test/jdk/java/lang/invoke/condy/CondyNestedResolution.jcod - master - githubmirror/jdk17u-dev

test/jdk/java/lang/invoke/condy/CondyNestedResolution.jcod
427 строк14 KB
Lois Foltan
8203435: Circular nested dynamic constant test needed to confirm JVMS resolution behavior
04 июн 2018, 18:32
04 июн 2018, 18:326379f91
/*
 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
Pseudo Java code:

class CondyNestedResolution {
    public static Object bsm1arg(MethodHandles$Lookup p1, String p2, Object p3, Object p4) {
        System.out.println("In bsm1arg");
        System.out.println(p4);
        return p4;
    }
    public static Object bsm2arg(MethodHandles$Lookup p1, String p2, Object p3, Object p4, Object p5) {
        System.out.println("In bsm2arg");
        System.out.println(p4);
        System.out.println(p5);
        return p4;
    }
    public static Object bsm3arg(MethodHandles$Lookup p1, String p2, Object p3, Object p4, Object p5, Object p6) {
        System.out.println("In bsm3arg");
        System.out.println(p4);
        System.out.println(p5);
        System.out.println(p6);
        return p4;
    }
    public static Object bsm4arg(MethodHandles$Lookup p1, String p2, Object p3, Object p4, Object p5, Object p6, Object p7) {
        System.out.println("In bsm4arg");
        System.out.println(p4);
        System.out.println(p5);
        System.out.println(p6);
        System.out.println(p7);
        return p4;
    }

    public static void test_condy() {
        // The following condy of BSM#8 results in the invocation of bootstrap method bsm4arg with the following
        // parameters:
        // bsm4arg(bsm1arg("hello1"),
        //         bsm1arg("hello2"),
        //         bsm3arg(bsm1arg("hello4"), bsm2arg(bsm1arg("hello6"), (circular reference to BSM#8)), bsm1arg("hello5")),
        //         bsm1arg("hello3"));
        // JVMS 5.4.3.6 Dynamically-Computed Constant and Call Site Resolution
        // Ensure that calls to bsm1arg("hello5") and bsm1arg("hello3") are never resolved due to the nested condy circularity
        // which results in a StackOverflowError.
        //
        ldc Dynamic BSM#8;
    }
    public static void main(String args[]) {
        CondyNestedResolution.test_condy();
    }
}

BootstrapMethods:
  BSM0=invokestatic CondyNestedResolution.bsm1arg("hello1");
  BSM1=invokestatic CondyNestedResolution.bsm1arg("hello2");
  BSM2=invokestatic CondyNestedResolution.bsm1arg("hello4");
  BSM3=invokestatic CondyNestedResolution.bsm1arg("hello6");
  BSM4=invokestatic CondyNestedResolution.bsm2arg(BSM#3, BSM#8);
  BSM5=invokestatic CondyNestedResolution.bsm1arg("hello5");
  BSM6=invokestatic CondyNestedResolution.bsm3arg(BSM#2, BSM#4, BSM#5);
  BSM7=invokestatic CondyNestedResolution.bsm1arg("hello3");
  BSM8=invokestatic CondyNestedResolution.bsm4arg(BSM#0, BSM#1, BSM#6, BSM#7);

Expected output:
  In bsm1arg
  hello1
  In bsm1arg
  hello2
  In bsm1arg
  hello4
  In bsm1arg
  hello6
  Exception in thread "main" java.lang.StackOverflowError
          at java.base/java.lang.invoke.MethodHandleNatives.copyOutBootstrapArguments(Native Method)
*/


