clang_cc1 -std=c++11 -triple=x86_64-pc-win32 -fsyntax-only \
+// RUN: -verify=unsigned-signed %s
+// RUN: %clang_cc1 -std=c++11 -triple=x86_64-pc-win32 -fsyntax-only \
+// RUN: -Wno-tautological-unsigned-enum-zero-compare \
+// RUN: -verify=silence %s
+
+// silence-no-diagnostics
int main() {
// On Windows, all enumerations have a fixed underlying type, which is 'int'
@@ -16,71 +22,72 @@ int main() {
enum C : signed { C_foo = 0, C_bar, };
enum C c;
-#ifdef UNSIGNED
- if (a < 0) // expected-warning {{comparison of unsigned enum expression < 0 is always false}}
+ if (a < 0) // unsigned-warning {{comparison of unsigned enum expression < 0 is always false}}
return 0;
if (0 >= a)
return 0;
if (a > 0)
return 0;
- if (0 <= a) // expected-warning {{comparison of 0 <= unsigned enum expression is always true}}
+ if (0 <= a) // unsigned-warning {{comparison of 0 <= unsigned enum expression is always true}}
return 0;
if (a <= 0)
return 0;
- if (0 > a) // expected-warning {{comparison of 0 > unsigned enum expression is always false}}
+ if (0 > a) // unsigned-warning {{comparison of 0 > unsigned enum expression is always false}}
return 0;
- if (a >= 0) // expected-warning {{comparison of unsigned enum expression >= 0 is always true}}
+ if (a >= 0) // unsigned-warning {{comparison of unsigned enum expression >= 0 is always true}}
return 0;
if (0 < a)
return 0;
- if (a < 0U) // expected-warning {{comparison of unsigned enum expression < 0 is always false}}
+ // FIXME: As below, the issue here is that the enumeration is promoted to
+ // unsigned.
+ if (a < 0U) // unsigned-signed-warning {{comparison of unsigned enum expression < 0 is always false}}
return 0;
if (0U >= a)
return 0;
if (a > 0U)
return 0;
- if (0U <= a) // expected-warning {{comparison of 0 <= unsigned enum expression is always true}}
+ if (0U <= a) // unsigned-signed-warning {{comparison of 0 <= unsigned enum expression is always true}}
return 0;
if (a <= 0U)
return 0;
- if (0U > a) // expected-warning {{comparison of 0 > unsigned enum expression is always false}}
+ if (0U > a) // unsigned-signed-warning {{comparison of 0 > unsigned enum expression is always false}}
return 0;
- if (a >= 0U) // expected-warning {{comparison of unsigned enum expression >= 0 is always true}}
+ if (a >= 0U) // unsigned-signed-warning {{comparison of unsigned enum expression >= 0 is always true}}
return 0;
if (0U < a)
return 0;
- if (b < 0) // expected-warning {{comparison of unsigned enum expression < 0 is always false}}
+ if (b < 0) // unsigned-signed-warning {{comparison of unsigned enum expression < 0 is always false}}
return 0;
if (0 >= b)
return 0;
if (b > 0)
return 0;
- if (0 <= b) // expected-warning {{comparison of 0 <= unsigned enum expression is always true}}
+ if (0 <= b) // unsigned-signed-warning {{comparison of 0 <= unsigned enum expression is always true}}
return 0;
if (b <= 0)
return 0;
- if (0 > b) // expected-warning {{comparison of 0 > unsigned enum expression is always false}}
+ if (0 > b) // unsigned-signed-warning {{comparison of 0 > unsigned enum expression is always false}}
return 0;
- if (b >= 0) // expected-warning {{comparison of unsigned enum expression >= 0 is always true}}
+ if (b >= 0) // unsigned-signed-warning {{comparison of unsigned enum expression >= 0 is always true}}
return 0;
if (0 < b)
return 0;
- if (b < 0U) // expected-warning {{comparison of unsigned enum expression < 0 is always false}}
+ if (b < 0U) // unsigned-signed-warning {{comparison of unsigned enum expression < 0 is always false}}
return 0;
if (0U >= b)
return 0;
if (b > 0U)
return 0;
- if (0U <= b) // expected-warning {{comparison of 0 <= unsigned enum expression is always true}}
+ if (0U <= b) // unsigned-signed-warning {{comparison of 0 <= unsigned enum expression is always true}}
return 0;
if (b <= 0U)
return 0;
- if (0U > b) // expected-warning {{comparison of 0 > unsigned enum expression is always false}}
+ if (0U > b) // unsigned-signed-warning {{comparison of 0 > unsigned enum expression is always false}}
return 0;
- if (b >= 0U) // expected-warning {{comparison of unsigned enum expression >= 0 is always true}}
+ if (b >= 0U) // unsigned-signed-warning {{comparison of unsigned enum expression >= 0 is always true}}
return 0;
if (0U < b)
return 0;
@@ -104,230 +111,22 @@ int main() {
// FIXME: These diagnostics are terrible. The issue here is that the signed
// enumeration value was promoted to an unsigned type.
