invoke.texi: Document more C++ command-line options.
* invoke.texi: Document more C++ command-line options. Remove support for -Wextern-inline, -flabels-ok, -fvtable-gc, -fxref * cp-tree.h (warn_extern_inline): Remove. (flag_labels_ok): Likewise. * decl2.c (warn_extern_inline): Remove. (flag_labels_ok): Likewise. (lang_f_options): Remove labels-ok, vtable-gc, xref. (unsupported_options): Add them. (cxx_decode_option): Don't accept -Wextern-inline. * method.c (hack_identifier): Remove -flabels-ok support. * spew.c (see_typename): Likewise. * g++.dg/vtgc1.C: XFAIL. * g++.old-deja/g++.other/crash18.C: Likewise. From-SVN: r41609
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Mark Mitchell
parent
56fe39c809
commit
fcca588c94
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@ -1064,10 +1064,6 @@ extern int warn_ecpp;
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extern int warn_sign_promo;
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/* Non-zero means warn when a function is declared extern and later inline. */
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extern int warn_extern_inline;
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/* Non-zero means warn when an old-style cast is used. */
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extern int warn_old_style_cast;
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@ -3180,10 +3176,6 @@ typedef enum instantiate_type_flags {
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itf_ptrmem_ok = 1 << 2, /* pointers to member ok (internal use) */
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} instantiate_type_flags;
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/* Non-zero means that if a label exists, and no other identifier
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applies, use the value of the label. */
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extern int flag_labels_ok;
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/* Nonzero means allow Microsoft extensions without a pedwarn. */
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extern int flag_ms_extensions;
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@ -273,10 +273,6 @@ int warn_overloaded_virtual;
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int warn_nonvdtor;
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/* Non-zero means warn when a function is declared extern and later inline. */
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int warn_extern_inline;
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/* Non-zero means warn when the compiler will reorder code. */
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int warn_reorder;
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@ -327,10 +323,6 @@ int warn_deprecated = 1;
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#endif
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int dollars_in_ident = DOLLARS_IN_IDENTIFIERS;
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/* Nonzero means that labels can be used as first-class objects */
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int flag_labels_ok;
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/* Nonzero means allow Microsoft extensions without a pedwarn. */
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int flag_ms_extensions;
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@ -473,7 +465,6 @@ lang_f_options[] =
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{"implement-inlines", &flag_implement_inlines, 1},
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{"implicit-inline-templates", &flag_implicit_inline_templates, 1},
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{"implicit-templates", &flag_implicit_templates, 1},
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{"labels-ok", &flag_labels_ok, 1},
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{"ms-extensions", &flag_ms_extensions, 1},
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{"nonansi-builtins", &flag_no_nonansi_builtin, 0},
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{"operator-names", &flag_operator_names, 1},
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@ -483,10 +474,8 @@ lang_f_options[] =
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{"rtti", &flag_rtti, 1},
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{"stats", &flag_detailed_statistics, 1},
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{"use-cxa-atexit", &flag_use_cxa_atexit, 1},
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{"vtable-gc", &flag_vtable_gc, 1},
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{"vtable-thunks", &flag_vtable_thunks, 1},
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{"weak", &flag_weak, 1},
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{"xref", &flag_gnu_xref, 1}
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{"weak", &flag_weak, 1}
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};
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/* The list of `-f' options that we no longer support. The `-f'
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@ -497,10 +486,13 @@ static const char * const unsupported_options[] = {
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"cond-mismatch",
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"enum-int-equiv",
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"guiding-decls",
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"labels-ok",
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"nonnull-objects",
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"squangle",
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"strict-prototype",
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"this-is-variable",
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"vtable-gc",
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"xref"
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};
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/* Compare two option strings, pointed two by P1 and P2, for use with
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@ -701,8 +693,6 @@ cxx_decode_option (argc, argv)
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warn_parentheses = setting;
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else if (!strcmp (p, "non-virtual-dtor"))
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warn_nonvdtor = setting;
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else if (!strcmp (p, "extern-inline"))
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warn_extern_inline = setting;
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else if (!strcmp (p, "reorder"))
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warn_reorder = setting;
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else if (!strcmp (p, "synth"))
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@ -182,10 +182,6 @@ hack_identifier (value, name)
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#endif
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}
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}
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if (flag_labels_ok && IDENTIFIER_LABEL_VALUE (name))
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{
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return IDENTIFIER_LABEL_VALUE (name);
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}
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return error_mark_node;
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}
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@ -701,12 +701,7 @@ see_typename ()
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if (yychar == IDENTIFIER)
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{
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lastiddecl = lookup_name (yylval.ttype, -2);
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if (lastiddecl == 0)
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{
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if (flag_labels_ok)
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lastiddecl = IDENTIFIER_LABEL_VALUE (yylval.ttype);
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}
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else
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if (lastiddecl)
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yychar = identifier_type (lastiddecl);
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}
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}
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@ -1232,6 +1232,17 @@ two definitions were merged.
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This option is no longer useful on most targets, now that support has
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been added for putting variables into BSS without making them common.
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@item -fno-const-strings
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Give string constants type @code{char *} instead of type @code{const
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char *}. By default, G++ uses type @code{const char *} as required by
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the standard. Even if you use @samp{-fno-const-strings}, you cannot
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actually modify the value of a string constant, unless you also use
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@samp{-fwritable-strings}.
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This option might be removed in a future release of G++. For maximum
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portability, you should structure your code so that it works with
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string constants that have type @code{const char *}.
