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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  <jakub@redhat.com>

	* 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++.
This commit is contained in:
Jakub Jelinek 2025-10-14 11:06:08 +02:00 committed by Jakub Jelinek
parent aefb2dbb64
commit c3e0fb3cd8
1 changed files with 24 additions and 24 deletions
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48
gcc/c-family/c.opt
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@ -774,7 +774,7 @@ C++ ObjC++ Var(warn_extra_semi) Init(-1) Warning
Warn about semicolon after in-class function definition. Warn about semicolon after in-class function definition.
Wflex-array-member-not-at-end 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 Warn when a structure containing a C99 flexible array member as the last
field is not at the end of another structure. 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. Warn when the field in a struct is not aligned.
Wignored-qualifiers 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. Warn whenever type qualifiers are ignored.
Wignored-attributes 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. Warn about suspicious calls to memset where the third argument is constant literal zero and the second is not.
Wmisleading-indentation 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. Warn when the indentation of the code does not reflect the block structure.
Wmismatched-dealloc 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. Warn if an old-style parameter definition is used.
Wopenacc-parallelism 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. Warn about potentially suboptimal choices related to OpenACC parallelism.
Wopenmp Wopenmp
@ -1195,7 +1195,7 @@ C ObjC C++ ObjC++ Warning Var(warn_openmp) Init(1)
Warn about suspicious OpenMP code. Warn about suspicious OpenMP code.
Wopenmp-simd 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. Warn if a simd directive is overridden by the vectorizer cost model.
Woverlength-strings 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. Warn about calling std::move on a local object in a return statement preventing copy elision.
Wplacement-new 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. Warn for placement new expressions with undefined behavior.
Wplacement-new= 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. Warn for placement new expressions with undefined behavior.
Wpmf-conversions Wpmf-conversions
@ -1417,7 +1417,7 @@ C ObjC C++ ObjC++ LangEnabledBy(C ObjC C++ ObjC++,Wall, 3, 0) IntegerRange(0, 3)
; ;
Wstrict-flex-arrays 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 Warn about improper usages of flexible array members
according to the level of -fstrict-flex-arrays. 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. Warn about switch values that are outside of the switch's type range.
Wsync-nand 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. Warn when __sync_fetch_and_nand and __sync_nand_and_fetch built-in functions are used.
Wsynth Wsynth
@ -1900,35 +1900,35 @@ EnumValue
Enum(on_off) String(on) Value(1) Enum(on_off) String(on) Value(1)
fcontract-assumption-mode= 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-assumption-mode=[on|off] Enable or disable treating axiom level contracts as assumptions (default on).
fcontract-build-level= 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-build-level=[off|default|audit] Specify max contract level to generate runtime checks for.
fcontract-strict-declarations= 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-strict-declarations=[on|off] Enable or disable warnings on generalized redeclaration of functions with contracts (default off).
fcontract-mode= 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-mode=[on|off] Enable or disable all contract facilities (default on).
fcontract-continuation-mode= fcontract-continuation-mode=
C++ Joined RejectNegative C++ ObjC++ Joined RejectNegative
-fcontract-continuation-mode=[on|off] Enable or disable contract continuation mode (default off). -fcontract-continuation-mode=[on|off] Enable or disable contract continuation mode (default off).
fcontract-role= 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-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= fcontract-semantic=
C++ Joined RejectNegative C++ ObjC++ Joined RejectNegative
-fcontract-semantic=<level>:<semantic> Specify the concrete semantics for level. -fcontract-semantic=<level>:<semantic> Specify the concrete semantics for level.
fcoroutines fcoroutines
C++ LTO Var(flag_coroutines) C++ ObjC++ LTO Var(flag_coroutines)
Enable C++ coroutines (experimental). Enable C++ coroutines (experimental).
fdebug-cpp 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. Warn if pointers of distinct types are compared without a cast.
flang-info-include-translate flang-info-include-translate
C++ Var(note_include_translate_yes) C++ ObjC++ Var(note_include_translate_yes)
Note #include directives translated to import declarations. Note #include directives translated to import declarations.
flang-info-include-translate-not 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. Note #include directives not translated to import declarations, and not known to be textual.
flang-info-include-translate= 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. Note a #include translation of a specific header.
flang-info-module-cmi flang-info-module-cmi
C++ Var(note_module_cmi_yes) C++ ObjC++ Var(note_module_cmi_yes)
Note Compiled Module Interface pathnames. Note Compiled Module Interface pathnames.
flang-info-module-cmi= 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. Note Compiled Module Interface pathname of a specific module or header-unit.
fmax-include-depth= fmax-include-depth=
@ -2357,10 +2357,10 @@ C++ ObjC++ Var(flag_sized_deallocation) Init(-1)
Enable C++14 sized deallocation support. Enable C++14 sized deallocation support.
fstrict-flex-arrays 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= 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. -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 fsquangle