PR debug/43058

[pf3gnuchains/gcc-fork.git] / gcc / system.h

diff --git a/gcc/system.h b/gcc/system.h
index a488292..e764e58 100644 (file)
--- a/gcc/system.h
+++ b/gcc/system.h
@@ -1,13 +1,14 @@
 /* Get common system includes and various definitions and declarations based
    on autoconf macros.
 /* Get common system includes and various definitions and declarations based
    on autoconf macros.

-   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
+   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008,
+   2009

    Free Software Foundation, Inc.
 
 This file is part of GCC.
 
 GCC is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free
    Free Software Foundation, Inc.
 
 This file is part of GCC.
 
 GCC is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free

-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later

 version.
 
 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
 version.
 
 GCC is distributed in the hope that it will be useful, but WITHOUT ANY


@@ -16,9 +17,8 @@ FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 for more details.
 
 You should have received a copy of the GNU General Public License
 for more details.
 
 You should have received a copy of the GNU General Public License

-along with GCC; see the file COPYING.  If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA.  */
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */

 
 
 #ifndef GCC_SYSTEM_H
 
 
 #ifndef GCC_SYSTEM_H


@@ -47,6 +47,9 @@ Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
 #endif
 
 /* Use the unlocked open routines from libiberty.  */
 #endif
 
 /* Use the unlocked open routines from libiberty.  */

+#ifdef fopen /* fopen is a #define on VMS.  */
+#undef fopen
+#endif

 #define fopen(PATH,MODE) fopen_unlocked(PATH,MODE)
 #define fdopen(FILDES,MODE) fdopen_unlocked(FILDES,MODE)
 #define freopen(PATH,MODE,STREAM) freopen_unlocked(PATH,MODE,STREAM)
 #define fopen(PATH,MODE) fopen_unlocked(PATH,MODE)
 #define fdopen(FILDES,MODE) fdopen_unlocked(FILDES,MODE)
 #define freopen(PATH,MODE,STREAM) freopen_unlocked(PATH,MODE,STREAM)


@@ -227,6 +230,8 @@ extern int errno;
 # endif
 #endif
 
 # endif
 #endif
 

+#define ICE_EXIT_CODE 4
+

 #ifdef HAVE_UNISTD_H
 # include <unistd.h>
 #endif
 #ifdef HAVE_UNISTD_H
 # include <unistd.h>
 #endif


@@ -252,7 +257,8 @@ extern int errno;
    UPPER.  However the bounds themselves can be either positive or
    negative.  */
 #define IN_RANGE(VALUE, LOWER, UPPER) \
    UPPER.  However the bounds themselves can be either positive or
    negative.  */
 #define IN_RANGE(VALUE, LOWER, UPPER) \

-  ((unsigned HOST_WIDE_INT)((VALUE) - (LOWER)) <= ((UPPER) - (LOWER)))
+  ((unsigned HOST_WIDE_INT) (VALUE) - (unsigned HOST_WIDE_INT) (LOWER) \
+   <= (unsigned HOST_WIDE_INT) (UPPER) - (unsigned HOST_WIDE_INT) (LOWER))

 
 /* Infrastructure for defining missing _MAX and _MIN macros.  Note that
    macros defined with these cannot be used in #if.  */
 
 /* Infrastructure for defining missing _MAX and _MIN macros.  Note that
    macros defined with these cannot be used in #if.  */


@@ -408,6 +414,14 @@ extern void *calloc (size_t, size_t);
 extern void *realloc (void *, size_t);
 #endif
 
 extern void *realloc (void *, size_t);
 #endif
 

+#ifdef HAVE_STDINT_H
+#include <stdint.h>
+#endif
+
+#ifdef HAVE_INTTYPES_H
+#include <inttypes.h>
+#endif
+

 /* If the system doesn't provide strsignal, we get it defined in
    libiberty but no declaration is supplied.  */
 #if !defined (HAVE_STRSIGNAL) \
 /* If the system doesn't provide strsignal, we get it defined in
    libiberty but no declaration is supplied.  */
 #if !defined (HAVE_STRSIGNAL) \


@@ -450,7 +464,8 @@ extern int vsnprintf(char *, size_t, const char *, va_list);
 /* 1 if we have C99 designated initializers.  */
 #if !defined(HAVE_DESIGNATED_INITIALIZERS)
 #define HAVE_DESIGNATED_INITIALIZERS \
 /* 1 if we have C99 designated initializers.  */
 #if !defined(HAVE_DESIGNATED_INITIALIZERS)
 #define HAVE_DESIGNATED_INITIALIZERS \