class CondyNestedResolution {
  0xCAFEBABE;
  0; // minor version
  55; // version
  [85] { // Constant Pool
    ; // first element is empty
    String #22; // #1     at 0x0A
    String #61; // #2     at 0x0D
    String #11; // #3     at 0x10
    Dynamic 8s #12; // #4     at 0x13
    Method #51 #10; // #5     at 0x18
    Method #13 #39; // #6     at 0x1D
    Field #50 #81; // #7     at 0x22
    Method #84 #45; // #8     at 0x27
    Utf8 "java/io/PrintStream"; // #9     at 0x2C
    NameAndType #71 #47; // #10     at 0x42
    Utf8 "In bsm1arg"; // #11     at 0x47
    NameAndType #18 #17; // #12     at 0x54
    class #9; // #13     at 0x59
    Utf8 "SourceFile"; // #14     at 0x5C
    Utf8 "bsm3arg"; // #15     at 0x69
    Utf8 "CondyNestedResolution.jasm"; // #16     at 0x73
    Utf8 "Ljava/lang/String;"; // #17     at 0x90
    Utf8 "name"; // #18     at 0xA5
    Utf8 "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;"; // #19     at 0xAC
    Utf8 "test_condy"; // #20     at 0x0144
    NameAndType #15 #19; // #21     at 0x0151
    Utf8 "In bsm2arg"; // #22     at 0x0156
    Utf8 "Code"; // #23     at 0x0163
    Utf8 "([Ljava/lang/String;)V"; // #24     at 0x016A
    Utf8 "bsm4arg"; // #25     at 0x0183
    Utf8 "out"; // #26     at 0x018D
    NameAndType #69 #55; // #27     at 0x0193
    Utf8 "BootstrapMethods"; // #28     at 0x0198
    MethodHandle 6b #44; // #29     at 0x01AB
    Method #84 #63; // #30     at 0x01AF
    Utf8 "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;"; // #31     at 0x01B4
    Method #84 #27; // #32     at 0x0228
    MethodHandle 6b #30; // #33     at 0x022D
    MethodHandle 6b #30; // #34     at 0x0231
    MethodHandle 6b #30; // #35     at 0x0235
    MethodHandle 6b #30; // #36     at 0x0239
    MethodHandle 6b #30; // #37     at 0x023D
    MethodHandle 6b #30; // #38     at 0x0241
    NameAndType #40 #41; // #39     at 0x0245
    Utf8 "println"; // #40     at 0x024A
    Utf8 "(Ljava/lang/Object;)V"; // #41     at 0x0254
    Utf8 "java/lang/Object"; // #42     at 0x026C
    Utf8 "java/lang/System"; // #43     at 0x027F
    Method #84 #21; // #44     at 0x0292
    NameAndType #20 #47; // #45     at 0x0297
    MethodHandle 6b #82; // #46     at 0x029C
    Utf8 "()V"; // #47     at 0x02A0
    String #62; // #48     at 0x02A6
    String #64; // #49     at 0x02A9
    class #43; // #50     at 0x02AC
    class #42; // #51     at 0x02AF
    String #65; // #52     at 0x02B2
    String #66; // #53     at 0x02B5
    String #67; // #54     at 0x02B8
    Utf8 "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;"; // #55     at 0x02BB
    Utf8 "main"; // #56     at 0x0341
    String #68; // #57     at 0x0348
    MethodHandle 6b #32; // #58     at 0x034B
    Utf8 "bsm1arg"; // #59     at 0x034F
    NameAndType #25 #83; // #60     at 0x0359
    Utf8 "In bsm4arg"; // #61     at 0x035E
    Utf8 "hello6"; // #62     at 0x036B
    NameAndType #59 #31; // #63     at 0x0374
    Utf8 "hello5"; // #64     at 0x0379
    Utf8 "hello4"; // #65     at 0x0382
    Utf8 "hello3"; // #66     at 0x038B
    Utf8 "hello2"; // #67     at 0x0394
    Utf8 "hello1"; // #68     at 0x039D
    Utf8 "bsm2arg"; // #69     at 0x03A6
    Utf8 "Ljava/io/PrintStream;"; // #70     at 0x03B0
    Utf8 "<init>"; // #71     at 0x03C8
    Utf8 "CondyNestedResolution"; // #72     at 0x03D1
    Dynamic 7s #12; // #73     at 0x03E9
    Dynamic 6s #12; // #74     at 0x03EE
    Dynamic 5s #12; // #75     at 0x03F3
    Dynamic 4s #12; // #76     at 0x03F8
    Dynamic 3s #12; // #77     at 0x03FD
    Dynamic 0s #12; // #78     at 0x0402
    Dynamic 1s #12; // #79     at 0x0407
    Dynamic 2s #12; // #80     at 0x040C
    NameAndType #26 #70; // #81     at 0x0411
    Method #84 #60; // #82     at 0x0416
    Utf8 "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;"; // #83     at 0x041B
    class #72; // #84     at 0x04C5
  } // Constant Pool

