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https://issues.apache.org/jira/browse/HADOOP-12560?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14997546#comment-14997546
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Alan Burlison commented on HADOOP-12560:
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I think you need to be a little careful because "integer type" doesn't
necessarily mean "C int type" but it appears both uid_t and gid_t are 32 bits
even when the app is LP64, so PRId32 seems like the right one.
> Fix sprintf warnings in {{DomainSocket.c}} introduced by HADOOP-12344
> ---------------------------------------------------------------------
>
> Key: HADOOP-12560
> URL: https://issues.apache.org/jira/browse/HADOOP-12560
> Project: Hadoop Common
> Issue Type: Bug
> Components: native
> Affects Versions: 2.8.0
> Reporter: Colin Patrick McCabe
> Assignee: Mingliang Liu
> Attachments: HADOOP-12560.000.patch
>
>
> Fix sprintf warnings in {{DomainSocket.c}} introduced by HADOOP-12344
> {code}
> [exec]
> op/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/net/unix/DomainSocket.c:488:10:
> warning: format ‘%ld’ expects argument of type ‘long int’, but argument 6
> has type ‘long long int’ [-Wformat=]
> [exec] check, path, mode, (long long)st.st_uid, (long
> long)st.st_gid, check);
> [exec] ^
> [exec]
> /pool/home/alanbur/bigdata/hadoop/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/net/unix/DomainSocket.c:488:10:
> warning: format ‘%ld’ expects argument of type ‘long int’, but argument 7
> has type ‘long long int’ [-Wformat=]
> [exec]
> /pool/home/alanbur/bigdata/hadoop/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/net/unix/DomainSocket.c:500:10:
> warning: format ‘%ld’ expects argument of type ‘long int’, but argument 6
> has type ‘long long int’ [-Wformat=]
> [exec] check, check);
> [exec] ^
> [exec]
> /pool/home/alanbur/bigdata/hadoop/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/net/unix/DomainSocket.c:500:10:
> warning: format ‘%ld’ expects argument of type ‘long int’, but argument 7
> has type ‘long long int’ [-Wformat=]
> [exec]
> /pool/home/alanbur/bigdata/hadoop/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/net/unix/DomainSocket.c:513:10:
> warning: format ‘%ld’ expects argument of type ‘long int’, but argument 6
> has type ‘long long int’ [-Wformat=]
> [exec] (long long)uid, check, (long long)uid, check);
> [exec] ^
> [exec]
> /pool/home/alanbur/bigdata/hadoop/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/net/unix/DomainSocket.c:513:10:
> warning: format ‘%ld’ expects argument of type ‘long int’, but argument 7
> has type ‘long long int’ [-Wformat=]
> [exec]
> /pool/home/alanbur/bigdata/hadoop/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/net/unix/DomainSocket.c:513:10:
> warning: format ‘%ld’ expects argument of type ‘long int’, but argument 8
> has type ‘long long int’ [-Wformat=]
> [exec]
> /pool/home/alanbur/bigdata/hadoop/hadoop-common-project/hadoop-common/src/main/native/src/org/apache/hadoop/net/unix/DomainSocket.c:513:10:
> warning: format ‘%ld’ expects argument of type ‘long int’, but argument 10
> has type ‘long long int’ [-Wformat=]
> {code}
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