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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.
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