- if (c < 0U) // expected-warning {{comparison of unsigned enum expression < 0 is always false}}
- return 0;
- if (0U >= c)
- return 0;
- if (c > 0U)
- return 0;
- if (0U <= c) // expected-warning {{comparison of 0 <= unsigned enum expression is always true}}
- return 0;
- if (c <= 0U)
- return 0;
- if (0U > c) // expected-warning {{comparison of 0 > unsigned enum expression is always false}}
- return 0;
- if (c >= 0U) // expected-warning {{comparison of unsigned enum expression >= 0 is always true}}
- return 0;
- if (0U < c)
- return 0;
-#elif defined(SIGNED)
- if (a < 0)
- return 0;
- if (0 >= a)
- return 0;
- if (a > 0)
- return 0;
- if (0 <= a)
- return 0;
- if (a <= 0)
- return 0;
- if (0 > a)
- return 0;
- if (a >= 0)
- return 0;
- if (0 < a)
- return 0;
-
- // FIXME: As above, the issue here is that the enumeration is promoted to
- // unsigned.
- if (a < 0U) // expected-warning {{comparison of unsigned enum expression < 0 is always false}}
- return 0;
- if (0U >= a)
- return 0;
- if (a > 0U)
- return 0;
- if (0U <= a) // expected-warning {{comparison of 0 <= unsigned enum expression is always true}}
- return 0;
- if (a <= 0U)
- return 0;
- if (0U > a) // expected-warning {{comparison of 0 > unsigned enum expression is always false}}
- return 0;
- if (a >= 0U) // expected-warning {{comparison of unsigned enum expression >= 0 is always true}}
- return 0;
- if (0U < a)
- return 0;
-
- if (b < 0) // expected-warning {{comparison of unsigned enum expression < 0 is always false}}
- return 0;
- if (0 >= b)
- return 0;
- if (b > 0)
- return 0;
- if (0 <= b) // expected-warning {{comparison of 0 <= unsigned enum expression is always true}}
- return 0;
- if (b <= 0)
- return 0;
- if (0 > b) // expected-warning {{comparison of 0 > unsigned enum expression is always false}}
- return 0;
- if (b >= 0) // expected-warning {{comparison of unsigned enum expression >= 0 is always true}}
- return 0;
- if (0 < b)
- return 0;
-
- if (b < 0U) // expected-warning {{comparison of unsigned enum expression < 0 is always false}}
- return 0;
- if (0U >= b)
- return 0;
- if (b > 0U)
- return 0;
- if (0U <= b) // expected-warning {{comparison of 0 <= unsigned enum expression is always true}}
- return 0;
- if (b <= 0U)
- return 0;
- if (0U > b) // expected-warning {{comparison of 0 > unsigned enum expression is always false}}
- return 0;
- if (b >= 0U) // expected-warning {{comparison of unsigned enum expression >= 0 is always true}}
- return 0;
- if (0U < b)
- return 0;
-
- if (c < 0)
- return 0;
- if (0 >= c)
- return 0;
- if (c > 0)
- return 0;
- if (0 <= c)
- return 0;
- if (c <= 0)
- return 0;
- if (0 > c)
- return 0;
- if (c >= 0)
- return 0;
- if (0 < c)
