| /* Verify that -Walloc-size-greater-than doesn't cause false positives |
| for anti-ranges. Note that not all of the statements below result |
| in the argument being represented as an anti-range. |
| |
| { dg-do compile } |
| { dg-options "-O2 -Walloc-size-larger-than=12 -ftrack-macro-expansion=0" } */ |
| |
| #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 * 2 + 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__ |
| |
| #define ALLOC_MAX 12 |
| |
| 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. */ |
| |
| /* The following tests fail because of missing range information. The xfail |
| exclusions are PR79356. */ |
| TEST (signed char, SCHAR_MIN + 2, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" "missing range info for signed char" { xfail { ! { aarch64*-*-* arm*-*-* alpha*-*-* ia64-*-* mips*-*-* powerpc*-*-* sparc*-*-* s390*-*-* visium-*-* } } } } */ |
| TEST (short, SHRT_MIN + 2, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" "missing range info for short" { xfail { ! { aarch64*-*-* arm*-*-* alpha*-*-* ia64-*-* mips*-*-* powerpc*-*-* sparc*-*-* s390x-*-* visium-*-* } } } } */ |
| TEST (int, INT_MIN + 2, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */ |
| TEST (int, -3, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */ |
| TEST (int, -2, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */ |
| TEST (int, -1, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */ |
| TEST (int, 0, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */ |
| TEST (int, 1, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */ |
| TEST (int, 1, INT_MAX - 1); /* { dg-warning "argument 1 range \\\[\[0-9\]+, \[0-9\]+\\\] exceeds maximum object size 12" } */ |
| |
| /* The following two aren't necessarily anti-ranges. */ |
| TEST (int, 1, INT_MAX); /* { dg-warning "argument 1 range \\\[-\[0-9\]+, 0\\\] is negative" } */ |
| TEST (int, 0, INT_MAX); /* { dg-warning "argument 1 range \\\[-\[0-9\]+, -1\\\] is negative" } */ |
| |
| TEST (long, LONG_MIN + 2, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */ |
| TEST (ptrdiff_t, PTRDIFF_MIN + 2, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */ |
| |
| TEST (unsigned, 0, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */ |
| TEST (unsigned long, 0, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */ |
| TEST (size_t, 0, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */ |
