fix: suppress -Wobjc-method-access warnings with forward declarations

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: mulle-nat

.gitignore

@@ -90,3 +90,4 @@ perf.data
 *.notyet
 .roam
 .graveyard
+*.tmp.*

test-compiler-runtime/cache/methodlist-walk-basic.tmp.ccerr

@@ -1,8 +1 @@
 /opt/mulle-clang-project-windows/latest/bin/x86_64-w64-mingw32-clang -O0 -g -fobjc-tao -o /home/src/srcO/mulle-objc/mulle-objc-runtime/test-compiler-runtime/cache/methodlist-walk-basic.exe methodlist-walk-basic.m -DMULLE_TEST=1 -I/home/src/srcO/mulle-objc/mulle-objc-runtime/test-compiler-runtime -I/home/nat/.mulle/var/cache/sde/mulle-objc-runtime-a98cd9f4aec5/dependency/windows/Debug/include -L/home/nat/.mulle/var/cache/sde/mulle-objc-runtime-a98cd9f4aec5/dependency/windows/Debug/lib -lmulle-objc-runtime -lmulle-core -Wl,--whole-archive -lmulle-core-all-load -lmulle-objc-runtime-startup -Wl,--no-whole-archive -lmulle-testallocator -lpsapi -lunwind -Wl,--export-all-symbols
-methodlist-walk-basic.m:4:12: warning: class 'TestClass' defined without specifying a base class [-Wobjc-root-class]
-    4 | @interface TestClass
-      |            ^
-methodlist-walk-basic.m:4:21: note: add a super class to fix this problem
-    4 | @interface TestClass
-      |                     ^
-1 warning generated.

test-compiler-runtime/category-dependencies/no-dependency.tmp.ccerr

@@ -1,8 +1 @@
 /opt/mulle-clang-project-windows/latest/bin/x86_64-w64-mingw32-clang -O0 -g -fobjc-tao -o /home/src/srcO/mulle-objc/mulle-objc-runtime/test-compiler-runtime/category-dependencies/no-dependency.exe no-dependency.m -DMULLE_TEST=1 -I/home/src/srcO/mulle-objc/mulle-objc-runtime/test-compiler-runtime -I/home/nat/.mulle/var/cache/sde/mulle-objc-runtime-a98cd9f4aec5/dependency/windows/Debug/include -L/home/nat/.mulle/var/cache/sde/mulle-objc-runtime-a98cd9f4aec5/dependency/windows/Debug/lib -lmulle-objc-runtime -lmulle-core -Wl,--whole-archive -lmulle-core-all-load -lmulle-objc-runtime-startup -Wl,--no-whole-archive -lmulle-testallocator -lpsapi -lunwind -Wl,--export-all-symbols
-no-dependency.m:8:12: warning: class 'A' defined without specifying a base class [-Wobjc-root-class]
-    8 | @interface A
-      |            ^
-no-dependency.m:8:13: note: add a super class to fix this problem
-    8 | @interface A
-      |             ^
-1 warning generated.

test-compiler-runtime/category-dependencies/no-dependency.tmp.stderr

@@ -1 +1 @@
-mulle_objc_universe 0x6ffffc3ab158 error: category "A( Cat2)" overrides method 9f37ed7a "foo" of category "A( Cat1)" in class "A" but does not implement +dependencies
+mulle_objc_universe 0x6ffffc5db158 error: category "A( Cat2)" overrides method 9f37ed7a "foo" of category "A( Cat1)" in class "A" but does not implement +dependencies

test-compiler-runtime/category-dependencies/proper-dependency.tmp.ccerr

@@ -1,8 +1 @@
 /opt/mulle-clang-project-windows/latest/bin/x86_64-w64-mingw32-clang -O0 -g -fobjc-tao -o /home/src/srcO/mulle-objc/mulle-objc-runtime/test-compiler-runtime/category-dependencies/proper-dependency.exe proper-dependency.m -DMULLE_TEST=1 -I/home/src/srcO/mulle-objc/mulle-objc-runtime/test-compiler-runtime -I/home/nat/.mulle/var/cache/sde/mulle-objc-runtime-a98cd9f4aec5/dependency/windows/Debug/include -L/home/nat/.mulle/var/cache/sde/mulle-objc-runtime-a98cd9f4aec5/dependency/windows/Debug/lib -lmulle-objc-runtime -lmulle-core -Wl,--whole-archive -lmulle-core-all-load -lmulle-objc-runtime-startup -Wl,--no-whole-archive -lmulle-testallocator -lpsapi -lunwind -Wl,--export-all-symbols
-proper-dependency.m:8:12: warning: class 'A' defined without specifying a base class [-Wobjc-root-class]
-    8 | @interface A
-      |            ^
-proper-dependency.m:8:13: note: add a super class to fix this problem
-    8 | @interface A
-      |             ^
-1 warning generated.

