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https://issues.apache.org/jira/browse/ARROW-12640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17338592#comment-17338592
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Antoine Pitrou commented on ARROW-12640:
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Can you try adding the following lines somewhere in {{src/parquet/types.h}}:

{code:c++}
#ifdef OPTIONAL
#undef OPTIONAL
#endif
{code}

> [C++] VS 2019 reports syntax errors in cpp/src/parquet/types.h
> --------------------------------------------------------------
>
>                 Key: ARROW-12640
>                 URL: https://issues.apache.org/jira/browse/ARROW-12640
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++
>            Reporter: Ian Cook
>            Priority: Major
>
> On April 30, a nightly CI job that builds libarrow with Visual Studio 2019 
> ({{test-build-vcpkg-win}}) started failing because of numerous syntax errors:
> {code:java}
> D:\a\crossbow\crossbow\arrow\cpp\src\parquet/types.h(115,38): error C2143: 
> syntax error: missing '}' before '=' 
> [D:\a\crossbow\crossbow\arrow\cpp\build\src\arrow\dataset\arrow_dataset_shared.vcxproj]
> 4423D:\a\crossbow\crossbow\arrow\cpp\src\parquet/types.h(115,38): error 
> C2059: syntax error: '=' 
> [D:\a\crossbow\crossbow\arrow\cpp\build\src\arrow\dataset\arrow_dataset_shared.vcxproj]
> 4424D:\a\crossbow\crossbow\arrow\cpp\src\parquet/types.h(115,87): error 
> C2143: syntax error: missing ';' before '}' 
> [D:\a\crossbow\crossbow\arrow\cpp\build\src\arrow\dataset\arrow_dataset_shared.vcxproj]
> 4425D:\a\crossbow\crossbow\arrow\cpp\src\parquet/types.h(115,87): error 
> C2238: unexpected token(s) preceding ';' 
> [D:\a\crossbow\crossbow\arrow\cpp\build\src\arrow\dataset\arrow_dataset_shared.vcxproj]
> 4426D:\a\crossbow\crossbow\arrow\cpp\src\parquet/types.h(173,22): error 
> C2039: 'schema': is not a member of 'parquet' 
> [D:\a\crossbow\crossbow\arrow\cpp\build\src\arrow\dataset\arrow_dataset_shared.vcxproj]
> 4427D:\a\crossbow\crossbow\arrow\cpp\src\parquet/types.h(40): message : see 
> declaration of 'parquet' 
> [D:\a\crossbow\crossbow\arrow\cpp\build\src\arrow\dataset\arrow_dataset_shared.vcxproj]
> 4428D:\a\crossbow\crossbow\arrow\cpp\src\parquet/types.h(173,22): error 
> C3083: 'schema': the symbol to the left of a '::' must be a type 
> [D:\a\crossbow\crossbow\arrow\cpp\build\src\arrow\dataset\arrow_dataset_shared.vcxproj]
> 4429D:\a\crossbow\crossbow\arrow\cpp\src\parquet/types.h(173,30): error 
> C2039: 'DecimalMetadata': is not a member of 'parquet' {code}
> See full log at 
> [https://github.com/ursacomputing/crossbow/runs/2473230854#step:4:4422]
> [~bkietz] [~davidli] I am almost certain that this was caused by ARROW-11929
> PR: [https://github.com/apache/arrow/pull/10166]
> Commit: 
> [https://github.com/apache/arrow/commit/7430bbdfcda5d23cf18d7222da8419eb594d9f3f]
> When I check out the commit immediately before this one, the build succeeds 
> without these errors. When I check out this commit, the build shows these 
> errors.
> I believe the issue is not directly related to vcpkg. It happens also when I 
> use conda for dependencies. It seems to be related to Visual Studio 2019.



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