"Шумоподавляющие" флаги компилятора Clang.

clang-silent-flags.md

Clang command line argument reference — Clang 9 documentation

-w, --no-warnings

Suppress all warnings

Compilation flags

Diagnostic flags

-W, --extra-warnings, --warn-, --warn-=	Enable the specified warning
-Wdeprecated, -Wno-deprecated	Enable warnings for deprecated constructs and define __DEPRECATED

Diagnostic flags in Clang — Clang 9 documentation

Diagnostic flags

-W

Synonym for -Wextra.

-Wall

Some of the diagnostics controlled by this flag are enabled by default.

Controls

• -Wmost,
• -Wparentheses,
• -Wswitch,
• -Wswitch-bool.

-Wextra

Some of the diagnostics controlled by this flag are enabled by default.

Also controls

• -Wempty-init-stmt,
• -Wignored-qualifiers,
• -Winitializer-overrides,
• -Wmissing-field-initializers,
• -Wmissing-method-return-type,
• -Wnull-pointer-arithmetic,
• -Wsemicolon-before-method-body,
• -Wsign-compare,
• -Wunused-parameter.

Diagnostic text:

warning: call to function without interrupt attribute could clobber interruptee’s VFP registers

Clang Compiler User’s Manual — Clang 9 documentation

Command Line Options

Options to Control Error and Warning Messages

-Werror	Turn warnings into errors.
-Werror=foo	Turn warning “foo” into an error.
-Wno-error=foo	Turn warning “foo” into a warning even if -Werror is specified.
-Wfoo	Enable warning “foo”. See the diagnostics reference for a complete list of the warning flags that can be specified in this way.
-Wno-foo	Disable warning “foo”.
-w	Disable all diagnostics.
-Weverything	Enable all diagnostics.

clang-cl

Command-Line Options

/Wall	Enable -Weverything