[Python-Dev] 2.3.3 Compilation warnings... (original) (raw)

Guido van Rossum guido at python.org
Sat Dec 27 17:39:47 EST 2003

I don't know what the policy on compilation warnings are with the development of Python, but I'd imagine that it's "no warnings".

Right, if possible.

I get the following warnings:

gcc -pthread -c -fno-strict-aliasing -DNDEBUG -g -O3 -Wall -Wstrict-prototypes - I. -I./Include -DPyBUILDCORE -o Python/errors.o Python/errors.c Python/errors.c:602: warning: function declaration isn't a prototype _gcc -pthread -Xlinker -export-dynamic -o python _ _Modules/python.o _ libpython2.3.a -lpthread -ldl -lutil -lm libpython2.3.a(posixmodule.o): In function posixtmpnam':_ _/usr/local/src/Python-2.3.3/./Modules/posixmodule.c:5833: the use of tmpnamr' is dangerous, better use mkstemp'_ _libpython2.3.a(posixmodule.o): In function posixtempnam': /usr/local/src/Python-2.3.3/./Modules/posixmodule.c:5788: the use of tempnam'_ _is dangerous, better use mkstemp'

Note that this is the linker speaking, not the compiler. The only way to get rid of this warning is not to use those two entry points, which means removing the functions os.tempnam() and os.tmpnam(). That will eventually happy. These functions have been deprecated already, but for backwards compatibility, we need to provide them for a few more releases. In the mean time, I don't know how to tell the linker to suppress the warnings.

building 'readline' extension gcc -pthread -DNDEBUG -g -O3 -Wall -Wstrict-prototypes -fPIC -fno-strict-aliasin g -I. -I/usr/local/src/Python-2.3.3/./Include -I/usr/local/include -I/usr/local/ src/Python-2.3.3/Include -I/usr/local/src/Python-2.3.3 -c /usr/local/src/Python-2.3.3/Modules/readline.c -o build/temp.linux-i686-2.3/readline.o /usr/local/src/Python-2.3.3/Modules/readline.c: In function flexcomplete':_ _/usr/local/src/Python-2.3.3/Modules/readline.c:583: warning: implicit_ _declaration of function completionmatches' /usr/local/src/Python-2.3.3/Modules/readline.c:583: warning: return makes pointer from integer without a cast

This seems a case of a missing function declaration in readline.h. Unfortunately being compatible with all versions of GNU readline that are around is very tricky. If you have a patch, I'd consider it, but it would have to be tested on a number of different platforms before being accepted. I don't have the time to do all the verification myself.

--Guido van Rossum (home page: http://www.python.org/~guido/)

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