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Use -Wlogical-op on gcc 4.5 or higher

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It exposed one bug for us (see 8c3452bcb294e07888), and might
prevent more.
This commit is contained in:
Nick Mathewson 2010-05-18 14:05:01 -04:00
parent 8c3452bcb2
commit d14bb926b4
1 changed files with 9 additions and 0 deletions
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9
configure.in
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@ -565,6 +565,11 @@ if test x$enable_gcc_warnings = xyes; then
#error #error
#endif]), have_gcc42=yes, have_gcc42=no) #endif]), have_gcc42=yes, have_gcc42=no)
AC_COMPILE_IFELSE(AC_LANG_PROGRAM([], [
#if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
#error
#endif]), have_gcc45=yes, have_gcc45=no)
CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat -Wwrite-strings -Wmissing-declarations -Wredundant-decls -Wnested-externs -Wbad-function-cast -Wswitch-enum -Werror" CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat -Wwrite-strings -Wmissing-declarations -Wredundant-decls -Wnested-externs -Wbad-function-cast -Wswitch-enum -Werror"
CFLAGS="$CFLAGS -Wno-unused-parameter -Wno-sign-compare -Wstrict-aliasing" CFLAGS="$CFLAGS -Wno-unused-parameter -Wno-sign-compare -Wstrict-aliasing"
@ -579,6 +584,10 @@ if test x$enable_gcc_warnings = xyes; then
CFLAGS="$CFLAGS -Waddress -Wnormalized=id -Woverride-init" CFLAGS="$CFLAGS -Waddress -Wnormalized=id -Woverride-init"
fi fi
if test x$have_gcc45 = xyes ; then
# These warnings work on gcc 4.5
CFLAGS="$CFLAGS -Wlogical-op"
fi
##This will break the world on some 64-bit architectures ##This will break the world on some 64-bit architectures
# CFLAGS="$CFLAGS -Winline" # CFLAGS="$CFLAGS -Winline"