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toplev.h: Add comment about the first parameter for warning(). 

* toplev.h: Add comment about the first parameter for warning().
* errors.h: Likewise.

* c.opt (Wpragmas): New.
* doc/invoke.texi: Document it.

* function.c (do_warn_unused_parameter): Add warning control to
warning call.
* c-decl.c (warn_if_shadowing): Likewise.
* c-lex.c (cb_def_pragma): Likewise.
* c-pragma.c (GCC_BAD, GCC_BAD2): Likewise.
(pop_alignment): Likewise.
(handle_pragma_pack): Likewise.
(apply_pragma_weak): Likewise.
(handle_pragma_weak): Likewise.
(handle_pragma_redefine_extname): Likewise.
(add_to_renaming_pragma_list): Likewise.
(handle_pragma_extern_prefix): Likewise.
(maybe_apply_renaming_pragma): Likewise.
(handle_pragma_visibility): Likewise.

* config/c4x/c4x-c.c (BAD): Likewise.
(c4x_parse_pragma): Likewise.
* config/ia64/ia64-c.c (ia64_hpux_handle_builtin_pragma): Likewise.
* config/rs6000/rs6000-c.c (SYNTAX_ERROR): Likewise.
(rs6000_pragma_longcall): Likewise.
* config/v850/v850-c.c (pop_data_area): Likewise.
(ghs_pragma_section): Likewise.
(ghs_pragma_section): Likewise.
(ghs_pragma_interrupt): Likewise.
(ghs_pragma_starttda): Likewise.
(ghs_pragma_startsda): Likewise.
(ghs_pragma_startzda): Likewise.
(ghs_pragma_endtda): Likewise.
(ghs_pragma_endsda): Likewise.
(ghs_pragma_endzda): Likewise.

From-SVN: r102168
This commit is contained in:
DJ Delorie 2005-07-19 16:19:16 -04:00 committed by DJ Delorie
parent 24d36d28c4
commit b9b8dde302
13 changed files with 109 additions and 48 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
gcc/ChangeLog
View File

@ -1,3 +1,42 @@
2005-07-15 DJ Delorie <dj@redhat.com>
* toplev.h: Add comment about the first parameter for warning().
* errors.h: Likewise.
* c.opt (Wpragmas): New.
* doc/invoke.texi: Document it.
* function.c (do_warn_unused_parameter): Add warning control to
warning call.
* c-decl.c (warn_if_shadowing): Likewise.
* c-lex.c (cb_def_pragma): Likewise.
* c-pragma.c (GCC_BAD, GCC_BAD2): Likewise.
(pop_alignment): Likewise.
(handle_pragma_pack): Likewise.
(apply_pragma_weak): Likewise.
(handle_pragma_weak): Likewise.
(handle_pragma_redefine_extname): Likewise.
(add_to_renaming_pragma_list): Likewise.
(handle_pragma_extern_prefix): Likewise.
(maybe_apply_renaming_pragma): Likewise.
(handle_pragma_visibility): Likewise.
* config/c4x/c4x-c.c (BAD): Likewise.
(c4x_parse_pragma): Likewise.
* config/ia64/ia64-c.c (ia64_hpux_handle_builtin_pragma): Likewise.
* config/rs6000/rs6000-c.c (SYNTAX_ERROR): Likewise.
(rs6000_pragma_longcall): Likewise.
* config/v850/v850-c.c (pop_data_area): Likewise.
(ghs_pragma_section): Likewise.
(ghs_pragma_section): Likewise.
(ghs_pragma_interrupt): Likewise.
(ghs_pragma_starttda): Likewise.
(ghs_pragma_startsda): Likewise.
(ghs_pragma_startzda): Likewise.
(ghs_pragma_endtda): Likewise.
(ghs_pragma_endsda): Likewise.
(ghs_pragma_endzda): Likewise.
2005-07-19 Danny Berlin <dberlin@dberlin.org> 2005-07-19 Danny Berlin <dberlin@dberlin.org>
Kenneth Zadeck <zadeck@naturalbridge.com> Kenneth Zadeck <zadeck@naturalbridge.com>

