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111
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1 /* Verify that -Walloc-size-greater-than doesn't cause false positives
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2 for anti-ranges. Note that not all of the statements below result
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3 in the argument being represented as an anti-range.
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4
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5 { dg-do compile }
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6 { dg-options "-O2 -Walloc-size-larger-than=12 -ftrack-macro-expansion=0" } */
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7
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8 #define SCHAR_MAX __SCHAR_MAX__
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9 #define SCHAR_MIN (-SCHAR_MAX - 1)
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10 #define UCHAR_MAX (SCHAR_MAX * 2 + 1)
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11
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12 #define SHRT_MAX __SHRT_MAX__
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13 #define SHRT_MIN (-SHRT_MAX - 1)
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14 #define USHRT_MAX (SHRT_MAX * 2 + 1)
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15
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16 #define INT_MAX __INT_MAX__
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17 #define INT_MIN (-INT_MAX - 1)
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18 #define UINT_MAX (INT_MAX * 2U + 1)
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19
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20 #define LONG_MAX __LONG_MAX__
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21 #define LONG_MIN (-LONG_MAX - 1)
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22 #define ULONG_MAX (LONG_MAX * 2LU + 1)
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23
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24 #define PTRDIFF_MAX __PTRDIFF_MAX__
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25 #define PTRDIFF_MIN (-PTRDIFF_MAX - 1)
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26 #define SIZE_MAX __SIZE_MAX__
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27
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28 #define ALLOC_MAX 12
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29
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30 typedef __PTRDIFF_TYPE__ ptrdiff_t;
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31 typedef __SIZE_TYPE__ size_t;
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32
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33 #define CONCAT(a, b) a ## b
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34 #define CAT(a, b) CONCAT (a, b)
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35
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36 /* Macro to generate a unique function to test the anti-range
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37 ~[MIN, MAX] for type T. */
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38 #define TEST(T, min, max) \
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39 void* CAT (test_anti_range_, __LINE__)(T n) \
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40 { \
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41 extern void* CAT (alloc_anti_range_, __LINE__)(T) \
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42 __attribute__ ((alloc_size (1))); \
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43 if (min <= n && n <= max) \
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44 n = min - 1; \
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45 return CAT (alloc_anti_range_, __LINE__)(n); \
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46 } typedef void dummy /* Require a semicolon. */
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47
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48 /* The following tests fail because of missing range information. The xfail
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49 exclusions are PR79356. */
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131
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50 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*-*-* avr-*-* alpha*-*-* ia64-*-* mips*-*-* powerpc*-*-* sparc*-*-* s390*-*-* visium-*-* } } } } */
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51 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*-*-* avr-*-* ia64-*-* mips*-*-* powerpc*-*-* sparc*-*-* s390x-*-* visium-*-* } } } } */
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111
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52 TEST (int, INT_MIN + 2, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */
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53 TEST (int, -3, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */
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54 TEST (int, -2, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */
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55 TEST (int, -1, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */
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56 TEST (int, 0, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */
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57 TEST (int, 1, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */
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58 TEST (int, 1, INT_MAX - 1); /* { dg-warning "argument 1 range \\\[\[0-9\]+, \[0-9\]+\\\] exceeds maximum object size 12" } */
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59
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60 /* The following two aren't necessarily anti-ranges. */
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61 TEST (int, 1, INT_MAX); /* { dg-warning "argument 1 range \\\[-\[0-9\]+, 0\\\] is negative" } */
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62 TEST (int, 0, INT_MAX); /* { dg-warning "argument 1 range \\\[-\[0-9\]+, -1\\\] is negative" } */
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63
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64 TEST (long, LONG_MIN + 2, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */
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65 TEST (ptrdiff_t, PTRDIFF_MIN + 2, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */
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66
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67 TEST (unsigned, 0, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */
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68 TEST (unsigned long, 0, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */
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69 TEST (size_t, 0, ALLOC_MAX); /* { dg-warning "argument 1 range \\\[13, \[0-9\]+\\\] exceeds maximum object size 12" } */
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