-  ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
+  (((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)) \
+   && !defined(__cplusplus))

 #endif
 
 #if HAVE_SYS_STAT_H
 #endif
 
 #if HAVE_SYS_STAT_H


@@ -513,15 +528,7 @@ extern int vsnprintf(char *, size_t, const char *, va_list);
 
 /* Provide a way to print an address via printf.  */
 #ifndef HOST_PTR_PRINTF
 
 /* Provide a way to print an address via printf.  */
 #ifndef HOST_PTR_PRINTF

-# ifdef HAVE_PRINTF_PTR
-#  define HOST_PTR_PRINTF "%p"
-# elif SIZEOF_INT == SIZEOF_VOID_P
-#  define HOST_PTR_PRINTF "%x"
-# elif SIZEOF_LONG == SIZEOF_VOID_P
-#  define HOST_PTR_PRINTF "%lx"
-# else
-#  define HOST_PTR_PRINTF "%llx"
-# endif
+#define HOST_PTR_PRINTF "%p"

 #endif /* ! HOST_PTR_PRINTF */
 
 /* By default, colon separates directories in a path.  */
 #endif /* ! HOST_PTR_PRINTF */
 
 /* By default, colon separates directories in a path.  */


@@ -586,6 +593,9 @@ extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
 #if ENABLE_ASSERT_CHECKING
 #define gcc_assert(EXPR)                                               \
    ((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0 : 0))
 #if ENABLE_ASSERT_CHECKING
 #define gcc_assert(EXPR)                                               \
    ((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0 : 0))

+#elif (GCC_VERSION >= 4005)
+#define gcc_assert(EXPR)                                               \
+  ((void)(__builtin_expect(!(EXPR), 0) ? __builtin_unreachable(), 0 : 0))

 #else
 /* Include EXPR, so that unused variable warnings do not occur.  */
 #define gcc_assert(EXPR) ((void)(0 && (EXPR)))
 #else
 /* Include EXPR, so that unused variable warnings do not occur.  */
 #define gcc_assert(EXPR) ((void)(0 && (EXPR)))


@@ -593,7 +603,11 @@ extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
 
 /* Use gcc_unreachable() to mark unreachable locations (like an
    unreachable default case of a switch.  Do not use gcc_assert(0).  */
 
 /* Use gcc_unreachable() to mark unreachable locations (like an
    unreachable default case of a switch.  Do not use gcc_assert(0).  */

+#if (GCC_VERSION >= 4005) && !ENABLE_ASSERT_CHECKING
+#define gcc_unreachable() __builtin_unreachable()
+#else

 #define gcc_unreachable() (fancy_abort (__FILE__, __LINE__, __FUNCTION__))
 #define gcc_unreachable() (fancy_abort (__FILE__, __LINE__, __FUNCTION__))

+#endif

 
 /* Provide a fake boolean type.  We make no attempt to use the
    C99 _Bool, as it may not be available in the bootstrap compiler,
 
 /* Provide a fake boolean type.  We make no attempt to use the
    C99 _Bool, as it may not be available in the bootstrap compiler,


@@ -622,7 +636,6 @@ extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
 # define FALSE false
 #endif /* !__cplusplus */
 
 # define FALSE false
 #endif /* !__cplusplus */
 

-

 /* Some compilers do not allow the use of unsigned char in bitfields.  */
 #define BOOL_BITFIELD unsigned int
 
 /* Some compilers do not allow the use of unsigned char in bitfields.  */
 #define BOOL_BITFIELD unsigned int
 


@@ -684,7 +697,7 @@ extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
        DIVDI3_LIBCALL UDIVSI3_LIBCALL UDIVDI3_LIBCALL MODSI3_LIBCALL   \
        MODDI3_LIBCALL UMODSI3_LIBCALL UMODDI3_LIBCALL BUILD_VA_LIST_TYPE \
        PRETEND_OUTGOING_VARARGS_NAMED STRUCT_VALUE_INCOMING_REGNUM     \
        DIVDI3_LIBCALL UDIVSI3_LIBCALL UDIVDI3_LIBCALL MODSI3_LIBCALL   \
        MODDI3_LIBCALL UMODSI3_LIBCALL UMODDI3_LIBCALL BUILD_VA_LIST_TYPE \
        PRETEND_OUTGOING_VARARGS_NAMED STRUCT_VALUE_INCOMING_REGNUM     \

-       ASM_OUTPUT_SECTION_NAME PROMOTE_FUNCTION_ARGS                   \
+       ASM_OUTPUT_SECTION_NAME PROMOTE_FUNCTION_ARGS PROMOTE_FUNCTION_MODE \