19
gcc/c-decl.c
View File

@ -1908,27 +1908,28 @@ warn_if_shadowing (tree new_decl)
if (old_decl == error_mark_node) if (old_decl == error_mark_node)
{ {
warning (0, "declaration of %q+D shadows previous non-variable", warning (OPT_Wshadow, "declaration of %q+D shadows previous "
new_decl); "non-variable", new_decl);
break; break;
} }
else if (TREE_CODE (old_decl) == PARM_DECL) else if (TREE_CODE (old_decl) == PARM_DECL)
warning (0, "declaration of %q+D shadows a parameter", new_decl); warning (OPT_Wshadow, "declaration of %q+D shadows a parameter",
else if (DECL_FILE_SCOPE_P (old_decl))
warning (0, "declaration of %q+D shadows a global declaration",
new_decl); new_decl);
else if (DECL_FILE_SCOPE_P (old_decl))
warning (OPT_Wshadow, "declaration of %q+D shadows a global "
"declaration", new_decl);
else if (TREE_CODE (old_decl) == FUNCTION_DECL else if (TREE_CODE (old_decl) == FUNCTION_DECL
&& DECL_BUILT_IN (old_decl)) && DECL_BUILT_IN (old_decl))
{ {
warning (0, "declaration of %q+D shadows a built-in function", warning (OPT_Wshadow, "declaration of %q+D shadows "
new_decl); "a built-in function", new_decl);
break; break;
} }
else else
warning (0, "declaration of %q+D shadows a previous local", warning (OPT_Wshadow, "declaration of %q+D shadows a previous local",
new_decl); new_decl);
warning (0, "%Jshadowed declaration is here", old_decl); warning (OPT_Wshadow, "%Jshadowed declaration is here", old_decl);
break; break;
} }

3
gcc/c-lex.c
View File

@ -299,7 +299,8 @@ cb_def_pragma (cpp_reader *pfile, source_location loc)
name = cpp_token_as_text (pfile, s); name = cpp_token_as_text (pfile, s);
} }
warning (0, "%Hignoring #pragma %s %s", &fe_loc, space, name); warning (OPT_Wunknown_pragmas, "%Hignoring #pragma %s %s",
&fe_loc, space, name);
} }
} }

