| Subject: | Compilation warnings |
$ cc --version
Apple clang version 3.1 (tags/Apple/clang-318.0.61) (based on LLVM 3.1svn)
Target: x86_64-apple-darwin11.4.0
Thread model: posix
cc -c -I/opt/local/include/libxml2 -fno-common -DPERL_DARWIN
-fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include
-I/opt/local/include -O3 -DVERSION=\"1.99\" -DXS_VERSION=\"1.99\"
"-I/usr/local/perlbrew/perls/perl-5.16/lib/5.16.0/darwin-2level/CORE"
-DHAVE_UTF8 -DHAVE_BLANK LibXML.c
LibXML.xs:640:5: warning: expression result unused [-Wunused-value]
SvREFCNT_inc(results);
^~~~~~~~~~~~~~~~~~~~~
/usr/local/perlbrew/perls/perl-5.16/lib/5.16.0/darwin-2level/CORE/sv.h:233:2:
note:
expanded from macro 'SvREFCNT_inc'
_sv; \
^~~
LibXML.xs:8075:9: warning: expression result unused [-Wunused-value]
SvREFCNT_inc(fh); /* _dec'd by LibXML_close_perl */
^~~~~~~~~~~~~~~~
/usr/local/perlbrew/perls/perl-5.16/lib/5.16.0/darwin-2level/CORE/sv.h:233:2:
note:
expanded from macro 'SvREFCNT_inc'
_sv; \
^~~
LibXML.xs:1454:5: warning: implicit declaration of function
'boot_XML__LibXML__Devel' is invalid in C99
[-Wimplicit-function-declaration]
boot_XML__LibXML__Devel(aTHX_ cv);
^
3 warnings generated.
cc -c -I/opt/local/include/libxml2 -fno-common -DPERL_DARWIN
-fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include
-I/opt/local/include -O3 -DVERSION=\"1.99\" -DXS_VERSION=\"1.99\"
"-I/usr/local/perlbrew/perls/perl-5.16/lib/5.16.0/darwin-2level/CORE"
-DHAVE_UTF8 -DHAVE_BLANK perl-libxml-mm.c
perl-libxml-mm.c:931:12: warning: comparison of unsigned expression < 0 is
always false [-Wtautological-compare]
if (len<0) len=xmlStrlen(string);
~~~^~
1 warning generated.
cc -c -I/opt/local/include/libxml2 -fno-common -DPERL_DARWIN
-fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include
-I/opt/local/include -O3 -DVERSION=\"1.99\" -DXS_VERSION=\"1.99\"
"-I/usr/local/perlbrew/perls/perl-5.16/lib/5.16.0/darwin-2level/CORE"
-DHAVE_UTF8 -DHAVE_BLANK perl-libxml-sax.c
perl-libxml-sax.c:180:9: warning: using the result of an assignment as a
condition without parentheses [-Wparentheses]
if (p1 = buffer->head) {
~~~^~~~~~~~~~~~~~
perl-libxml-sax.c:180:9: note: place parentheses around the assignment to
silence this warning
if (p1 = buffer->head) {
^
( )
perl-libxml-sax.c:180:9: note: use '==' to turn this assignment into an
equality
comparison
if (p1 = buffer->head) {
^
==
perl-libxml-sax.c:207:9: warning: using the result of an assignment as a
condition without parentheses [-Wparentheses]
if (p1 = buffer->head) {
~~~^~~~~~~~~~~~~~
perl-libxml-sax.c:207:9: note: place parentheses around the assignment to
silence this warning
if (p1 = buffer->head) {
^
( )
perl-libxml-sax.c:207:9: note: use '==' to turn this assignment into an
equality
comparison
if (p1 = buffer->head) {
^
==
2 warnings generated.