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@item -fdollars-in-identifiers
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Accept @samp{$} in identifiers. You can also explicitly prohibit use of
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@samp{$} with the option @samp{-fno-dollars-in-identifiers}. (GNU C allows
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@ -1321,6 +1332,11 @@ errors if these functions are not inlined everywhere they are called.
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Disable pedantic warnings about constructs used in MFC, such as implicit
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int and getting a pointer to member function via non-standard syntax.
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@item -fno-nonansi-builtins
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Disable builtin declarations of functions that are not mandated by
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ANSI/ISO C. These include @code{ffs}, @code{alloca}, @code{_exit},
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@code{index}, @code{bzero}, @code{conjf}, and other related functions.
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@item -fno-operator-names
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Do not treat the operator name keywords @code{and}, @code{bitand},
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@code{bitor}, @code{compl}, @code{not}, @code{or} and @code{xor} as
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@ -1350,6 +1366,10 @@ of the language, you can save some space by using this flag. Note that
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exception handling uses the same information, but it will generate it as
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needed.
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@item -fstats
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Emit statistics about front-end processing at the end of the compilation.
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This information is generally only useful to the G++ development team.
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@item -ftemplate-depth-@var{n}
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Set the maximum instantiation depth for template classes to @var{n}.
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A limit on the template instantiation depth is needed to detect
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@ -1379,6 +1399,13 @@ those.
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Like all options that change the ABI, all C++ code, @emph{including
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libgcc.a} must be built with the same setting of this option.
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@item -fno-weak
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Do not use weak symbol support, even if it is provied by the linker.
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By default, G++ will use weak symbols if they are available. This
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option exists only for testing, and should not be used by end-users;
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it will result in inferior code and has no benefits. This option may
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be removed in a future release of G++.
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@item -nostdinc++
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Do not search for header files in the standard directories specific to
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C++, but do still search the other standard directories. (This option
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@ -1,5 +1,6 @@
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// { dg-do compile }
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// { dg-options "-fvtable-gc" }
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// { dg-excess-errors "-fvtable-gc unsupported" { xfail *-*-* } }
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// Origin: Hans-Peter Nilsson <hp@bitrange.com>
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class Base0
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@ -118,16 +119,29 @@ void x3 (Multivs1 *ii) { ii->f2();}
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void x4 (Multiss2 *ii) { ii->f2();}
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void x5 (Multivv3 *ii) { ii->f2();}
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// { dg-final { setup_xfail *-*-* } }
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// { dg-final { scan-assembler-dem vtgc1.C "\.vtable_inherit\[ \t\]*vtable for Multivv3, 0" } }
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// { dg-final { setup_xfail *-*-* } }
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// { dg-final { scan-assembler-dem vtgc1.C "\.vtable_inherit\[ \t\]*VTT for Multivv3, 0" } }
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// { dg-final { setup_xfail *-*-* } }
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// { dg-final { scan-assembler-dem vtgc1.C "\.vtable_inherit\[ \t\]*vtable for Multiss2, vtable for Base2" } }
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// { dg-final { setup_xfail *-*-* } }
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// { dg-final { scan-assembler-dem vtgc1.C "\.vtable_inherit\[ \t\]*vtable for Multivs1, vtable for Base2" } }
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// { dg-final { setup_xfail *-*-* } }
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// { dg-final { scan-assembler-dem vtgc1.C "\.vtable_inherit\[ \t\]*VTT for Multivs1, vtable for Base2" } }
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// { dg-final { setup_xfail *-*-* } }
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// { dg-final { scan-assembler-dem vtgc1.C "\.vtable_inherit\[ \t\]*vtable for Multisv0, vtable for Side0" } }
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// { dg-final { setup_xfail *-*-* } }
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// { dg-final { scan-assembler-dem vtgc1.C "\.vtable_inherit\[ \t\]*VTT for Multisv0, vtable for Side0" } }
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// { dg-final { setup_xfail *-*-* } }
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// { dg-final { scan-assembler-dem vtgc1.C "\.vtable_inherit\[ \t\]*vtable for Side0, 0" } }
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// { dg-final { setup_xfail *-*-* } }
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// { dg-final { scan-assembler-dem vtgc1.C "\.vtable_inherit\[ \t\]*vtable for VbasedA, 0" } }
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// { dg-final { setup_xfail *-*-* } }
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// { dg-final { scan-assembler-dem vtgc1.C "\.vtable_inherit\[ \t\]*VTT for VbasedA, 0" } }
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// { dg-final { setup_xfail *-*-* } }
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// { dg-final { scan-assembler-dem vtgc1.C "\.vtable_inherit\[ \t\]*vtable for Base2, vtable for Base1" } }
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// { dg-final { setup_xfail *-*-* } }
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// { dg-final { scan-assembler-dem vtgc1.C "\.vtable_inherit\[ \t\]*vtable for Base1, vtable for Base0" } }
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// { dg-final { setup_xfail *-*-* } }
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// { dg-final { scan-assembler-dem vtgc1.C "\.vtable_inherit\[ \t\]*vtable for Base0, 0" } }
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@ -1,7 +1,7 @@
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// Build don't link:
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// Special g++ Options: -fvtable-gc
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// Origin: Mark Mitchell <mitchell@codesourcery.com>
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// excess errors test - XFAIL *-*-coff *-*-aout *-*-hms mips*-sgi-irix*
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// excess errors test - XFAIL *-*-*
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struct S {
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virtual void f ();
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