35
gcc/c-pragma.c
View File

@ -37,9 +37,10 @@ Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
#include "vec.h" #include "vec.h"
#include "target.h" #include "target.h"
#define GCC_BAD(gmsgid) do { warning (0, gmsgid); return; } while (0) #define GCC_BAD(gmsgid) \
do { warning (OPT_Wpragmas, gmsgid); return; } while (0)
#define GCC_BAD2(gmsgid, arg) \ #define GCC_BAD2(gmsgid, arg) \
do { warning (0, gmsgid, arg); return; } while (0) do { warning (OPT_Wpragmas, gmsgid, arg); return; } while (0)
typedef struct align_stack GTY(()) typedef struct align_stack GTY(())
{ {
@ -110,7 +111,7 @@ pop_alignment (tree id)
break; break;
} }
if (entry == NULL) if (entry == NULL)
warning (0, "\ warning (OPT_Wpragmas, "\
#pragma pack(pop, %s) encountered without matching #pragma pack(push, %s)" #pragma pack(pop, %s) encountered without matching #pragma pack(push, %s)"
, IDENTIFIER_POINTER (id), IDENTIFIER_POINTER (id)); , IDENTIFIER_POINTER (id), IDENTIFIER_POINTER (id));
} }
@ -203,7 +204,7 @@ handle_pragma_pack (cpp_reader * ARG_UNUSED (dummy))
GCC_BAD ("malformed %<#pragma pack%> - ignored"); GCC_BAD ("malformed %<#pragma pack%> - ignored");
if (c_lex (&x) != CPP_EOF) if (c_lex (&x) != CPP_EOF)
warning (0, "junk at end of %<#pragma pack%>"); warning (OPT_Wpragmas, "junk at end of %<#pragma pack%>");
if (flag_pack_struct) if (flag_pack_struct)
GCC_BAD ("#pragma pack has no effect with -fpack-struct - ignored"); GCC_BAD ("#pragma pack has no effect with -fpack-struct - ignored");
@ -259,8 +260,8 @@ apply_pragma_weak (tree decl, tree value)
if (SUPPORTS_WEAK && DECL_EXTERNAL (decl) && TREE_USED (decl) if (SUPPORTS_WEAK && DECL_EXTERNAL (decl) && TREE_USED (decl)
&& !DECL_WEAK (decl) /* Don't complain about a redundant #pragma. */ && !DECL_WEAK (decl) /* Don't complain about a redundant #pragma. */
&& TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) && TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
warning (0, "applying #pragma weak %q+D after first use results " warning (OPT_Wpragmas, "applying #pragma weak %q+D after first use "
"in unspecified behavior", decl); "results in unspecified behavior", decl);
declare_weak (decl); declare_weak (decl);
} }
@ -342,7 +343,7 @@ handle_pragma_weak (cpp_reader * ARG_UNUSED (dummy))
t = c_lex (&x); t = c_lex (&x);
} }
if (t != CPP_EOF) if (t != CPP_EOF)
warning (0, "junk at end of #pragma weak"); warning (OPT_Wpragmas, "junk at end of #pragma weak");
decl = identifier_global_value (name); decl = identifier_global_value (name);
if (decl && DECL_P (decl)) if (decl && DECL_P (decl))
@ -415,7 +416,7 @@ handle_pragma_redefine_extname (cpp_reader * ARG_UNUSED (dummy))
GCC_BAD ("malformed #pragma redefine_extname, ignored"); GCC_BAD ("malformed #pragma redefine_extname, ignored");
t = c_lex (&x); t = c_lex (&x);
if (t != CPP_EOF) if (t != CPP_EOF)
warning (0, "junk at end of #pragma redefine_extname"); warning (OPT_Wpragmas, "junk at end of #pragma redefine_extname");
if (!flag_mudflap && !targetm.handle_pragma_redefine_extname) if (!flag_mudflap && !targetm.handle_pragma_redefine_extname)
{ {
@ -438,8 +439,8 @@ handle_pragma_redefine_extname (cpp_reader * ARG_UNUSED (dummy))
name = targetm.strip_name_encoding (name); name = targetm.strip_name_encoding (name);
if (strcmp (name, IDENTIFIER_POINTER (newname))) if (strcmp (name, IDENTIFIER_POINTER (newname)))
warning (0, "#pragma redefine_extname ignored due to conflict with " warning (OPT_Wpragmas, "#pragma redefine_extname ignored due to "
"previous rename"); "conflict with previous rename");
} }
else else
change_decl_assembler_name (decl, newname); change_decl_assembler_name (decl, newname);
@ -461,8 +462,8 @@ add_to_renaming_pragma_list (tree oldname, tree newname)
if (previous) if (previous)
{ {
if (TREE_VALUE (previous) != newname) if (TREE_VALUE (previous) != newname)
warning (0, "#pragma redefine_extname ignored due to conflict with " warning (OPT_Wpragmas, "#pragma redefine_extname ignored due to "
"previous #pragma redefine_extname"); "conflict with previous #pragma redefine_extname");
return; return;
} }
@ -483,7 +484,7 @@ handle_pragma_extern_prefix (cpp_reader * ARG_UNUSED (dummy))
GCC_BAD ("malformed #pragma extern_prefix, ignored"); GCC_BAD ("malformed #pragma extern_prefix, ignored");
t = c_lex (&x); t = c_lex (&x);
if (t != CPP_EOF) if (t != CPP_EOF)
warning (0, "junk at end of #pragma extern_prefix"); warning (OPT_Wpragmas, "junk at end of #pragma extern_prefix");
if (targetm.handle_pragma_extern_prefix) if (targetm.handle_pragma_extern_prefix)
/* Note that the length includes the null terminator. */ /* Note that the length includes the null terminator. */
@ -516,7 +517,7 @@ maybe_apply_renaming_pragma (tree decl, tree asmname)
oldname = targetm.strip_name_encoding (oldname); oldname = targetm.strip_name_encoding (oldname);
if (asmname && strcmp (TREE_STRING_POINTER (asmname), oldname)) if (asmname && strcmp (TREE_STRING_POINTER (asmname), oldname))
warning (0, "asm declaration ignored due to " warning (OPT_Wpragmas, "asm declaration ignored due to "
"conflict with previous rename"); "conflict with previous rename");
/* Take any pending redefine_extname off the list. */ /* Take any pending redefine_extname off the list. */
@ -525,7 +526,7 @@ maybe_apply_renaming_pragma (tree decl, tree asmname)
{ {
/* Only warn if there is a conflict. */ /* Only warn if there is a conflict. */
if (strcmp (IDENTIFIER_POINTER (TREE_VALUE (t)), oldname)) if (strcmp (IDENTIFIER_POINTER (TREE_VALUE (t)), oldname))
warning (0, "#pragma redefine_extname ignored due to " warning (OPT_Wpragmas, "#pragma redefine_extname ignored due to "
"conflict with previous rename"); "conflict with previous rename");
*p = TREE_CHAIN (t); *p = TREE_CHAIN (t);
@ -547,7 +548,7 @@ maybe_apply_renaming_pragma (tree decl, tree asmname)
{ {
if (strcmp (TREE_STRING_POINTER (asmname), if (strcmp (TREE_STRING_POINTER (asmname),
IDENTIFIER_POINTER (newname)) != 0) IDENTIFIER_POINTER (newname)) != 0)
warning (0, "#pragma redefine_extname ignored due to " warning (OPT_Wpragmas, "#pragma redefine_extname ignored due to "
"conflict with __asm__ declaration"); "conflict with __asm__ declaration");
return asmname; return asmname;
} }
@ -661,7 +662,7 @@ handle_pragma_visibility (cpp_reader *dummy ATTRIBUTE_UNUSED)
} }
} }
if (c_lex (&x) != CPP_EOF) if (c_lex (&x) != CPP_EOF)
warning (0, "junk at end of %<#pragma GCC visibility%>"); warning (OPT_Wpragmas, "junk at end of %<#pragma GCC visibility%>");
} }
#endif #endif

