On 14.06.2012 12:45, Stefan Fuhrmann wrote: > On 06/12/2012 02:35 PM, Philip Martin wrote: >> Branko Čibej<br...@apache.org> writes: >> >>> Better than spamming #svn-dev, here's the current list of 64-32bit >>> narrowing warnings I get on my 64-bit mac wit Xcode 4.3.3's gcc. Taking >>> a quick look at these, every case appears to be a valid warning that >>> needs to be looked at and verified that the narrowing doesn't affect >>> the >>> value. >>> >>> i don't know why these warnings don't show up on Linux and/or with >>> newer >>> versions of GCC. >> They show up if one uses -Wconversion (on my 64 bit Linux platform) but >> they are swaped by other warnings so it is not enabled by default. For >> example this file: >> >>> subversion/libsvn_subr/cache-membuffer.c: In function >>> 'svn_cache__membuffer_cache_create': >>> subversion/libsvn_subr/cache-membuffer.c:1078: warning: implicit >>> conversion shortens 64-bit value into a 32-bit value >> has these warnings with -Wconversion -Wno-sign-conversion on 64 bit > > Good to know these switches.
And in the Mac OS build we use -Wshorten-64-to-32, which appears to be an apple-gcc-specific switch that doesn't produce as much crud in the output. -- Brane
