| /* Verify that -Walloc-size-greater-than doesn't cause false positives |
| for anti-ranges. Note that not all of the statements used to create |
| anti-ranges below result in the argument being represented as an anti |
| range. |
| |
| { dg-do compile } |
| { dg-options "-O2 -Walloc-size-larger-than=12" } |
| { dg-options "-Wno-overflow" { target { ! int32plus } } } */ |
| |
| #define SCHAR_MAX __SCHAR_MAX__ |
| #define SCHAR_MIN (-SCHAR_MAX - 1) |
| #define UCHAR_MAX (SCHAR_MAX * 2 + 1) |
| |
| #define SHRT_MAX __SHRT_MAX__ |
| #define SHRT_MIN (-SHRT_MAX - 1) |
| #define USHRT_MAX (SHRT_MAX * 2U + 1) |
| |
| #define INT_MAX __INT_MAX__ |
| #define INT_MIN (-INT_MAX - 1) |
| #define UINT_MAX (INT_MAX * 2U + 1) |
| |
| #define LONG_MAX __LONG_MAX__ |
| #define LONG_MIN (-LONG_MAX - 1) |
| #define ULONG_MAX (LONG_MAX * 2LU + 1) |
| |
| #define PTRDIFF_MAX __PTRDIFF_MAX__ |
| #define PTRDIFF_MIN (-PTRDIFF_MAX - 1) |
| #define SIZE_MAX __SIZE_MAX__ |
| |
| typedef __PTRDIFF_TYPE__ ptrdiff_t; |
| typedef __SIZE_TYPE__ size_t; |
| |
| #define CONCAT(a, b) a ## b |
| #define CAT(a, b) CONCAT (a, b) |
| |
| /* Macro to generate a unique function to test the anti-range |
| ~[MIN, MAX] for type T. */ |
| #define TEST(T, min, max) \ |
| void* CAT (test_anti_range_, __LINE__)(T n) \ |
| { \ |
| extern void* CAT (alloc_anti_range_, __LINE__)(T) \ |
| __attribute__ ((alloc_size (1))); \ |
| if (min <= n && n <= max) \ |
| n = min - 1; \ |
| return CAT (alloc_anti_range_, __LINE__)(n); \ |
| } typedef void dummy /* Require a semicolon. */ |
| |
| |
| /* Verify the anti-range ~[TYPE_MAX - 1, TYPE_MAX - 1]. */ |
| TEST (signed char, SCHAR_MAX - 1, SCHAR_MAX - 1); |
| TEST (unsigned char, UCHAR_MAX - 1, UCHAR_MAX - 1); |
| TEST (short, SHRT_MAX - 1, SHRT_MAX - 1); |
| TEST (unsigned short, USHRT_MAX - 1, USHRT_MAX - 1); |
| TEST (int, INT_MAX - 1, INT_MAX - 1); |
| TEST (unsigned, UINT_MAX - 1, UINT_MAX - 1); |
| TEST (long, LONG_MAX - 1, LONG_MAX - 1); |
| TEST (unsigned long, ULONG_MAX - 1, ULONG_MAX - 1); |
| TEST (ptrdiff_t, PTRDIFF_MAX - 1, PTRDIFF_MAX - 1); |
| TEST (size_t, SIZE_MAX - 1, SIZE_MAX - 1); |
| |
| /* Verify ~[0, 0]. */ |
| TEST (signed char, 0, 0); |
| TEST (unsigned char, 0, 0); |
| TEST (short, 0, 0); |
| TEST (unsigned short, 0, 0); |
| TEST (int, 0, 0); |
| TEST (unsigned, 0, 0); |
| TEST (long, 0, 0); |
| TEST (unsigned long, 0, 0); |