        STRUCT_VALUE_INCOMING STRICT_ARGUMENT_NAMING                    \
        PROMOTE_FUNCTION_RETURN PROMOTE_PROTOTYPES STRUCT_VALUE_REGNUM  \
        SETUP_INCOMING_VARARGS EXPAND_BUILTIN_SAVEREGS                  \
        STRUCT_VALUE_INCOMING STRICT_ARGUMENT_NAMING                    \
        PROMOTE_FUNCTION_RETURN PROMOTE_PROTOTYPES STRUCT_VALUE_REGNUM  \
        SETUP_INCOMING_VARARGS EXPAND_BUILTIN_SAVEREGS                  \


@@ -692,7 +705,10 @@ extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
        HANDLE_PRAGMA_REDEFINE_EXTNAME HANDLE_PRAGMA_EXTERN_PREFIX      \
        MUST_PASS_IN_STACK FUNCTION_ARG_PASS_BY_REFERENCE               \
         VECTOR_MODE_SUPPORTED_P TARGET_SUPPORTS_HIDDEN                         \
        HANDLE_PRAGMA_REDEFINE_EXTNAME HANDLE_PRAGMA_EXTERN_PREFIX      \
        MUST_PASS_IN_STACK FUNCTION_ARG_PASS_BY_REFERENCE               \
         VECTOR_MODE_SUPPORTED_P TARGET_SUPPORTS_HIDDEN                         \

-       FUNCTION_ARG_PARTIAL_NREGS ASM_OUTPUT_DWARF_DTPREL
+       FUNCTION_ARG_PARTIAL_NREGS ASM_OUTPUT_DWARF_DTPREL              \
+       ALLOCATE_INITIAL_VALUE LEGITIMIZE_ADDRESS FRAME_POINTER_REQUIRED \
+       CAN_ELIMINATE TRAMPOLINE_TEMPLATE INITIALIZE_TRAMPOLINE         \
+       TRAMPOLINE_ADJUST_ADDRESS STATIC_CHAIN STATIC_CHAIN_INCOMING

 
 /* Other obsolete target macros, or macros that used to be in target
    headers and were not used, and may be obsolete or may never have
 
 /* Other obsolete target macros, or macros that used to be in target
    headers and were not used, and may be obsolete or may never have


@@ -739,7 +755,14 @@ extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
        CASE_DROPS_THROUGH TARGET_BELL TARGET_BS TARGET_CR TARGET_DIGIT0   \
         TARGET_ESC TARGET_FF TARGET_NEWLINE TARGET_TAB TARGET_VT          \
         LINK_LIBGCC_SPECIAL DONT_ACCESS_GBLS_AFTER_EPILOGUE               \
        CASE_DROPS_THROUGH TARGET_BELL TARGET_BS TARGET_CR TARGET_DIGIT0   \
         TARGET_ESC TARGET_FF TARGET_NEWLINE TARGET_TAB TARGET_VT          \
         LINK_LIBGCC_SPECIAL DONT_ACCESS_GBLS_AFTER_EPILOGUE               \

-       TARGET_OPTIONS TARGET_SWITCHES EXTRA_CC_MODES
+       TARGET_OPTIONS TARGET_SWITCHES EXTRA_CC_MODES FINALIZE_PIC         \
+       PREDICATE_CODES SPECIAL_MODE_PREDICATES UNALIGNED_WORD_ASM_OP      \
+       EXTRA_SECTIONS EXTRA_SECTION_FUNCTIONS READONLY_DATA_SECTION       \
+       TARGET_ASM_EXCEPTION_SECTION TARGET_ASM_EH_FRAME_SECTION           \
+       SMALL_ARG_MAX ASM_OUTPUT_SHARED_BSS ASM_OUTPUT_SHARED_COMMON       \
+       ASM_OUTPUT_SHARED_LOCAL ASM_MAKE_LABEL_LINKONCE                    \
+       STACK_CHECK_PROBE_INTERVAL STACK_CHECK_PROBE_LOAD                  \
+       ORDER_REGS_FOR_LOCAL_ALLOC

 
 /* Hooks that are no longer used.  */
  #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE  \
 
 /* Hooks that are no longer used.  */
  #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE  \


@@ -747,7 +770,11 @@ extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
        LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS \
        LANG_HOOKS_PUSHLEVEL LANG_HOOKS_SET_BLOCK \
        LANG_HOOKS_MAYBE_BUILD_CLEANUP LANG_HOOKS_UPDATE_DECL_AFTER_SAVING \
        LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS \
        LANG_HOOKS_PUSHLEVEL LANG_HOOKS_SET_BLOCK \
        LANG_HOOKS_MAYBE_BUILD_CLEANUP LANG_HOOKS_UPDATE_DECL_AFTER_SAVING \