- return 0;
-
- if (c < 0U) // expected-warning {{comparison of unsigned enum expression < 0 is always false}}
+ if (c < 0U) // unsigned-signed-warning {{comparison of unsigned enum expression < 0 is always false}}
return 0;
if (0U >= c)
return 0;
if (c > 0U)
return 0;
- if (0U <= c) // expected-warning {{comparison of 0 <= unsigned enum expression is always true}}
+ if (0U <= c) // unsigned-signed-warning {{comparison of 0 <= unsigned enum expression is always true}}
return 0;
if (c <= 0U)
return 0;
- if (0U > c) // expected-warning {{comparison of 0 > unsigned enum expression is always false}}
+ if (0U > c) // unsigned-signed-warning {{comparison of 0 > unsigned enum expression is always false}}
return 0;
- if (c >= 0U) // expected-warning {{comparison of unsigned enum expression >= 0 is always true}}
+ if (c >= 0U) // unsigned-signed-warning {{comparison of unsigned enum expression >= 0 is always true}}
return 0;
if (0U < c)
return 0;
-#else
- // expected-no-diagnostics
- if (a < 0)
- return 0;
- if (0 >= a)
- return 0;
- if (a > 0)
- return 0;
- if (0 <= a)
- return 0;
- if (a <= 0)
- return 0;
- if (0 > a)
- return 0;
- if (a >= 0)
- return 0;
- if (0 < a)
- return 0;
-
- if (a < 0U)
- return 0;
- if (0U >= a)
- return 0;
- if (a > 0U)
- return 0;
- if (0U <= a)
- return 0;
- if (a <= 0U)
- return 0;
- if (0U > a)
- return 0;
- if (a >= 0U)
- return 0;
- if (0U < a)
- return 0;
-
- if (b < 0)
- return 0;
- if (0 >= b)
- return 0;
- if (b > 0)
- return 0;
- if (0 <= b)
- return 0;
- if (b <= 0)
- return 0;
- if (0 > b)
- return 0;
- if (b >= 0)
- return 0;
- if (0 < b)
- return 0;
-
- if (b < 0U)
- return 0;
- if (0U >= b)
- return 0;
- if (b > 0U)
- return 0;
- if (0U <= b)
- return 0;
- if (b <= 0U)
- return 0;
- if (0U > b)
- return 0;
- if (b >= 0U)
- return 0;
- if (0U < b)
- return 0;
-
- if (c < 0)
- return 0;
- if (0 >= c)
- return 0;
- if (c > 0)
- return 0;
- if (0 <= c)
- return 0;
- if (c <= 0)
- return 0;
- if (0 > c)
- return 0;
- if (c >= 0)
- return 0;
- if (0 < c)
- return 0;
-
- if (c < 0U)
- return 0;
- if (0U >= c)
- return 0;
- if (c > 0U)
- return 0;
- if (0U <= c)
- return 0;
- if (c <= 0U)
- return 0;
- if (0U > c)
- return 0;
- if (c >= 0U)
- return 0;
- if (0U < c)
- return 0;
-#endif
return 1;
}
@@ -340,11 +139,7 @@ int test() {
enum A a;
// used to crash in llvm::APSInt::getMaxValue()
-#ifndef SILENCE
- if (a < 0) // expected-warning {{comparison of unsigned enum expression < 0 is always false}}
-#else
- if (a > 0)
-#endif
+ if (a < 0) // unsigned-signed-warning {{comparison of unsigned enum expression < 0 is always false}}
return 0;
return 1;
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