The gcc and g++ of trunk (svn r133789) has a problem with detecting faulty
warnings such was -Wno-this-does-not-exist.
E.g. it seems to pass on -Wno-long-double options down to, like with:
int main()
{
return 0;
}
DOES NOT fail with gcc -c -g -Wno-long-double main.c
but DOES fail with gcc -c -g -Wno-long-double -Wstrict-prototypes main.c
main.c:2: warning: function declaration isn't a prototype
cc1: error: unrecognized command line option "-Wno-long-double"
This however works again, if -Wstrict-prototype does not trigger again:
[EMAIL PROTECTED]:~/C> cat main.c
int main (void)
{
return 0;
}
[EMAIL PROTECTED]:~/C> gcc -c -g -Wno-long-double -Wstrict-prototypes main.c
[EMAIL PROTECTED]:~/C>
This triggers, e.g. in configure-scripts, that try to detect warnings such as
-Wno-long-double: Succeeding at first, they fail every test in compilation
later on.
--
Summary: Compiler does not recognize faulty warnings starting
with -Wno-
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: Keller at hlrs dot de
GCC build triplet: i586-suse-linux-gnu
GCC host triplet: i586-suse-linux-gnu
GCC target triplet: i586-suse-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35797
