https://gcc.gnu.org/g:c3e0fb3cd8b9af33cd3445bc500a558b818b43e5
commit r16-4413-gc3e0fb3cd8b9af33cd3445bc500a558b818b43e5 Author: Jakub Jelinek <[email protected]> Date: Tue Oct 14 11:06:08 2025 +0200 obj-c/obj-c++: Enable more options in c-family for ObjC/ObjC++ On Mon, Oct 13, 2025 at 07:07:01AM +0100, Iain Sandoe wrote: > * c.opt: Enable Wignored-attributes for Objective-C and > Objective-C++. I wrote a more complete version of this patch, here is it rebased on top of your patch. I see no reason for any of these options to be C C++ only rather than C ObjC C++ ObjC++, or in some cases C++ only rather than C++ ObjC++. The only cases where I think limiting to C only is desirable are fgimple C Var(flag_gimple) Init(0) Enable parsing GIMPLE. where I think we don't want to support ObjC for GIMPLE FE, and lang-asm C Undocumented RejectDriver For everything else I believe people adding those options just didn't think of ObjC or ObjC++. 2025-10-14 Jakub Jelinek <[email protected]> * c.opt (Wflex-array-member-not-at-end, Wignored-qualifiers, Wopenacc-parallelism, Wstrict-flex-arrays, Wsync-nand, fstrict-flex-arrays, fstrict-flex-arrays=): Enable also for ObjC and ObjC++ next to C and C++. (Wmisleading-indentation, Wopenmp-simd): Likewise. Also change LangEnabledBy from just C C++ to C ObjC C++ ObjC++. (Wplacement-new, Wplacement-new=, fcontract-assumption-mode=, fcontract-build-level=, fcontract-strict-declarations=, fcontract-mode=, fcontract-continuation-mode=, fcontract-role=, fcontract-semantic=, fcoroutines, flang-info-include-translate, flang-info-include-translate-not, flang-info-include-translate=, flang-info-module-cmi, flang-info-module-cmi=): Enable also for ObjC++ next to C++. Diff: --- gcc/c-family/c.opt | 48 ++++++++++++++++++++++++------------------------ 1 file changed, 24 insertions(+), 24 deletions(-) diff --git a/gcc/c-family/c.opt b/gcc/c-family/c.opt index a7fd14aa18db..b7ce67a5bbe5 100644 --- a/gcc/c-family/c.opt +++ b/gcc/c-family/c.opt @@ -774,7 +774,7 @@ C++ ObjC++ Var(warn_extra_semi) Init(-1) Warning Warn about semicolon after in-class function definition. Wflex-array-member-not-at-end -C C++ Var(warn_flex_array_member_not_at_end) Warning +C ObjC C++ ObjC++ Var(warn_flex_array_member_not_at_end) Warning Warn when a structure containing a C99 flexible array member as the last field is not at the end of another structure. @@ -866,7 +866,7 @@ C ObjC C++ ObjC++ Var(warn_if_not_aligned) Init(1) Warning Warn when the field in a struct is not aligned. Wignored-qualifiers -C C++ Var(warn_ignored_qualifiers) Warning EnabledBy(Wextra) +C ObjC C++ ObjC++ Var(warn_ignored_qualifiers) Warning EnabledBy(Wextra) Warn whenever type qualifiers are ignored. Wignored-attributes @@ -1013,7 +1013,7 @@ C ObjC C++ ObjC++ Var(warn_memset_transposed_args) Warning LangEnabledBy(C ObjC Warn about suspicious calls to memset where the third argument is constant literal zero and the second is not. Wmisleading-indentation -C C++ Common Var(warn_misleading_indentation) Warning LangEnabledBy(C C++,Wall) +C ObjC C++ ObjC++ Common Var(warn_misleading_indentation) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) Warn when the indentation of the code does not reflect the block structure. Wmismatched-dealloc @@ -1187,7 +1187,7 @@ C ObjC Var(warn_old_style_definition) Init(-1) Warning Warn if an old-style parameter definition is used. Wopenacc-parallelism -C C++ Var(warn_openacc_parallelism) Warning +C ObjC C++ ObjC++ Var(warn_openacc_parallelism) Warning Warn about potentially suboptimal choices related to OpenACC parallelism. Wopenmp @@ -1195,7 +1195,7 @@ C ObjC C++ ObjC++ Warning Var(warn_openmp) Init(1) Warn about suspicious OpenMP code. Wopenmp-simd -C C++ Var(warn_openmp_simd) Warning LangEnabledBy(C C++,Wall) +C ObjC C++ ObjC++ Var(warn_openmp_simd) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) Warn if a simd directive is overridden by the vectorizer cost model. Woverlength-strings @@ -1243,11 +1243,11 @@ C++ ObjC++ Var(warn_pessimizing_move) Warning LangEnabledBy(C++ ObjC++, Wall) Warn about calling std::move on a local object in a return statement preventing copy elision. Wplacement-new -C++ Warning Alias(Wplacement-new=, 1, 0) +C++ ObjC++ Warning Alias(Wplacement-new=, 1, 0) Warn for placement new expressions with undefined behavior. Wplacement-new= -C++ Joined RejectNegative UInteger Var(warn_placement_new) Init(-1) Warning IntegerRange(0, 2) +C++ ObjC++ Joined RejectNegative UInteger