4
gcc/c.opt
View File

@ -331,6 +331,10 @@ Wpointer-to-int-cast
C ObjC Var(warn_pointer_to_int_cast) Init(1) C ObjC Var(warn_pointer_to_int_cast) Init(1)
Warn when a pointer is cast to an integer of a different size Warn when a pointer is cast to an integer of a different size
Wpragmas
C ObjC C++ ObjC++ Var(warn_pragmas) Init(1)
Warn about misuses of pragmas
Wprotocol Wprotocol
ObjC ObjC++ Var(warn_protocol) Init(1) ObjC ObjC++ Var(warn_protocol) Init(1)
Warn if inherited methods are unimplemented Warn if inherited methods are unimplemented

5
gcc/config/c4x/c4x-c.c
View File

@ -57,7 +57,8 @@ static int c4x_parse_pragma (const char *, tree *, tree *);
the STRING_CST node of the string. If SECT is null, then this the STRING_CST node of the string. If SECT is null, then this
pragma doesn't take a section string. Returns 0 for a good pragma, pragma doesn't take a section string. Returns 0 for a good pragma,
-1 for a malformed pragma. */ -1 for a malformed pragma. */
#define BAD(gmsgid, arg) do { warning (0, gmsgid, arg); return -1; } while (0) #define BAD(gmsgid, arg) \
do { warning (OPT_Wpragmas, gmsgid, arg); return -1; } while (0)
static int static int
c4x_parse_pragma (name, func, sect) c4x_parse_pragma (name, func, sect)
@ -86,7 +87,7 @@ c4x_parse_pragma (name, func, sect)
BAD ("missing ')' for '#pragma %s' - ignored", name); BAD ("missing ')' for '#pragma %s' - ignored", name);
if (c_lex (&x) != CPP_EOF) if (c_lex (&x) != CPP_EOF)
warning (0, "junk at end of '#pragma %s'", name); warning (OPT_Wpragmas, "junk at end of '#pragma %s'", name);
*func = f; *func = f;
return 0; return 0;

