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https://issues.apache.org/jira/browse/THRIFT-3831?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15538645#comment-15538645
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ASF GitHub Bot commented on THRIFT-3831:
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Github user asfgit closed the pull request at:
https://github.com/apache/thrift/pull/1085
> build of test/cpp/src/TestClient.cpp fails with newer gcc on platforms with
> unsigned char due to narrowing conversions
> ----------------------------------------------------------------------------------------------------------------------
>
> Key: THRIFT-3831
> URL: https://issues.apache.org/jira/browse/THRIFT-3831
> Project: Thrift
> Issue Type: Bug
> Components: C++ - Library
> Reporter: Cody Schafer
> Attachments: 0001-test-cpp-explicitly-use-signed-char.patch
>
>
> Specifically, we get a bunch of errors like:
> test/cpp/src/TestClient.cpp:404:15: error: narrowing conversion
> of '-1' from 'int' to 'char' inside { } [-Wnarrowing]
> gcc faq talks about this: https://gcc.gnu.org/wiki/FAQ#Wnarrowing
> I've only seen this in gcc-6, but the faq seems to indicate it could occur in
> gcc-5 as well.
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