-       LANG_HOOKS_POPLEVEL LANG_HOOKS_TRUTHVALUE_CONVERSION
+       LANG_HOOKS_POPLEVEL LANG_HOOKS_TRUTHVALUE_CONVERSION \
+       TARGET_PROMOTE_FUNCTION_ARGS TARGET_PROMOTE_FUNCTION_RETURN
+
+/* Miscellaneous macros that are no longer used.  */
+ #pragma GCC poison USE_MAPPED_LOCATION

 
 /* Libiberty macros that are no longer used in GCC.  */
 #undef ANSI_PROTOTYPES
 
 /* Libiberty macros that are no longer used in GCC.  */
 #undef ANSI_PROTOTYPES


@@ -772,4 +799,72 @@ extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
 
 #endif /* GCC >= 3.0 */
 
 
 #endif /* GCC >= 3.0 */
 

+/* This macro allows casting away const-ness to pass -Wcast-qual
+   warnings.  DO NOT USE THIS UNLESS YOU REALLY HAVE TO!  It should
+   only be used in certain specific cases.  One valid case is where
+   the C standard definitions or prototypes force you to.  E.g. if you
+   need to free a const object, or if you pass a const string to
+   execv, et al.  Another valid use would be in an allocation function
+   that creates const objects that need to be initialized.  In some
+   cases we have non-const functions that return the argument
+   (e.g. next_nonnote_insn).  Rather than create const shadow
+   functions, we can cast away const-ness in calling these interfaces
+   if we're careful to verify that the called function does indeed not
+   modify its argument and the return value is only used in a const
+   context.  (This can be somewhat dangerous as these assumptions can
+   change after the fact).  Beyond these uses, most other cases of
+   using this macro should be viewed with extreme caution.  */
+
+#ifdef __cplusplus
+#define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X))
+#else
+#if defined(__GNUC__) && GCC_VERSION > 4000
+/* GCC 4.0.x has a bug where it may ICE on this expression,
+   so does GCC 3.4.x (PR17436).  */
+#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
+#else
+#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)(FROMTYPE)(X))
+#endif
+#endif
+#define CONST_CAST(TYPE,X) CONST_CAST2(TYPE, const TYPE, (X))
+#define CONST_CAST_TREE(X) CONST_CAST(union tree_node *, (X))
+#define CONST_CAST_RTX(X) CONST_CAST(struct rtx_def *, (X))
+#define CONST_CAST_BB(X) CONST_CAST(struct basic_block_def *, (X))
+#define CONST_CAST_GIMPLE(X) CONST_CAST(union gimple_statement_d *, (X))
+
+/* Activate certain diagnostics as warnings (not errors via the
+   -Werror flag).  */
+#if GCC_VERSION >= 4003
+/* If asserts are disabled, activate -Wuninitialized as a warning (not
+   an error/-Werror).  */
+#ifndef ENABLE_ASSERT_CHECKING
+#pragma GCC diagnostic warning "-Wuninitialized"
+#endif
+#endif
+
+#ifdef ENABLE_VALGRIND_CHECKING
+# ifdef HAVE_VALGRIND_MEMCHECK_H
+#  include <valgrind/memcheck.h>
+# elif defined HAVE_MEMCHECK_H
+#  include <memcheck.h>
+# else
+#  include <valgrind.h>
+# endif
+/* Compatibility macros to let valgrind 3.1 work.  */
+# ifndef VALGRIND_MAKE_MEM_NOACCESS
+#  define VALGRIND_MAKE_MEM_NOACCESS VALGRIND_MAKE_NOACCESS
+# endif
+# ifndef VALGRIND_MAKE_MEM_DEFINED
+#  define VALGRIND_MAKE_MEM_DEFINED VALGRIND_MAKE_READABLE
+# endif
+# ifndef VALGRIND_MAKE_MEM_UNDEFINED
+#  define VALGRIND_MAKE_MEM_UNDEFINED VALGRIND_MAKE_WRITABLE
+# endif
+#else
+/* Avoid #ifdef:s when we can help it.  */
+#define VALGRIND_DISCARD(x)
+#define VALGRIND_MALLOCLIKE_BLOCK(w,x,y,z)
+#define VALGRIND_FREELIKE_BLOCK(x,y)
+#endif
+

 #endif /* ! GCC_SYSTEM_H */
 #endif /* ! GCC_SYSTEM_H */