test-compiler-runtime/category-dependencies/three-category-chain.tmp.ccerr

@@ -1,8 +1 @@
 /opt/mulle-clang-project-windows/latest/bin/x86_64-w64-mingw32-clang -O0 -g -fobjc-tao -o /home/src/srcO/mulle-objc/mulle-objc-runtime/test-compiler-runtime/category-dependencies/three-category-chain.exe three-category-chain.m -DMULLE_TEST=1 -I/home/src/srcO/mulle-objc/mulle-objc-runtime/test-compiler-runtime -I/home/nat/.mulle/var/cache/sde/mulle-objc-runtime-a98cd9f4aec5/dependency/windows/Debug/include -L/home/nat/.mulle/var/cache/sde/mulle-objc-runtime-a98cd9f4aec5/dependency/windows/Debug/lib -lmulle-objc-runtime -lmulle-core -Wl,--whole-archive -lmulle-core-all-load -lmulle-objc-runtime-startup -Wl,--no-whole-archive -lmulle-testallocator -lpsapi -lunwind -Wl,--export-all-symbols
-three-category-chain.m:8:12: warning: class 'A' defined without specifying a base class [-Wobjc-root-class]
-    8 | @interface A
-      |            ^
-three-category-chain.m:8:13: note: add a super class to fix this problem
-    8 | @interface A
-      |             ^
-1 warning generated.

test-compiler-runtime/category-dependencies/wrong-dependency.tmp.ccerr

@@ -1,8 +1 @@
 /opt/mulle-clang-project-windows/latest/bin/x86_64-w64-mingw32-clang -O0 -g -fobjc-tao -o /home/src/srcO/mulle-objc/mulle-objc-runtime/test-compiler-runtime/category-dependencies/wrong-dependency.exe wrong-dependency.m -DMULLE_TEST=1 -I/home/src/srcO/mulle-objc/mulle-objc-runtime/test-compiler-runtime -I/home/nat/.mulle/var/cache/sde/mulle-objc-runtime-a98cd9f4aec5/dependency/windows/Debug/include -L/home/nat/.mulle/var/cache/sde/mulle-objc-runtime-a98cd9f4aec5/dependency/windows/Debug/lib -lmulle-objc-runtime -lmulle-core -Wl,--whole-archive -lmulle-core-all-load -lmulle-objc-runtime-startup -Wl,--no-whole-archive -lmulle-testallocator -lpsapi -lunwind -Wl,--export-all-symbols
-wrong-dependency.m:8:12: warning: class 'A' defined without specifying a base class [-Wobjc-root-class]
-    8 | @interface A
-      |            ^
-wrong-dependency.m:8:13: note: add a super class to fix this problem
-    8 | @interface A
-      |             ^
-1 warning generated.

test-compiler-runtime/category-dependencies/wrong-dependency.tmp.stderr

@@ -1 +1 @@
-mulle_objc_universe 0x6ffffc3ab158 error: category "A( Cat2)" overrides method 9f37ed7a "foo" of category "A( Cat1)" in class "A" but +dependencies does not list { 40bf6ccc, f597522d }
+mulle_objc_universe 0x6ffffc5db158 error: category "A( Cat2)" overrides method 9f37ed7a "foo" of category "A( Cat1)" in class "A" but +dependencies does not list { 40bf6ccc, f597522d }

test-compiler-runtime/class/class-reuse.tmp.ccerr

@@ -1,8 +1 @@
 /opt/mulle-clang-project-windows/latest/bin/x86_64-w64-mingw32-clang -O0 -g -fobjc-tao -o /home/src/srcO/mulle-objc/mulle-objc-runtime/test-compiler-runtime/class/class-reuse.exe class-reuse.m -DMULLE_TEST=1 -I/home/src/srcO/mulle-objc/mulle-objc-runtime/test-compiler-runtime -I/home/nat/.mulle/var/cache/sde/mulle-objc-runtime-a98cd9f4aec5/dependency/windows/Debug/include -L/home/nat/.mulle/var/cache/sde/mulle-objc-runtime-a98cd9f4aec5/dependency/windows/Debug/lib -lmulle-objc-runtime -lmulle-core -Wl,--whole-archive -lmulle-core-all-load -lmulle-objc-runtime-startup -Wl,--no-whole-archive -lmulle-testallocator -lpsapi -lunwind -Wl,--export-all-symbols
-class-reuse.m:4:12: warning: class 'Bar' defined without specifying a base class [-Wobjc-root-class]
-    4 | @interface Bar
-      |            ^
-class-reuse.m:4:15: note: add a super class to fix this problem
-    4 | @interface Bar
-      |               ^
-1 warning generated.

test-compiler-runtime/class/class-reuse.tmp.stderr

@@ -1,2 +1,2 @@
 Infraclass reuses allocs
-elapsed: 18.242s
+elapsed: 18.454s