[Python-checkins] cpython: Issue #22110: Enable extra compilation warnings.
charles-francois.natali
python-checkins at python.org
Fri Aug 1 22:58:25 CEST 2014
http://hg.python.org/cpython/rev/2c70897e5f98
changeset: 91958:2c70897e5f98
user: Charles-François Natali <cf.natali at gmail.com>
date: Fri Aug 01 21:57:49 2014 +0100
summary:
Issue #22110: Enable extra compilation warnings.
files:
configure | 88 ++++++++++++++++++++++++++++++++++++++++
configure.ac | 46 ++++++++++++++++++++
2 files changed, 134 insertions(+), 0 deletions(-)
diff --git a/configure b/configure
--- a/configure
+++ b/configure
@@ -6510,6 +6510,94 @@
BASECFLAGS="$BASECFLAGS -Werror=declaration-after-statement"
fi
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can turn on $CC mixed sign comparison warning" >&5
+$as_echo_n "checking if we can turn on $CC mixed sign comparison warning... " >&6; }
+ ac_save_cc="$CC"
+ CC="$CC -Wsign-compare"
+ save_CFLAGS="$CFLAGS"
+ if ${ac_cv_enable_sign_compare_warning+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ ac_cv_enable_sign_compare_warning=yes
+
+else
+
+ ac_cv_enable_sign_compare_warning=no
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+
+ CFLAGS="$save_CFLAGS"
+ CC="$ac_save_cc"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_enable_sign_compare_warning" >&5
+$as_echo "$ac_cv_enable_sign_compare_warning" >&6; }
+
+ if test $ac_cv_enable_sign_compare_warning = yes
+ then
+ BASECFLAGS="$BASECFLAGS -Wsign-compare"
+ fi
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can turn on $CC unreachable code warning" >&5
+$as_echo_n "checking if we can turn on $CC unreachable code warning... " >&6; }
+ ac_save_cc="$CC"
+ CC="$CC -Wunreachable-code"
+ save_CFLAGS="$CFLAGS"
+ if ${ac_cv_enable_unreachable_code_warning+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+ ac_cv_enable_unreachable_code_warning=yes
+
+else
+
+ ac_cv_enable_unreachable_code_warning=no
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+
+ CFLAGS="$save_CFLAGS"
+ CC="$ac_save_cc"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_enable_unreachable_code_warning" >&5
+$as_echo "$ac_cv_enable_unreachable_code_warning" >&6; }
+
+ # Don't enable unreachable code warning in debug mode, since it usually
+ # results in non-standard code paths.
+ if test $ac_cv_enable_unreachable_code_warning = yes && test "$Py_DEBUG" != "true"
+ then
+ BASECFLAGS="$BASECFLAGS -Wunreachable-code"
+ fi
+
# if using gcc on alpha, use -mieee to get (near) full IEEE 754
# support. Without this, treatment of subnormals doesn't follow
# the standard.
diff --git a/configure.ac b/configure.ac
--- a/configure.ac
+++ b/configure.ac
@@ -1234,6 +1234,52 @@
BASECFLAGS="$BASECFLAGS -Werror=declaration-after-statement"
fi
+ AC_MSG_CHECKING(if we can turn on $CC mixed sign comparison warning)
+ ac_save_cc="$CC"
+ CC="$CC -Wsign-compare"
+ save_CFLAGS="$CFLAGS"
+ AC_CACHE_VAL(ac_cv_enable_sign_compare_warning,
+ AC_COMPILE_IFELSE(
+ [
+ AC_LANG_PROGRAM([[]], [[]])
+ ],[
+ ac_cv_enable_sign_compare_warning=yes
+ ],[
+ ac_cv_enable_sign_compare_warning=no
+ ]))
+ CFLAGS="$save_CFLAGS"
+ CC="$ac_save_cc"
+ AC_MSG_RESULT($ac_cv_enable_sign_compare_warning)
+
+ if test $ac_cv_enable_sign_compare_warning = yes
+ then
+ BASECFLAGS="$BASECFLAGS -Wsign-compare"
+ fi
+
+ AC_MSG_CHECKING(if we can turn on $CC unreachable code warning)
+ ac_save_cc="$CC"
+ CC="$CC -Wunreachable-code"
+ save_CFLAGS="$CFLAGS"
+ AC_CACHE_VAL(ac_cv_enable_unreachable_code_warning,
+ AC_COMPILE_IFELSE(
+ [
+ AC_LANG_PROGRAM([[]], [[]])
+ ],[
+ ac_cv_enable_unreachable_code_warning=yes
+ ],[
+ ac_cv_enable_unreachable_code_warning=no
+ ]))
+ CFLAGS="$save_CFLAGS"
+ CC="$ac_save_cc"
+ AC_MSG_RESULT($ac_cv_enable_unreachable_code_warning)
+
+ # Don't enable unreachable code warning in debug mode, since it usually
+ # results in non-standard code paths.
+ if test $ac_cv_enable_unreachable_code_warning = yes && test "$Py_DEBUG" != "true"
+ then
+ BASECFLAGS="$BASECFLAGS -Wunreachable-code"
+ fi
+
# if using gcc on alpha, use -mieee to get (near) full IEEE 754
# support. Without this, treatment of subnormals doesn't follow
# the standard.
--
Repository URL: http://hg.python.org/cpython
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