vendor/clang/clang-trunk-r239412

1 files changed, 153 insertions, 0 deletions

diff --git a/test/Sema/PR16678.c b/test/Sema/PR16678.c
new file mode 100644
index 0000000000000..a06d0a98ba2d8
--- /dev/null
+++ b/test/Sema/PR16678.c
@@ -0,0 +1,153 @@
+// RUN: %clang_cc1 -DX32TYPE=ULONG -triple powerpc-unknown-linux-gnu -std=c89 -x c %s -verify
+// RUN: %clang_cc1 -DX32TYPE=ULONG -triple powerpc-unknown-linux-gnu -std=iso9899:199409 -x c %s -verify
+// RUN: %clang_cc1 -DX32TYPE=ULONG -triple powerpc-unknown-linux-gnu -std=c++98 -x c++ %s -verify
+// RUN: %clang_cc1 -DX32TYPE=LLONG -triple powerpc-unknown-linux-gnu -std=c99 -x c %s -verify
+// RUN: %clang_cc1 -DX32TYPE=LLONG -triple powerpc-unknown-linux-gnu -std=c11 -x c %s -verify
+// RUN: %clang_cc1 -DX32TYPE=LLONG -triple powerpc-unknown-linux-gnu -std=c++11 -x c++ %s -verify
+// RUN: %clang_cc1 -DX32TYPE=LLONG -triple powerpc-unknown-linux-gnu -std=c++1y -x c++ %s -verify
+// RUN: %clang_cc1 -DX32TYPE=LLONG -triple powerpc-unknown-linux-gnu -std=c++1z -x c++ %s -verify
+// RUN: %clang_cc1 -DX64TYPE=ULONG -triple powerpc64-unknown-linux-gnu -std=c89 -x c %s -verify
+// RUN: %clang_cc1 -DX64TYPE=ULONG -triple powerpc64-unknown-linux-gnu -std=iso9899:199409 -x c %s -verify
+// RUN: %clang_cc1 -DX64TYPE=ULONG -triple powerpc64-unknown-linux-gnu -std=c++98 -x c++ %s -verify
+// RUN: %clang_cc1 -DX64TYPE=ULLONG -triple powerpc64-unknown-linux-gnu -std=c99 -x c %s -verify
+// RUN: %clang_cc1 -DX64TYPE=ULLONG -triple powerpc64-unknown-linux-gnu -std=c11 -x c %s -verify
+// RUN: %clang_cc1 -DX64TYPE=ULLONG -triple powerpc64-unknown-linux-gnu -std=c++11 -x c++ %s -verify
+// RUN: %clang_cc1 -DX64TYPE=ULLONG -triple powerpc64-unknown-linux-gnu -std=c++1y -x c++ %s -verify
+// RUN: %clang_cc1 -DX64TYPE=ULLONG -triple powerpc64-unknown-linux-gnu -std=c++1z -x c++ %s -verify
+
+#ifdef X64TYPE
+#define X32TYPE long
+#endif
+
+#define IS_ULONG_ULONG 1
+#define IS_ULONG2(X) IS_ULONG_##X
+#define IS_ULONG(X) IS_ULONG2(X)
+
+#if !defined(X64TYPE) && !IS_ULONG(X32TYPE)
+// expected-no-diagnostics
+#endif
+
+typedef unsigned long ULONG;
+typedef long long LLONG;
+typedef unsigned long long ULLONG;
+
+
+/******************************************************************************
+ * Test 2^31 as a decimal literal with no suffix and with the "l" and "L" cases.
+ ******************************************************************************/
+extern X32TYPE x32;
+extern __typeof__(2147483648) x32;
+extern __typeof__(2147483648l) x32;
+extern __typeof__(2147483648L) x32;
+
+#if IS_ULONG(X32TYPE)
+#if !__cplusplus
+
+/******************************************************************************
+ * Under pre-C99 ISO C, unsigned long is attempted for decimal integer literals
+ * that do not have a suffix containing "u" or "U" if the literal does not fit
+ * within the range of int or long. See 6.1.3.2 paragraph 5.
+ ******************************************************************************/
+// expected-warning@39 {{integer literal is too large to be represented in type 'long', interpreting as 'unsigned long' per C89; this literal will have type 'long long' in C99 onwards}}
+// expected-warning@40 {{integer literal is too large to be represented in type 'long', interpreting as 'unsigned long' per C89; this literal will have type 'long long' in C99 onwards}}
+// expected-warning@41 {{integer literal is too large to be represented in type 'long', interpreting as 'unsigned long' per C89; this literal will have type 'long long' in C99 onwards}}
+#else
+
+/******************************************************************************
+ * Under pre-C++11 ISO C++, the same holds if the literal contains an "l" or "L"
+ * in its suffix; otherwise, the behavior is undefined. See 2.13.1 [lex.icon]
+ * paragraph 2.
