[issue32948] clang compiler warnings on Travis

[Irit Katriel]

Irit Katriel  added the comment:

2.7-specific issue.

--
nosy: +iritkatriel
resolution:  -> out of date
stage: needs patch -> resolved
status: open -> closed

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[issue32948] clang compiler warnings on Travis

[Christian Heimes]

New submission from Christian Heimes :

I'm seeing a bunch of compile errors on 2.7 branch, 
https://travis-ci.org/python/cpython/jobs/345906584


/home/travis/build/python/cpython/Modules/_heapqmodule.c:600:21: warning: 
illegal character encoding in string literal [-Winvalid-source-encoding]
[explanation by Franois Pinard]\n\
^~~~
Include/Python.h:174:60: note: expanded from macro 'PyDoc_STRVAR'
#define PyDoc_STRVAR(name,str) PyDoc_VAR(name) = PyDoc_STR(str)
   ^
Include/Python.h:176:24: note: expanded from macro 'PyDoc_STR'
#define PyDoc_STR(str) str
   ^
1 warning generated.

clang -pthread -fno-strict-aliasing -OPT:Olimit=0 -g -O2 -g -O0 -Wall 
-Wstrict-prototypes  -I. -IInclude -I./Include   -DPy_BUILD_CORE  -c 
./Modules/pwdmodule.c -o Modules/pwdmodule.o
./Modules/posixmodule.c:363:13: warning: comparison of constant 
9223372036854775807 with expression of type 'uid_t' (aka 'unsigned int') is 
always true [-Wtautological-constant-out-of-range-compare]
if (uid <= LONG_MAX)
~~~ ^  
./Modules/posixmodule.c:371:13: warning: comparison of constant 
9223372036854775807 with expression of type 'gid_t' (aka 'unsigned int') is 
always true [-Wtautological-constant-out-of-range-compare]
if (gid <= LONG_MAX)
~~~ ^  
clang -pthread -fno-strict-aliasing -OPT:Olimit=0 -g -O2 -g -O0 -Wall 
-Wstrict-prototypes  -I. -IInclude -I./Include   -DPy_BUILD_CORE  -c 
./Modules/_sre.c -o Modules/_sre.o
clang -pthread -fno-strict-aliasing -OPT:Olimit=0 -g -O2 -g -O0 -Wall 
-Wstrict-prototypes  -I. -IInclude -I./Include   -DPy_BUILD_CORE  -c 
./Modules/_codecsmodule.c -o Modules/_codecsmodule.o
./Modules/pwdmodule.c:115:17: warning: comparison of unsigned expression < 0 is 
always false [-Wtautological-compare]
if (uid < 0)
~~~ ^ ~
1 warning generated.

/home/travis/build/python/cpython/Modules/grpmodule.c:102:17: warning: 
comparison of unsigned expression < 0 is always false [-Wtautological-compare]
if (gid < 0)
~~~ ^ ~
1 warning generated.

/cpython/Modules/nismodule.c -o 
build/temp.linux-x86_64-2.7-pydebug/home/travis/build/python/cpython/Modules/nismodule.o
/home/travis/build/python/cpython/Modules/nismodule.c:404:15: warning: 
  explicitly assigning value of variable of type 'nismaplist *' (aka
  'struct nismaplist *') to itself [-Wself-assign]
for (maps = maps; maps; maps = maps->next) {
  ^ 
1 warning generated.

/cpython/Modules/_cursesmodule.c -o 
build/temp.linux-x86_64-2.7-pydebug/home/travis/build/python/cpython/Modules/_cursesmodule.o
/home/travis/build/python/cpython/Modules/_cursesmodule.c:1082:15: warning: 
  implicit conversion from 'chtype' (aka 'unsigned long') to 'int' changes
  value from 18446744073709551615 to -1 [-Wconstant-conversion]
rtn = mvwinch(self->win,y,x);
~ ^~
/usr/include/curses.h:1247:58: note: expanded from macro 'mvwinch'
  ...(wmove((win),(y),(x)) == ERR ? NCURSES_CAST(chtype, ERR) : winch(win))
^
/usr/include/curses.h:222:34: note: expanded from macro 'NCURSES_CAST'
#define NCURSES_CAST(type,value) (type)(value)
 ^
1 warning generated.

--
components: Extension Modules
messages: 312810
nosy: christian.heimes
priority: low
severity: normal
stage: needs patch
status: open
title: clang compiler warnings on Travis
type: compile error
versions: Python 2.7

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