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111
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1 -- C420001.A
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2 --
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3 -- Grant of Unlimited Rights
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4 --
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5 -- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687 and
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6 -- F08630-91-C-0015, the U.S. Government obtained unlimited rights in the
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7 -- software and documentation contained herein. Unlimited rights are
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8 -- defined in DFAR 252.227-7013(a)(19). By making this public release,
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9 -- the Government intends to confer upon all recipients unlimited rights
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10 -- equal to those held by the Government. These rights include rights to
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11 -- use, duplicate, release or disclose the released technical data and
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12 -- computer software in whole or in part, in any manner and for any purpose
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13 -- whatsoever, and to have or permit others to do so.
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14 --
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15 -- DISCLAIMER
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16 --
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17 -- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
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18 -- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
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19 -- WARRANTY AS TO ANY MATTER WHATSOVER, INCLUDING THE CONDITIONS OF THE
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20 -- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
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21 -- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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22 -- PARTICULAR PURPOSE OF SAID MATERIAL.
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23 --*
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24 --
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25 -- OBJECTIVE
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26 -- Check that if the index subtype of a string type is a modular subtype
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27 -- whose lower bound is zero, then the evaluation of a null string_literal
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28 -- raises Constraint_Error. This was confirmed by AI95-00138.
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29 --
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30 -- TEST DESCRIPTION
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31 -- In this test, we have a generic formal modular type, and we have
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32 -- several null string literals of that type. Because the type is
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33 -- generic formal, the string literals are not static, and therefore
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34 -- the Constraint_Error should be detected at run time.
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35 --
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36 -- CHANGE HISTORY:
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37 -- 29 JUN 1999 RAD Initial Version
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38 -- 23 SEP 1999 RLB Improved comments and messages, renamed, issued.
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39 --
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40 --!
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41 with Report; use Report; pragma Elaborate_All(Report);
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42 with System;
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43 procedure C420001 is
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44 generic
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45 type Modular is mod <>;
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46 package Mod_Test is
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47 type Str is array(Modular range <>) of Character;
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48 procedure Test_String_Literal;
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49 end Mod_Test;
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50
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51 package body Mod_Test is
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52 procedure Test_String_Literal is
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53 begin
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54 begin
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55 declare
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56 Null_String: Str := ""; -- Should raise C_E.
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57 begin
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58 Comment(String(Null_String)); -- Avoid 11.6 issues.
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59 end;
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60 Failed("Null string didn't raise Constraint_Error");
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61 exception
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62 when Exc: Constraint_Error =>
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63 null; -- Comment("Constraint_Error -- OK");
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64 when Exc2: others =>
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65 Failed("Null string raised wrong exception");
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66 end;
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67 begin
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68 Failed(String(Str'(""))); -- Should raise C_E, not do Failed.
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69 Failed("Null string didn't raise Constraint_Error");
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70 exception
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71 when Exc: Constraint_Error =>
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72 null; -- Comment("Constraint_Error -- OK");
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73 when Exc2: others =>
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74 Failed("Null string raised wrong exception");
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75 end;
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76 end Test_String_Literal;
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77 begin
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78 Test_String_Literal;
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79 end Mod_Test;
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80 begin
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81 Test("C420001", "Check that if the index subtype of a string type is a " &
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82 "modular subtype whose lower bound is zero, then the " &
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83 "evaluation of a null string_literal raises " &
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84 "Constraint_Error. ");
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85 declare
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86 type M1 is mod 1;
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87 package Test_M1 is new Mod_Test(M1);
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88 type M2 is mod 2;
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89 package Test_M2 is new Mod_Test(M2);
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90 type M3 is mod 3;
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91 package Test_M3 is new Mod_Test(M3);
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92 type M4 is mod 4;
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93 package Test_M4 is new Mod_Test(M4);
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94 type M5 is mod 5;
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95 package Test_M5 is new Mod_Test(M5);
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96 type M6 is mod 6;
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97 package Test_M6 is new Mod_Test(M6);
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98 type M7 is mod 7;
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99 package Test_M7 is new Mod_Test(M7);
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100 type M8 is mod 8;
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101 package Test_M8 is new Mod_Test(M8);
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102 type M_Max_Binary_Modulus is mod System.Max_Binary_Modulus;
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103 package Test_M_Max_Binary_Modulus is new Mod_Test(M_Max_Binary_Modulus);
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104 type M_Max_Nonbinary_Modulus is mod System.Max_Nonbinary_Modulus;
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105 package Test_M_Max_Nonbinary_Modulus is new Mod_Test(M_Max_Nonbinary_Modulus);
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106 begin
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107 null;
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108 end;
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109 Result;
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110 end C420001;
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