+ ******************************************************************************/
+// expected-warning@39 {{integer literal is too large to be represented in type 'long' and is subject to undefined behavior under C++98, interpreting as 'unsigned long'; this literal will have type 'long long' in C++11 onwards}}
+// expected-warning@40 {{integer literal is too large to be represented in type 'long', interpreting as 'unsigned long' per C++98; this literal will have type 'long long' in C++11 onwards}}
+// expected-warning@41 {{integer literal is too large to be represented in type 'long', interpreting as 'unsigned long' per C++98; this literal will have type 'long long' in C++11 onwards}}
+#endif
+#endif
+
+
+#ifdef X64TYPE
+
+/******************************************************************************
+ * Test 2^63 as a decimal literal with no suffix and with the "l" and "L" cases.
+ ******************************************************************************/
+extern X64TYPE x64;
+extern __typeof__(9223372036854775808) x64;
+extern __typeof__(9223372036854775808l) x64;
+extern __typeof__(9223372036854775808L) x64;
+
+#if IS_ULONG(X64TYPE)
+
+#if !__cplusplus
+
+/******************************************************************************
+ * Under pre-C99 ISO C, unsigned long is attempted for decimal integer literals
+ * that do not have a suffix containing "u" or "U" if the literal does not fit
+ * within the range of int or long. See 6.1.3.2 paragraph 5.
+ ******************************************************************************/
+// expected-warning@74 {{integer literal is too large to be represented in type 'long', interpreting as 'unsigned long' per C89; this literal will be ill-formed in C99 onwards}}
+// expected-warning@75 {{integer literal is too large to be represented in type 'long', interpreting as 'unsigned long' per C89; this literal will be ill-formed in C99 onwards}}
+// expected-warning@76 {{integer literal is too large to be represented in type 'long', interpreting as 'unsigned long' per C89; this literal will be ill-formed in C99 onwards}}
+#else
+
+/******************************************************************************
+ * Under pre-C++11 ISO C++, the same holds if the literal contains an "l" or "L"
+ * in its suffix; otherwise, the behavior is undefined. See 2.13.1 [lex.icon]
+ * paragraph 2.
+ ******************************************************************************/
+// expected-warning@74 {{integer literal is too large to be represented in type 'long' and is subject to undefined behavior under C++98, interpreting as 'unsigned long'; this literal will be ill-formed in C++11 onwards}}
+// expected-warning@75 {{integer literal is too large to be represented in type 'long', interpreting as 'unsigned long' per C++98; this literal will be ill-formed in C++11 onwards}}
+// expected-warning@76 {{integer literal is too large to be represented in type 'long', interpreting as 'unsigned long' per C++98; this literal will be ill-formed in C++11 onwards}}
+#endif
+#else
+
+/******************************************************************************
+ * The status quo in C99/C++11-and-later modes for the literals in question is
+ * to interpret them as unsigned as an extension.
+ ******************************************************************************/
+// expected-warning@74 {{integer literal is too large to be represented in a signed integer type, interpreting as unsigned}}
+// expected-warning@75 {{integer literal is too large to be represented in a signed integer type, interpreting as unsigned}}
+// expected-warning@76 {{integer literal is too large to be represented in a signed integer type, interpreting as unsigned}}
+#endif
+#endif
+
+
+/******************************************************************************
+ * Test preprocessor arithmetic with 2^31 as a decimal literal with no suffix
+ * and with the "l" and "L" cases.
+ ******************************************************************************/
+#if !IS_ULONG(X32TYPE)
+
+/******************************************************************************
+ * If the literal is signed without need for the modified range of the signed
+ * integer types within the controlling constant expression for conditional
+ * inclusion, then it will also be signed with said modified range.
+ ******************************************************************************/
+#define EXPR(X) ((X - X) - 1 < 0)
+#else
+
+/******************************************************************************
+ * Strictly speaking, in pre-C99/C++11 ISO C/C++, the preprocessor arithmetic is
+ * evaluated with the range of long/unsigned long; however, both Clang and GCC
+ * evaluate using 64-bits even when long/unsigned long are 32-bits outside of
+ * preprocessing.
+ *
+ * If the range used becomes 32-bits, then this test will enforce the treatment
+ * as unsigned of the literals in question.
+ *
+ * Note:
+ * Under pre-C99/C++11 ISO C/C++, whether the interpretation of the literal is
+ * affected by the modified range of the signed and unsigned integer types
+ * within the controlling constant expression for conditional inclusion is
+ * unclear.
+ ******************************************************************************/
+#define PP_LONG_MAX ((0ul - 1ul) >> 1)
+#define EXPR(X)                                                                \
+  (PP_LONG_MAX >= 0x80000000 || (X - X) - 1 > 0) // either 2^31 fits into a
+                                                 // preprocessor "long" or the
+                                                 // literals in question are
+                                                 // unsigned
+#endif
+
+#if !(EXPR(2147483648) && EXPR(2147483648l) && EXPR(2147483648L))
+#error Unexpected signedness or conversion behavior
+#endif