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fix(wit-parser): fix a few bugs that found by fuzzing #1085

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merged 2 commits into from
Jun 22, 2023

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@Mossaka Mossaka commented Jun 21, 2023

This PR fixes two bugs:

  1. When there are multiple worlds in a WITpackage, but not every one of them are included in a world. This bug emerges from an use of out-of-bound index to get included world's span.
  2. The fully resolved world does not check naming conflict among its imported types, functions, exported functions with import/export interfaces.

Mossaka added 2 commits June 21, 2023 14:46
package, but not every one of them are included in a world. This
bug emerges from an use of out-of-bound index to get included
world's span.

Signed-off-by: Jiaxiao Zhou (Mossaka) <duibao55328@gmail.com>
1. verify that imported types, functions have no nameing conflict with exported interfaces.
2. verify that exported functions have no naming conflict with imported interfaces.

Signed-off-by: Jiaxiao Zhou (Mossaka) <duibao55328@gmail.com>
@Mossaka Mossaka changed the title fix(wit-parser): fix an index out of bounds bug fix(wit-parser): fix a few bugs that found by fuzzing Jun 21, 2023
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@alexcrichton alexcrichton merged commit 71c88ae into bytecodealliance:main Jun 22, 2023
@Mossaka Mossaka deleted the fix-span-bug branch June 22, 2023 23:31
alexcrichton added a commit to alexcrichton/wasm-tools that referenced this pull request Jul 11, 2023
Releases recent changes such as:

* More support for the gc proposal. bytecodealliance#1045 bytecodealliance#1059
* Support for resources throughout most tooling. bytecodealliance#1053 bytecodealliance#1068 bytecodealliance#1070 bytecodealliance#1082
  bytecodealliance#1079 bytecodealliance#1083 bytecodealliance#1084 bytecodealliance#1105 bytecodealliance#1113 bytecodealliance#1116
* Support for `include` in WIT files. bytecodealliance#1054 bytecodealliance#1085 bytecodealliance#1088
* WIT worlds may now be rejected if the same interface can be "reached"
  as both an import and an export simultaneously. bytecodealliance#1081 bytecodealliance#1107
* Support for registry metadata in `wasm-tools metadata`. bytecodealliance#1060
* A new subcommand `wasm-tools component targets`. bytecodealliance#1089
* An `--out-dir` argument is supported on `wasm-tools component wit` to
  print the entire `Resolve` instead of just one package. bytecodealliance#1108
* Miscellaneous bug fixes and improvements. bytecodealliance#1061 bytecodealliance#1065 bytecodealliance#1074 bytecodealliance#1073 bytecodealliance#1078 bytecodealliance#1077
  bytecodealliance#1072 bytecodealliance#1086 bytecodealliance#1091 bytecodealliance#1094 bytecodealliance#1114 bytecodealliance#1106
alexcrichton added a commit to alexcrichton/wasm-tools that referenced this pull request Jul 11, 2023
Releases recent changes such as:

* More support for the gc proposal.
  [bytecodealliance#1045](bytecodealliance#1045)
  [bytecodealliance#1059](bytecodealliance#1059)
* Support for resources throughout most tooling.
  [bytecodealliance#1053](bytecodealliance#1053)
  [bytecodealliance#1068](bytecodealliance#1068)
  [bytecodealliance#1070](bytecodealliance#1070)
  [bytecodealliance#1082](bytecodealliance#1082)
  [bytecodealliance#1079](bytecodealliance#1079)
  [bytecodealliance#1083](bytecodealliance#1083)
  [bytecodealliance#1084](bytecodealliance#1084)
  [bytecodealliance#1105](bytecodealliance#1105)
  [bytecodealliance#1113](bytecodealliance#1113)
  [bytecodealliance#1116](bytecodealliance#1116)
* Support for `include` in WIT files.
  [bytecodealliance#1054](bytecodealliance#1054)
  [bytecodealliance#1085](bytecodealliance#1085)
  [bytecodealliance#1088](bytecodealliance#1088)
* WIT worlds may now be rejected if the same interface can be "reached"
  as both an import and an export simultaneously.
  [bytecodealliance#1081](bytecodealliance#1081)
  [bytecodealliance#1107](bytecodealliance#1107)
* Support for registry metadata in `wasm-tools metadata`.
  [bytecodealliance#1060](bytecodealliance#1060)
* A new subcommand `wasm-tools component targets`.
  [bytecodealliance#1089](bytecodealliance#1089)
* An `--out-dir` argument is supported on `wasm-tools component wit` to
  print the entire `Resolve` instead of just one package.
  [bytecodealliance#1108](bytecodealliance#1108)
* Miscellaneous bug fixes and improvements.
  [bytecodealliance#1061](bytecodealliance#1061)
  [bytecodealliance#1065](bytecodealliance#1065)
  [bytecodealliance#1074](bytecodealliance#1074)
  [bytecodealliance#1073](bytecodealliance#1073)
  [bytecodealliance#1078](bytecodealliance#1078)
  [bytecodealliance#1077](bytecodealliance#1077)
  [bytecodealliance#1072](bytecodealliance#1072)
  [bytecodealliance#1086](bytecodealliance#1086)
  [bytecodealliance#1091](bytecodealliance#1091)
  [bytecodealliance#1094](bytecodealliance#1094)
  [bytecodealliance#1114](bytecodealliance#1114)
  [bytecodealliance#1106](bytecodealliance#1106)
alexcrichton added a commit that referenced this pull request Jul 11, 2023
Releases recent changes such as:

* More support for the gc proposal.
  [#1045](#1045)
  [#1059](#1059)
* Support for resources throughout most tooling.
  [#1053](#1053)
  [#1068](#1068)
  [#1070](#1070)
  [#1082](#1082)
  [#1079](#1079)
  [#1083](#1083)
  [#1084](#1084)
  [#1105](#1105)
  [#1113](#1113)
  [#1116](#1116)
* Support for `include` in WIT files.
  [#1054](#1054)
  [#1085](#1085)
  [#1088](#1088)
* WIT worlds may now be rejected if the same interface can be "reached"
  as both an import and an export simultaneously.
  [#1081](#1081)
  [#1107](#1107)
* Support for registry metadata in `wasm-tools metadata`.
  [#1060](#1060)
* A new subcommand `wasm-tools component targets`.
  [#1089](#1089)
* An `--out-dir` argument is supported on `wasm-tools component wit` to
  print the entire `Resolve` instead of just one package.
  [#1108](#1108)
* Miscellaneous bug fixes and improvements.
  [#1061](#1061)
  [#1065](#1065)
  [#1074](#1074)
  [#1073](#1073)
  [#1078](#1078)
  [#1077](#1077)
  [#1072](#1072)
  [#1086](#1086)
  [#1091](#1091)
  [#1094](#1094)
  [#1114](#1114)
  [#1106](#1106)
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2 participants