2
gcc/config/ia64/ia64-c.c
View File

@ -49,7 +49,7 @@ ia64_hpux_handle_builtin_pragma (cpp_reader *pfile ATTRIBUTE_UNUSED)
type = c_lex (&x); type = c_lex (&x);
} }
if (type != CPP_EOF) if (type != CPP_EOF)
warning (0, "malformed #pragma builtin"); warning (OPT_Wpragmas, "malformed #pragma builtin");
} }
/* List of standard math functions which do not set matherr by default /* List of standard math functions which do not set matherr by default

6
gcc/config/rs6000/rs6000-c.c
View File

@ -51,8 +51,8 @@ static tree altivec_resolve_overloaded_builtin (tree, tree);
attribute by default. */ attribute by default. */
#define SYNTAX_ERROR(gmsgid) do { \ #define SYNTAX_ERROR(gmsgid) do { \
warning (0, gmsgid); \ warning (OPT_Wpragmas, gmsgid); \
warning (0, "ignoring malformed #pragma longcall"); \ warning (OPT_Wpragmas, "ignoring malformed #pragma longcall"); \
return; \ return; \
} while (0) } while (0)
@ -75,7 +75,7 @@ rs6000_pragma_longcall (cpp_reader *pfile ATTRIBUTE_UNUSED)
SYNTAX_ERROR ("number must be 0 or 1"); SYNTAX_ERROR ("number must be 0 or 1");
if (c_lex (&x) != CPP_EOF) if (c_lex (&x) != CPP_EOF)
warning (0, "junk at end of #pragma longcall"); warning (OPT_Wpragmas, "junk at end of #pragma longcall");
rs6000_default_long_calls = (n == integer_one_node); rs6000_default_long_calls = (n == integer_one_node);
} }

