tests/unit/gcc-weak-hidden/main.c

   1 /*
   2  * Copyright (C) 2016 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   3  *
   4  * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
   5  * OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
   6  *
   7  * Permission is hereby granted to use or copy this program for any
   8  * purpose, provided the above notices are retained on all copies.
   9  * Permission to modify the code and to distribute modified code is
  10  * granted, provided the above notices are retained, and a notice that
  11  * the code was modified is included with the above copyright notice.
  12  */
  13
  14 #include <stdbool.h>
  15 #include "tap.h"
  16
  17 #define NUM_TESTS 2
  18
  19 int testint __attribute__((weak, visibility("hidden")));
  20 void *testptr __attribute__((weak, visibility("hidden")));
  21 struct {
  22         char a[24];
  23 } testsym_24_bytes __attribute__((weak, visibility("hidden")));
  24
  25 void *testfct_int(void);
  26 void *testfct_ptr(void);
  27 void *testfct_24_bytes(void);
  28
  29 void *testlibfct1_int(void);
  30 void *testlibfct1_ptr(void);
  31 void *testlibfct1_24_bytes(void);
  32
  33 void *testlibfct2_int(void);
  34 void *testlibfct2_ptr(void);
  35 void *testlibfct2_24_bytes(void);
  36
  37 enum {
  38         MATCH_PROGRAM_INT,
  39         MATCH_PROGRAM_PTR,
  40         MATCH_PROGRAM_24_BYTES,
  41         MATCH_LIB_INT,
  42         MATCH_LIB_PTR,
  43         MATCH_LIB_24_BYTES,
  44         NR_MATCH,
  45 };
  46
  47 static bool match_matrix[NR_MATCH];
  48
  49 int main()
  50 {
  51         plan_tests(NUM_TESTS);
  52
  53         if (testfct_int() == &testint)
  54                 match_matrix[MATCH_PROGRAM_INT] = true;
  55         if (testfct_ptr() == &testptr)
  56                 match_matrix[MATCH_PROGRAM_PTR] = true;
  57         if (testfct_24_bytes() == &testsym_24_bytes)
  58                 match_matrix[MATCH_PROGRAM_24_BYTES] = true;
  59
  60         if (testlibfct1_int() == testlibfct2_int())
  61                 match_matrix[MATCH_LIB_INT] = true;
  62         if (testlibfct1_ptr() == testlibfct2_ptr())
  63                 match_matrix[MATCH_LIB_PTR] = true;
  64         if (testlibfct1_24_bytes() == testlibfct2_24_bytes())
  65                 match_matrix[MATCH_LIB_24_BYTES] = true;
  66
  67         diag("Address of weak symbol with hidden visibility %s between compile units within same module for main program (4 bytes integer object)",
  68                 match_matrix[MATCH_PROGRAM_INT] ? "match" : "MISMATCH");
  69         diag("Address of weak symbol with hidden visibility %s between compile units within same module for main program (pointer object)",
  70                 match_matrix[MATCH_PROGRAM_PTR] ? "match" : "MISMATCH");
  71         diag("Address of weak symbol with hidden visibility %s between compile units within same module for main program (24 bytes structure object)",
  72                 match_matrix[MATCH_PROGRAM_24_BYTES] ? "match" : "MISMATCH");
  73
  74         diag("Address of weak symbol with hidden visibility %s between compile units within same module for shared library (4 bytes integer object)",
  75                 match_matrix[MATCH_LIB_INT] ? "match" : "MISMATCH");
  76         diag("Address of weak symbol with hidden visibility %s between compile units within same module for shared library (pointer object)",
  77                 match_matrix[MATCH_LIB_PTR] ? "match" : "MISMATCH");
  78         diag("Address of weak symbol with hidden visibility %s between compile units within same module for shared library (24 bytes structure object)",
  79                 match_matrix[MATCH_LIB_24_BYTES] ? "match" : "MISMATCH");
  80
  81         ok(match_matrix[MATCH_PROGRAM_INT] == match_matrix[MATCH_PROGRAM_PTR],
  82                 "Weak-hidden behavior is the same for 4 bytes integer and pointer objects within main program");
  83         ok(match_matrix[MATCH_LIB_INT] == match_matrix[MATCH_LIB_PTR],
  84                 "Weak-hidden behavior is the same for 4 bytes integer and pointer objects within shared library");
  85
  86         return exit_status();
  87 }