New submission from Jeremy Kloth:

It would seem that enabling GCC's type conversion/truncation warnings would be 
a good thing for Python builds.

This would bring GCC builds in line with MSVC builds and reduce the burden on 
the Windows developers in fixing them.  Also, it would bring attention to those 
issues by the developer who writes code and would hopefully understand the 
truncation issues at hand.

The CFLAGS required for this are '-Wconversion -Wno-sign-conversion'.

I unfortunately do not know the autoconf foo needed to implement this 
suggestion, however.  Perhaps it should only be enabled for debug builds as 
well to eliminate excess noise for other builds.  Or at least enabled on some 
of the buildbots.

----------
components: Build
messages: 166851
nosy: jkloth
priority: normal
severity: normal
status: open
title: enable type truncation warnings for gcc builds
type: enhancement
versions: Python 3.3, Python 3.4

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue15495>
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