24
gcc/config/v850/v850-c.c
View File

@ -64,9 +64,11 @@ static int
pop_data_area (v850_data_area data_area) pop_data_area (v850_data_area data_area)
{ {
if (data_area_stack == NULL) if (data_area_stack == NULL)
warning (0, "#pragma GHS endXXXX found without previous startXXX"); warning (OPT_Wpragmas, "#pragma GHS endXXXX found without "
"previous startXXX");
else if (data_area != data_area_stack->data_area) else if (data_area != data_area_stack->data_area)
warning (0, "#pragma GHS endXXX does not match previous startXXX"); warning (OPT_Wpragmas, "#pragma GHS endXXX does not match "
"previous startXXX");
else else
{ {
data_area_stack_element * elem; data_area_stack_element * elem;
@ -144,7 +146,7 @@ ghs_pragma_section (cpp_reader * pfile ATTRIBUTE_UNUSED)
if (type == CPP_COMMA) if (type == CPP_COMMA)
repeat = 1; repeat = 1;
else if (type != CPP_EOF) else if (type != CPP_EOF)
warning (0, "junk at end of #pragma ghs section"); warning (OPT_Wpragmas, "junk at end of #pragma ghs section");
if (streq (sect, "data")) kind = GHS_SECTION_KIND_DATA; if (streq (sect, "data")) kind = GHS_SECTION_KIND_DATA;
else if (streq (sect, "text")) kind = GHS_SECTION_KIND_TEXT; else if (streq (sect, "text")) kind = GHS_SECTION_KIND_TEXT;
@ -176,7 +178,7 @@ ghs_pragma_section (cpp_reader * pfile ATTRIBUTE_UNUSED)
return; return;
bad: bad:
warning (0, "malformed #pragma ghs section"); warning (OPT_Wpragmas, "malformed #pragma ghs section");
return; return;
reset: reset:
@ -195,7 +197,7 @@ ghs_pragma_interrupt (cpp_reader * pfile ATTRIBUTE_UNUSED)
tree x; tree x;
if (c_lex (&x) != CPP_EOF) if (c_lex (&x) != CPP_EOF)
warning (0, "junk at end of #pragma ghs interrupt"); warning (OPT_Wpragmas, "junk at end of #pragma ghs interrupt");
mark_current_function_as_interrupt (); mark_current_function_as_interrupt ();
} }
@ -206,7 +208,7 @@ ghs_pragma_starttda (cpp_reader * pfile ATTRIBUTE_UNUSED)
tree x; tree x;
if (c_lex (&x) != CPP_EOF) if (c_lex (&x) != CPP_EOF)
warning (0, "junk at end of #pragma ghs starttda"); warning (OPT_Wpragmas, "junk at end of #pragma ghs starttda");
push_data_area (DATA_AREA_TDA); push_data_area (DATA_AREA_TDA);
} }
@ -217,7 +219,7 @@ ghs_pragma_startsda (cpp_reader * pfile ATTRIBUTE_UNUSED)
tree x; tree x;
if (c_lex (&x) != CPP_EOF) if (c_lex (&x) != CPP_EOF)
warning (0, "junk at end of #pragma ghs startsda"); warning (OPT_Wpragmas, "junk at end of #pragma ghs startsda");
push_data_area (DATA_AREA_SDA); push_data_area (DATA_AREA_SDA);
} }
@ -228,7 +230,7 @@ ghs_pragma_startzda (cpp_reader * pfile ATTRIBUTE_UNUSED)
tree x; tree x;
if (c_lex (&x) != CPP_EOF) if (c_lex (&x) != CPP_EOF)
warning (0, "junk at end of #pragma ghs startzda"); warning (OPT_Wpragmas, "junk at end of #pragma ghs startzda");
push_data_area (DATA_AREA_ZDA); push_data_area (DATA_AREA_ZDA);
} }
@ -239,7 +241,7 @@ ghs_pragma_endtda (cpp_reader * pfile ATTRIBUTE_UNUSED)
tree x; tree x;
if (c_lex (&x) != CPP_EOF) if (c_lex (&x) != CPP_EOF)
warning (0, "junk at end of #pragma ghs endtda"); warning (OPT_Wpragmas, "junk at end of #pragma ghs endtda");
pop_data_area (DATA_AREA_TDA); pop_data_area (DATA_AREA_TDA);
} }
@ -250,7 +252,7 @@ ghs_pragma_endsda (cpp_reader * pfile ATTRIBUTE_UNUSED)
tree x; tree x;
if (c_lex (&x) != CPP_EOF) if (c_lex (&x) != CPP_EOF)
warning (0, "junk at end of #pragma ghs endsda"); warning (OPT_Wpragmas, "junk at end of #pragma ghs endsda");
pop_data_area (DATA_AREA_SDA); pop_data_area (DATA_AREA_SDA);
} }
@ -261,7 +263,7 @@ ghs_pragma_endzda (cpp_reader * pfile ATTRIBUTE_UNUSED)
tree x; tree x;
if (c_lex (&x) != CPP_EOF) if (c_lex (&x) != CPP_EOF)
warning (0, "junk at end of #pragma ghs endzda"); warning (OPT_Wpragmas, "junk at end of #pragma ghs endzda");
pop_data_area (DATA_AREA_ZDA); pop_data_area (DATA_AREA_ZDA);
} }

