flag_exceptions = c_dialect_cxx ();
warn_pointer_arith = c_dialect_cxx ();
warn_write_strings = c_dialect_cxx();
+ flag_warn_unused_result = true;
/* By default, C99-like requirements for complex multiply and divide. */
flag_complex_method = 2;
/* Prevent resetting the language standard to a C dialect when the driver
has already determined that we're looking at assembler input. */
bool preprocessing_asm_p = (cpp_get_options (parse_in)->lang == CLK_ASM);
-
+
switch (code)
{
default:
case OPT_MD:
case OPT_MMD:
cpp_opts->deps.style = (code == OPT_MD ? DEPS_SYSTEM: DEPS_USER);
+ cpp_opts->deps.need_preprocessor_output = true;
deps_file = arg;
break;
headers. */
warn_unknown_pragmas = value;
- /* We save the value of warn_uninitialized, since if they put
- -Wuninitialized on the command line, we need to generate a
- warning about not using it without also specifying -O. */
- if (warn_uninitialized != 1)
- warn_uninitialized = (value ? 2 : 0);
+ warn_uninitialized = value;
if (!c_dialect_cxx ())
{
implies -Wenum-compare. */
if (warn_enum_compare == -1 && value)
warn_enum_compare = value;
+ /* Because C++ always warns about a goto which misses an
+ initialization, -Wc++-compat turns on -Wjump-misses-init. */
+ if (warn_jump_misses_init == -1 && value)
+ warn_jump_misses_init = value;
+ cpp_opts->warn_cxx_operator_names = value;
break;
case OPT_Wdeprecated:
global_dc->warning_as_error_requested = value;
break;
- case OPT_Werror_implicit_function_declaration:
+ case OPT_Werror_implicit_function_declaration:
/* For backward compatibility, this is the same as
-Werror=implicit-function-declaration. */
- enable_warning_as_error ("implicit-function-declaration", value, CL_C | CL_ObjC);
+ enable_warning_as_error ("implicit-function-declaration", value, CL_C | CL_ObjC);
break;
case OPT_Wformat:
if (flag_objc_exceptions && !flag_objc_sjlj_exceptions)
flag_exceptions = 1;
- /* -Wextra implies -Wtype-limits, -Wclobbered,
- -Wempty-body, -Wsign-compare,
- -Wmissing-field-initializers, -Wmissing-parameter-type
- -Wold-style-declaration, -Woverride-init and -Wignored-qualifiers
- but not if explicitly overridden. */
+ /* -Wextra implies the following flags
+ unless explicitly overridden. */
if (warn_type_limits == -1)
warn_type_limits = extra_warnings;
if (warn_clobbered == -1)
warn_override_init = extra_warnings;
if (warn_ignored_qualifiers == -1)
warn_ignored_qualifiers = extra_warnings;
- if (warn_logical_op == -1)
- warn_logical_op = extra_warnings;
/* -Wpointer-sign is disabled by default, but it is enabled if any
of -Wall or -pedantic are given. */
warn_strict_aliasing = 0;
if (warn_strict_overflow == -1)
warn_strict_overflow = 0;
+ if (warn_jump_misses_init == -1)
+ warn_jump_misses_init = 0;
/* -Woverlength-strings is off by default, but is enabled by -pedantic.
It is never enabled in C++, as the minimum limit is not normative
}
/* -Wimplicit-function-declaration is enabled by default for C99. */
- if (warn_implicit_function_declaration == -1)
+ if (warn_implicit_function_declaration == -1)
warn_implicit_function_declaration = flag_isoc99;
/* If we're allowing C++0x constructs, don't warn about C++0x
/* Wlong-long is disabled by default. It is enabled by:
[-pedantic | -Wtraditional] -std=[gnu|c]++98 ; or
- [-pedantic | -Wtraditional] -std=non-c99 .
+ [-pedantic | -Wtraditional] -std=non-c99 .
Either -Wlong-long or -Wno-long-long override any other settings. */
if (warn_long_long == -1)