| TEST (ptrdiff_t, 0, 0); |
| TEST (size_t, 0, 0); |
| |
| /* Verify ~[1, 1]. */ |
| TEST (signed char, 1, 1); |
| TEST (unsigned char, 1, 1); |
| TEST (short, 1, 1); |
| TEST (unsigned short, 1, 1); |
| TEST (int, 1, 1); |
| TEST (unsigned, 1, 1); |
| TEST (long, 1, 1); |
| TEST (unsigned long, 1, 1); |
| TEST (ptrdiff_t, 1, 1); |
| TEST (size_t, 1, 1); |
| |
| |
| /* Verify ~[TYPE_MAX - 2, TYPE_MAX - 1]. */ |
| TEST (signed char, SCHAR_MAX - 2, SCHAR_MAX - 1); |
| TEST (unsigned char, UCHAR_MAX - 2, UCHAR_MAX - 1); |
| TEST (short, SHRT_MAX - 2, SHRT_MAX - 1); |
| TEST (unsigned short, USHRT_MAX - 2, USHRT_MAX - 1); |
| TEST (int, INT_MAX - 2, INT_MAX - 1); |
| TEST (unsigned, UINT_MAX - 2, UINT_MAX - 1); |
| TEST (long, LONG_MAX - 2, LONG_MAX - 1); |
| TEST (unsigned long, ULONG_MAX - 2, ULONG_MAX - 1); |
| TEST (ptrdiff_t, PTRDIFF_MAX - 2, PTRDIFF_MAX - 1); |
| TEST (size_t, SIZE_MAX - 2, SIZE_MAX - 1); |
| |
| /* Verify ~[0, 2]. */ |
| TEST (signed char, 0, 2); |
| TEST (unsigned char, 0, 2); |
| TEST (short, 0, 2); |
| TEST (unsigned short, 0, 2); |
| TEST (int, 0, 2); |
| TEST (unsigned int, 0, 2); |
| TEST (long, 0, 2); |
| TEST (unsigned long, 0, 2); |
| TEST (ptrdiff_t, 0, 2); |
| TEST (size_t, 0, 2); |
| |
| /* Verify the signed anti-range ~[TYPE_MIN - 2, -1]. */ |
| TEST (signed char, SCHAR_MIN + 2, -1); |
| TEST (short, SHRT_MIN + 2, -1); |
| TEST (int, INT_MIN + 2, -1); |
| TEST (long, LONG_MIN + 2, -1); |
| TEST (ptrdiff_t, PTRDIFF_MIN + 2, -1); |
| |
| /* Verify the signed anti-range ~[TYPE_MIN - 2, 0]. */ |
| TEST (signed char, SCHAR_MIN + 2, 0); |
| TEST (short, SHRT_MIN + 2, 0); |
| TEST (int, INT_MIN + 2, 0); |
| TEST (long, LONG_MIN + 2, 0); |
| TEST (ptrdiff_t, PTRDIFF_MIN + 2, 0); |
| |
| /* Verify the signed anti-range ~[TYPE_MIN - 2, 1]. */ |
| TEST (signed char, SCHAR_MIN + 2, 1); |
| TEST (short, SHRT_MIN + 2, 1); |
| TEST (int, INT_MIN + 2, 1); |
| TEST (long, LONG_MIN + 2, 1); |
| TEST (ptrdiff_t, PTRDIFF_MIN + 2, 1); |
| |
| /* Verify the signed anti-range ~[TYPE_MIN - 2, 2]. */ |
| TEST (signed char, SCHAR_MIN + 2, 2); |
| TEST (short, SHRT_MIN + 2, 2); |
| TEST (int, INT_MIN + 2, 2); |
| TEST (long, LONG_MIN + 2, 2); |
| TEST (ptrdiff_t, PTRDIFF_MIN + 2, 2); |
| |
| /* Verify the signed anti-range ~[-1, 2]. */ |
| TEST (signed char, -1, 2); |
| TEST (short, -1, 2); |
| TEST (int, -1, 2); |
| TEST (long, -1, 2); |
| TEST (ptrdiff_t, 01, 2); |