9
gcc/doc/invoke.texi
View File

@ -241,7 +241,7 @@ Objective-C and Objective-C++ Dialects}.
-Wsign-compare -Wstrict-aliasing -Wstrict-aliasing=2 @gol -Wsign-compare -Wstrict-aliasing -Wstrict-aliasing=2 @gol
-Wswitch -Wswitch-default -Wswitch-enum @gol -Wswitch -Wswitch-default -Wswitch-enum @gol
-Wsystem-headers -Wtrigraphs -Wundef -Wuninitialized @gol -Wsystem-headers -Wtrigraphs -Wundef -Wuninitialized @gol
-Wunknown-pragmas -Wunreachable-code @gol -Wunknown-pragmas -Wno-pragmas -Wunreachable-code @gol
-Wunused -Wunused-function -Wunused-label -Wunused-parameter @gol -Wunused -Wunused-function -Wunused-label -Wunused-parameter @gol
-Wunused-value -Wunused-variable -Wwrite-strings @gol -Wunused-value -Wunused-variable -Wwrite-strings @gol
-Wvariadic-macros} -Wvariadic-macros}
@ -2709,6 +2709,13 @@ GCC@. If this command line option is used, warnings will even be issued
for unknown pragmas in system header files. This is not the case if for unknown pragmas in system header files. This is not the case if
the warnings were only enabled by the @option{-Wall} command line option. the warnings were only enabled by the @option{-Wall} command line option.
@item -Wno-pragmas
@opindex Wno-pragmas
@opindex Wpragmas
Do not warn about misuses of pragmas, such as incorrect parameters,
invalid syntax, or conflicts between pragmas. See also
@samp{-Wunknown-pragmas}.
@item -Wstrict-aliasing @item -Wstrict-aliasing
@opindex Wstrict-aliasing @opindex Wstrict-aliasing
This option is only active when @option{-fstrict-aliasing} is active. This option is only active when @option{-fstrict-aliasing} is active.

4
gcc/errors.h
View File

@ -30,6 +30,10 @@ Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
#ifndef GCC_ERRORS_H #ifndef GCC_ERRORS_H
#define GCC_ERRORS_H #define GCC_ERRORS_H
/* The first parameter is for compatibility with the non-generator
version of warning(). For those, you'd pass an OPT_W* value from
options.h, but in generator programs it has no effect, so it's OK
to just pass zero for calls from generator-only files. */
extern void warning (int, const char *, ...) ATTRIBUTE_PRINTF_2; extern void warning (int, const char *, ...) ATTRIBUTE_PRINTF_2;
extern void error (const char *, ...) ATTRIBUTE_PRINTF_1; extern void error (const char *, ...) ATTRIBUTE_PRINTF_1;
extern void fatal (const char *, ...) ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF_1; extern void fatal (const char *, ...) ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF_1;

2
gcc/function.c
View File

@ -4315,7 +4315,7 @@ do_warn_unused_parameter (tree fn)
decl; decl = TREE_CHAIN (decl)) decl; decl = TREE_CHAIN (decl))
if (!TREE_USED (decl) && TREE_CODE (decl) == PARM_DECL if (!TREE_USED (decl) && TREE_CODE (decl) == PARM_DECL
&& DECL_NAME (decl) && !DECL_ARTIFICIAL (decl)) && DECL_NAME (decl) && !DECL_ARTIFICIAL (decl))
warning (0, "unused parameter %q+D", decl); warning (OPT_Wunused_parameter, "unused parameter %q+D", decl);
} }
static GTY(()) rtx initial_trampoline; static GTY(()) rtx initial_trampoline;

1
gcc/toplev.h
View File

@ -57,6 +57,7 @@ extern void _fatal_insn (const char *, rtx, const char *, int, const char *)
extern void internal_error (const char *, ...) ATTRIBUTE_GCC_DIAG(1,2) extern void internal_error (const char *, ...) ATTRIBUTE_GCC_DIAG(1,2)
ATTRIBUTE_NORETURN; ATTRIBUTE_NORETURN;
extern void warning0 (const char *, ...) ATTRIBUTE_GCC_DIAG(1,2); extern void warning0 (const char *, ...) ATTRIBUTE_GCC_DIAG(1,2);
/* Pass one of the OPT_W* from options.h as the first parameter. */
extern void warning (int, const char *, ...) ATTRIBUTE_GCC_DIAG(2,3); extern void warning (int, const char *, ...) ATTRIBUTE_GCC_DIAG(2,3);
extern void error (const char *, ...) ATTRIBUTE_GCC_DIAG(1,2); extern void error (const char *, ...) ATTRIBUTE_GCC_DIAG(1,2);
extern void fatal_error (const char *, ...) ATTRIBUTE_GCC_DIAG(1,2) extern void fatal_error (const char *, ...) ATTRIBUTE_GCC_DIAG(1,2)