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https://issues.apache.org/jira/browse/PROTON-2772?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17775236#comment-17775236
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ASF GitHub Bot commented on PROTON-2772:
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jiridanek opened a new pull request, #407:
URL: https://github.com/apache/qpid-proton/pull/407
What's missing is a compilation failure when any warnings are emitted.
MSVC needs /analyze to report the problems, there is actually lots of
diagnostics printed then, and the mismatched format args are not causing
compilation to fail so the warnings are easy to miss.
> [c] Add parameter safety annotations for printf format strings
> --------------------------------------------------------------
>
> Key: PROTON-2772
> URL: https://issues.apache.org/jira/browse/PROTON-2772
> Project: Qpid Proton
> Issue Type: Improvement
> Components: proton-c
> Affects Versions: proton-c-0.39.0
> Reporter: Jiri Daněk
> Assignee: Jiri Daněk
> Priority: Major
> Fix For: proton-c-0.40.0
>
>
> There seem to be various mismatched printf format arguments. This is best
> resolved by annotating the string format parameters so that regular
> compilation warns on the mismatches as they happen.
> Proton already has some of this, but it is incomplete.
> {noformat}
> ```
> /home/jdanek/repos/qpid/qpid-proton/c/src/core/logger.c: In function
> ‘pni_logger_log_raw’:
> /home/jdanek/repos/qpid/qpid-proton/c/src/core/logger.c:204:41: error: format
> ‘%x’ expects argument of type ‘unsigned int’, but argument 4 has type
> ‘size_t’ {aka ‘long unsigned int’} [-Werror=format=]
> 204 | pn_fixed_string_addf(&out, "%04x/%04x: ", i, size);
> | ~~~^ ~~~~
> | | |
> | | size_t {aka long
> unsigned int}
> | unsigned int
> | %04lx
> cc1: all warnings being treated as errors
> ```
> {noformat}
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