Var(warn_placement_new) Init(-1) Warning IntegerRange(0, 2) Warn for placement new expressions with undefined behavior. Wpmf-conversions @@ -1417,7 +1417,7 @@ C ObjC C++ ObjC++ LangEnabledBy(C ObjC C++ ObjC++,Wall, 3, 0) IntegerRange(0, 3) ; Wstrict-flex-arrays -C C++ Var(warn_strict_flex_arrays) Warning +C ObjC C++ ObjC++ Var(warn_strict_flex_arrays) Warning Warn about improper usages of flexible array members according to the level of -fstrict-flex-arrays. @@ -1495,7 +1495,7 @@ C ObjC C++ ObjC++ Var(warn_switch_outside_range) Warning Init(1) Warn about switch values that are outside of the switch's type range. Wsync-nand -C C++ Var(warn_sync_nand) Init(1) Warning +C ObjC C++ ObjC++ Var(warn_sync_nand) Init(1) Warning Warn when __sync_fetch_and_nand and __sync_nand_and_fetch built-in functions are used. Wsynth @@ -1900,35 +1900,35 @@ EnumValue Enum(on_off) String(on) Value(1) fcontract-assumption-mode= -C++ Joined RejectNegative +C++ ObjC++ Joined RejectNegative -fcontract-assumption-mode=[on|off] Enable or disable treating axiom level contracts as assumptions (default on). fcontract-build-level= -C++ Joined RejectNegative +C++ ObjC++ Joined RejectNegative -fcontract-build-level=[off|default|audit] Specify max contract level to generate runtime checks for. fcontract-strict-declarations= -C++ Var(flag_contract_strict_declarations) Enum(on_off) Joined Init(0) RejectNegative +C++ ObjC++ Var(flag_contract_strict_declarations) Enum(on_off) Joined Init(0) RejectNegative -fcontract-strict-declarations=[on|off] Enable or disable warnings on generalized redeclaration of functions with contracts (default off). fcontract-mode= -C++ Var(flag_contract_mode) Enum(on_off) Joined Init(1) RejectNegative +C++ ObjC++ Var(flag_contract_mode) Enum(on_off) Joined Init(1) RejectNegative -fcontract-mode=[on|off] Enable or disable all contract facilities (default on). fcontract-continuation-mode= -C++ Joined RejectNegative +C++ ObjC++ Joined RejectNegative -fcontract-continuation-mode=[on|off] Enable or disable contract continuation mode (default off). fcontract-role= -C++ Joined RejectNegative +C++ ObjC++ Joined RejectNegative -fcontract-role=<name>:<semantics> Specify the semantics for all levels in a role (default, review), or a custom contract role with given semantics (ex: opt:assume,assume,assume). fcontract-semantic= -C++ Joined RejectNegative +C++ ObjC++ Joined RejectNegative -fcontract-semantic=<level>:<semantic> Specify the concrete semantics for level. fcoroutines -C++ LTO Var(flag_coroutines) +C++ ObjC++ LTO Var(flag_coroutines) Enable C++ coroutines (experimental). fdebug-cpp @@ -2130,23 +2130,23 @@ C ObjC Var(warn_compare_distinct_pointer_types) Warning Init(1) Warn if pointers of distinct types are compared without a cast. flang-info-include-translate -C++ Var(note_include_translate_yes) +C++ ObjC++ Var(note_include_translate_yes) Note #include directives translated to import declarations. flang-info-include-translate-not -C++ Var(note_include_translate_no) +C++ ObjC++ Var(note_include_translate_no) Note #include directives not translated to import declarations, and not known to be textual. flang-info-include-translate= -C++ Joined RejectNegative MissingArgError(missing header name) +C++ ObjC++ Joined RejectNegative MissingArgError(missing header name) Note a #include translation of a specific header. flang-info-module-cmi -C++ Var(note_module_cmi_yes) +C++ ObjC++ Var(note_module_cmi_yes) Note Compiled Module Interface pathnames. flang-info-module-cmi= -C++ Joined RejectNegative MissingArgError(missing module name) +C++ ObjC++ Joined RejectNegative MissingArgError(missing module name) Note Compiled Module Interface pathname of a specific module or header-unit. fmax-include-depth= @@ -2357,10 +2357,10 @@ C++ ObjC++ Var(flag_sized_deallocation) Init(-1) Enable C++14 sized deallocation support. fstrict-flex-arrays -C C++ Common Alias(fstrict-flex-arrays=,3,0) +C ObjC C++ ObjC++ Common Alias(fstrict-flex-arrays=,3,0) fstrict-flex-arrays= -C C++ Common Joined RejectNegative UInteger Var(flag_strict_flex_arrays) Init(0) IntegerRange(0,3) +C ObjC C++ ObjC++ Common Joined RejectNegative UInteger Var(flag_strict_flex_arrays) Init(0) IntegerRange(0,3) -fstrict-flex-arrays=<level> Control when to treat the trailing array of a structure as a flexible array member for the purposes of accessing the elements of such an array. The default is treating all trailing arrays of structures as flexible array members. fsquangle
