[New-bugs-announce] [issue11450] Py_GetBuildInfo() truncates when there are many hg tags

Scott Dial report at bugs.python.org
Wed Mar 9 09:10:17 CET 2011

New submission from Scott Dial <scott at scottdial.com>:

I'm not sure if it's intended to be a supported workflow, but I personally have come to like using "mq" for projects where I am an outsider submitting small changes as patches. However, this appears to be a broken workflow due to way getbuildinfo module choose to limit the buildinfo string to 50 characters:

$ hg qnew dummy-patch
$ echo "/* dummy change */" >> Modules/getbuildinfo.c
$ ./python -c 'import sys; print(sys.version)' 
3.3a0 (dummy-patch qbase qtip tip:191f047a07b4+, Mar  9 ) 
[GCC 4.4.5]

This breaks the platform module and therefore breaks the regrtest code, which makes it a show-stopper for using mq to manage your workflow. Is there any reason that length of buildinfo can't be chosen at compile-time based on the sizeof(HGTAG)?

components: Build
messages: 130432
nosy: scott.dial
priority: normal
severity: normal
status: open
title: Py_GetBuildInfo() truncates when there are many hg tags
type: feature request

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