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111
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1 /* Test strncmp builtin expansion for compilation and proper execution. */
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145
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2 /* { dg-do run { target *-*-linux* *-*-gnu* *-*-uclinux* } } */
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111
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3 /* { dg-options "-O2" } */
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4 /* { dg-require-effective-target ptr32plus } */
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5
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6 #include <stdio.h>
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7 #include <stdlib.h>
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8 #include <string.h>
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9 #include <sys/mman.h>
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10 #include <unistd.h>
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11 #include <stdlib.h>
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12
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13 int lib_memcmp(const void *a, const void *b, size_t n) asm("memcmp");
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14 int lib_strncmp(const char *a, const char *b, size_t n) asm("strncmp");
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15
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16 static void test_driver_strncmp (void (test_strncmp)(const char *, const char *, int),
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17 void (test_memcmp)(const void *, const void *, int),
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18 size_t sz)
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19 {
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20 long pgsz = sysconf(_SC_PAGESIZE);
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21 char buf1[sz+1];
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22 char *buf2;
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23 #if _POSIX_C_SOURCE >= 200112L
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24 if ( posix_memalign ((void **)&buf2, pgsz, 2*pgsz) ) abort ();
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25 #else
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26 if ( !(buf2 = valloc(2*pgsz))) abort ();
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27 #endif
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28 char *p2;
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29 int r,i,e;
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30
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31 r = mprotect (buf2+pgsz,pgsz,PROT_NONE);
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32 if (r < 0) abort();
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33
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34 memset(buf1,'A',sz);
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35 for(i=10; i>=0; i--) {
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36 p2 = buf2+pgsz-sz-i;
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37 memset(p2,'A',sz);
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38 e = lib_strncmp(buf1,p2,sz);
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39 (*test_strncmp)(buf1,p2,e);
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40 e = lib_memcmp(buf1,p2,sz);
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41 (*test_memcmp)(buf1,p2,e);
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42 }
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43 free(buf2);
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44 }
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45
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46 #define RUN_TEST(SZ) test_driver_strncmp (test_strncmp_ ## SZ, test_memcmp_ ## SZ, SZ);
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47
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48 #define DEF_TEST(SZ) \
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49 __attribute__((noinline)) \
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50 void test_strncmp_ ## SZ (const char *str1, const char *str2, int expect) \
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51 { \
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52 int r; \
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53 r = strncmp(str1,str2,SZ); \
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54 if ( r < 0 && !(expect < 0) ) abort(); \
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55 if ( r > 0 && !(expect > 0) ) abort(); \
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56 if ( r == 0 && !(expect == 0) ) abort(); \
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57 } \
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58 __attribute__((noinline)) \
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59 void test_memcmp_ ## SZ (const void *p1, const void *p2, int expect) \
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60 { \
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61 int r; \
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62 r = memcmp(p1,p2,SZ); \
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63 if ( r < 0 && !(expect < 0) ) abort(); \
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64 if ( r > 0 && !(expect > 0) ) abort(); \
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65 if ( r == 0 && !(expect == 0) ) abort(); \
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66 }
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67
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68 DEF_TEST(1)
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69 DEF_TEST(2)
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70 DEF_TEST(3)
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71 DEF_TEST(4)
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72 DEF_TEST(5)
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73 DEF_TEST(6)
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74 DEF_TEST(7)
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75 DEF_TEST(8)
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76 DEF_TEST(9)
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77 DEF_TEST(10)
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78 DEF_TEST(11)
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79 DEF_TEST(12)
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80 DEF_TEST(13)
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81 DEF_TEST(14)
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82 DEF_TEST(15)
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83 DEF_TEST(16)
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131
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84 DEF_TEST(32)
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85 DEF_TEST(64)
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86 DEF_TEST(65)
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87 DEF_TEST(66)
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88 DEF_TEST(67)
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89 DEF_TEST(68)
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90 DEF_TEST(69)
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91 DEF_TEST(70)
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92 DEF_TEST(71)
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111
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93
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94 int
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95 main(int argc, char **argv)
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96 {
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97 RUN_TEST(1) ;
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98 RUN_TEST(2) ;
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99 RUN_TEST(3) ;
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100 RUN_TEST(4) ;
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101 RUN_TEST(5) ;
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102 RUN_TEST(6) ;
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103 RUN_TEST(7) ;
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104 RUN_TEST(8) ;
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105 RUN_TEST(9) ;
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106 RUN_TEST(10);
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107 RUN_TEST(11);
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108 RUN_TEST(12);
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109 RUN_TEST(13);
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110 RUN_TEST(14);
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111 RUN_TEST(15);
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112 RUN_TEST(16);
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131
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113 RUN_TEST(32);
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114 RUN_TEST(64);
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115 RUN_TEST(65);
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116 RUN_TEST(66);
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117 RUN_TEST(67);
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118 RUN_TEST(68);
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119 RUN_TEST(69);
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120 RUN_TEST(70);
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121 RUN_TEST(71);
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111
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122 return 0;
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123 }
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