[Bug objc/31056] New: objc bogus warning when using const

["icicle at cg dot tuwien dot ac dot at" <gcc-bugzilla at gcc dot gnu dot org>]

preprocessed source at:
http://www.cg.tuwien.ac.at/~icicle/gcc/ActionsForPolarisationImages.mi

complete output:

    .m.o: ActionsForPolarisationImages
Using built-in specs.
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-4.1.2/configure --enable-languages=c,objc
--prefix=/home/icicle/gcc4 --enable-shared --enable-threads=posix
Thread model: posix
gcc version 4.1.2
 /home/icicle/gcc4/libexec/gcc/x86_64-unknown-linux-gnu/4.1.2/cc1obj -E -quiet
-v -I/home/icicle/ART/include -DAMS_CONFIG="amd64--linux-gcc"
-D_GNU_OBJC_RUNTIME_ -DLINUX -D_64_BIT_LONG_ -DBROKEN_64BIT_VARARG_TERMINATION
-DAMS_Spectrum16 -DNORMAL -D_ART_WITHOUT_OPENGL_ -D_ART_WITHOUT_JPEGLIB_
/home/icicle/ART/Libs/Image/ActionsForPolarisationImages.m -mtune=k8 -std=gnu99
-Wall -Wwrite-strings -Wno-import -Wno-strict-aliasing -fomit-frame-pointer
-fworking-directory -O3 -fpch-preprocess -o ActionsForPolarisationImages.mi
ignoring nonexistent directory
"/home/icicle/gcc4/lib/gcc/x86_64-unknown-linux-gnu/4.1.2/../../../../x86_64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /home/icicle/ART/include
 /usr/local/include
 /home/icicle/gcc4/include
 /home/icicle/gcc4/lib/gcc/x86_64-unknown-linux-gnu/4.1.2/include
 /usr/include
End of search list.
 /home/icicle/gcc4/libexec/gcc/x86_64-unknown-linux-gnu/4.1.2/cc1obj
-fpreprocessed ActionsForPolarisationImages.mi -quiet -dumpbase
ActionsForPolarisationImages.m -mtune=k8 -auxbase-strip
./amd64--linux-gcc/Spectrum16/normal/ActionsForPolarisationImages.o -g -O3
-Wall -Wwrite-strings -Wno-import -Wno-strict-aliasing -std=gnu99 -version
-fomit-frame-pointer -o ActionsForPolarisationImages.s
GNU Objective-C version 4.1.2 (x86_64-unknown-linux-gnu)
        compiled by GNU C version 4.1.2.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 2a5baba627e461e0ff2f208acc682c91
/home/icicle/ART/Libs/Image/ActionsForPolarisationImages.m: In function
?-[ArnARTRAWLinearPolarisingFilter performOn::]?:
/home/icicle/ART/Libs/Image/ActionsForPolarisationImages.m:220: warning:
?-beginAction::? not found in protocol(s)
/home/icicle/ART/Libs/Image/ActionsForPolarisationImages.m:221: warning:
?-endAction? not found in protocol(s)
/home/icicle/ART/Libs/Image/ActionsForPolarisationImages.m: In function
?-[ArnARTRAWPolarisationFalseColour performOn::]?:
/home/icicle/ART/Libs/Image/ActionsForPolarisationImages.m:469: warning:
?-beginAction::? not found in protocol(s)
/home/icicle/ART/Libs/Image/ActionsForPolarisationImages.m:470: warning:
?-endAction? not found in protocol(s)
 as -V -Qy -o
./amd64--linux-gcc/Spectrum16/normal/ActionsForPolarisationImages.o
ActionsForPolarisationImages.s
GNU assembler version 2.16.91.0.2 (x86_64-suse-linux) using BFD version
2.16.91.0.2 20050720 (SuSE Linux)


- (void) performOn
        : (struct ArNodeTable *) nodeStack
        : (const ArExecEnv *) ee
{
    [ (*ee).reporter beginAction : 1 : "(polarising filter: non-polarising "
                                 "engine, skipped)" ];
    [ (*ee).reporter endAction ];
}

The "not found in protocol(s)" warnings are bogus, since (*ee).reporter, which
is of type "id <ArpReporter>", conforms to the ArpReporter protocol which
defines the methods beginAction and endAction.

If I change

- (void) performOn
        : (struct ArNodeTable *) nodeStack
        : (const ArExecEnv *) ee

to

- (void) performOn
        : (struct ArNodeTable *) nodeStack
        : (ArExecEnv *) ee

the warnings vanish.


-- 
           Summary: objc bogus warning when using const
           Product: gcc
           Version: 4.1.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: objc
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: icicle at cg dot tuwien dot ac dot at
 GCC build triplet: x86_64-unknown-linux-gnu
  GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31056