  0x0000; // access [ ]
  #84;// this_cpx
  #51;// super_cpx

  [0] { // Interfaces
  } // Interfaces

  [0] { // fields
  } // fields

  [7] { // methods
    { // Member at 0x04D4
      0x0001; // access
      #71; // name_cpx
      #47; // sig_cpx
      [1] { // Attributes
        Attr(#23, 17) { // Code at 0x04DC
          1; // max_stack
          1; // max_locals
          Bytes[5]{
            0x2AB70005B1;
          }
          [0] { // Traps
          } // end Traps
          [0] { // Attributes
          } // Attributes
        } // end Code
      } // Attributes
    } // Member
    ;
    { // Member at 0x04F3
      0x0009; // access
      #59; // name_cpx
      #31; // sig_cpx
      [1] { // Attributes
        Attr(#23, 29) { // Code at 0x04FB
          4; // max_stack
          4; // max_locals
          Bytes[17]{
            0xB200071203B60006;
            0xB200072DB600062D;
            0xB0;
          }
          [0] { // Traps
          } // end Traps
          [0] { // Attributes
          } // Attributes
        } // end Code
      } // Attributes
    } // Member
    ;
    { // Member at 0x051E
      0x0009; // access
      #69; // name_cpx
      #55; // sig_cpx
      [1] { // Attributes
        Attr(#23, 37) { // Code at 0x0526
          8; // max_stack
          8; // max_locals
          Bytes[25]{
            0xB200071201B60006;
            0xB200072DB60006B2;
            0x00071904B600062D;
            0xB0;
          }
          [0] { // Traps
          } // end Traps
          [0] { // Attributes
          } // Attributes
        } // end Code
      } // Attributes
    } // Member
    ;
    { // Member at 0x0551
      0x0009; // access
      #15; // name_cpx
      #19; // sig_cpx
      [1] { // Attributes
        Attr(#23, 45) { // Code at 0x0559
          19; // max_stack
          19; // max_locals
          Bytes[33]{
            0xB200071202B60006;
            0xB200072DB60006B2;
            0x00071904B60006B2;
            0x00071905B600062D;
            0xB0;
          }
          [0] { // Traps
          } // end Traps
          [0] { // Attributes
          } // Attributes
        } // end Code
      } // Attributes
    } // Member
    ;
    { // Member at 0x058C
      0x0009; // access
      #25; // name_cpx
      #83; // sig_cpx
      [1] { // Attributes
        Attr(#23, 53) { // Code at 0x0594
          19; // max_stack
          19; // max_locals
          Bytes[41]{
            0xB200071202B60006;
            0xB200072DB60006B2;
            0x00071904B60006B2;
            0x00071905B60006B2;
            0x00071906B600062D;
            0xB0;
          }
          [0] { // Traps
          } // end Traps
          [0] { // Attributes
          } // Attributes
        } // end Code
      } // Attributes
    } // Member
    ;
    { // Member at 0x05CF
      0x0009; // access
      #20; // name_cpx
      #47; // sig_cpx
      [1] { // Attributes
        Attr(#23, 15) { // Code at 0x05D7
          12; // max_stack
          12; // max_locals
          Bytes[3]{
            0x1204B1;
          }
          [0] { // Traps
          } // end Traps
          [0] { // Attributes
          } // Attributes
        } // end Code
      } // Attributes
    } // Member
    ;
    { // Member at 0x05EC
      0x0009; // access
      #56; // name_cpx
      #24; // sig_cpx
      [1] { // Attributes
        Attr(#23, 16) { // Code at 0x05F4
          2; // max_stack
          2; // max_locals
          Bytes[4]{
            0xB80008B1;
          }
          [0] { // Traps
          } // end Traps
          [0] { // Attributes
          } // Attributes
        } // end Code
      } // Attributes
    } // Member
  } // methods

  [2] { // Attributes
    Attr(#14, 2) { // SourceFile at 0x060C
      #16;
    } // end SourceFile
    ;
    Attr(#28, 68) { // BootstrapMethods at 0x0614
      [9] { // bootstrap_methods
        {  //  bootstrap_method
          #36; // bootstrap_method_ref
          [1] { // bootstrap_arguments
            #57; //  at 0x0622
          }  //  bootstrap_arguments
        }  //  bootstrap_method
        ;
        {  //  bootstrap_method
          #37; // bootstrap_method_ref
          [1] { // bootstrap_arguments
            #54; //  at 0x0628
          }  //  bootstrap_arguments
        }  //  bootstrap_method
        ;
        {  //  bootstrap_method
          #38; // bootstrap_method_ref
          [1] { // bootstrap_arguments
            #52; //  at 0x062E
          }  //  bootstrap_arguments
        }  //  bootstrap_method
        ;
        {  //  bootstrap_method
          #35; // bootstrap_method_ref
          [1] { // bootstrap_arguments
            #48; //  at 0x0634
          }  //  bootstrap_arguments
        }  //  bootstrap_method
        ;
        {  //  bootstrap_method
          #58; // bootstrap_method_ref
          [2] { // bootstrap_arguments
            #77; //  at 0x063A
            #4; //  at 0x063C
          }  //  bootstrap_arguments
        }  //  bootstrap_method
        ;
        {  //  bootstrap_method
          #34; // bootstrap_method_ref
          [1] { // bootstrap_arguments
            #49; //  at 0x0642
          }  //  bootstrap_arguments
        }  //  bootstrap_method
        ;
        {  //  bootstrap_method
          #29; // bootstrap_method_ref
          [3] { // bootstrap_arguments
            #80; //  at 0x0648
            #76; //  at 0x064A
            #75; //  at 0x064C
          }  //  bootstrap_arguments
        }  //  bootstrap_method
        ;
        {  //  bootstrap_method
          #33; // bootstrap_method_ref
          [1] { // bootstrap_arguments
            #53; //  at 0x0652
          }  //  bootstrap_arguments
        }  //  bootstrap_method
        ;
        {  //  bootstrap_method
          #46; // bootstrap_method_ref
          [4] { // bootstrap_arguments
            #78; //  at 0x0658
            #79; //  at 0x065A
            #74; //  at 0x065C
            #73; //  at 0x065E
          }  //  bootstrap_arguments
        }  //  bootstrap_method
      }
    } // end BootstrapMethods
  } // Attributes
} // end class CondyNestedResolution