cpplib.h (_dollar_ok): New macro.

	* cpplib.h (_dollar_ok): New macro.
	(is_idchar, is_idstart): Use it.
	(IStable): Rename to _cpp_IStable.  Declare it const if
	gcc >=2.7 or C99.  Delete all references to FAKE_CONST.
	(is_idchar, is_idstart, is_numchar, is_numstart, is_hspace,
	is_space): Update for renamed IStable.

	* cppinit.c: Delete all references to FAKE_CONST and CAT
	macros. Define init_IStable as empty macro if gcc >=2.7 or
	C99. Change TABLE() to ISTABLE and hardcode name of table.
	(cpp_start_read): Don't change the IStable based on
	dollars_in_ident.

	* cpphash.c (unsafe_chars): Add pfile argument.  All callers
	changed.  Handle '$' for char1 correctly.
	* cpplib.c (cpp_get_token): Use is_numchar when parsing numbers.

	* cppexp.c (tokentab2): Make const.
	(cpp_lex): Make toktab const.
	* cppinit.c (include_defaults_array): Make const.
	(initialize_standard_includes): Make default_include const.

From-SVN: r32321

1 files changed, 16 insertions, 15 deletions

diff --git a/gcc/cpplib.h b/gcc/cpplib.h
index 85d0744..a9e8f15 100644
--- a/gcc/cpplib.h
+++ b/gcc/cpplib.h
@@ -612,22 +612,23 @@ enum node_type {
 #define IShspace	0x08	/* ' ' \t \f \v */
 #define ISspace		0x10	/* ' ' \t \f \v \n */
 
-#define is_idchar(x)	(IStable[x] & ISidnum)
-#define is_numchar(x)	(IStable[x] & ISidnum)
-#define is_idstart(x)	(IStable[x] & ISidstart)
-#define is_numstart(x)	(IStable[x] & ISnumstart)
-#define is_hspace(x)	(IStable[x] & IShspace)
-#define is_space(x)	(IStable[x] & ISspace)
-
-/* This table is not really `const', but it is only modified at
-   initialization time, in a separate translation unit from the rest
-   of the library.  We let the rest of the library think it is `const'
-   to get better code and some additional compile-time checks.  */
-#ifndef FAKE_CONST
-#define FAKE_CONST const
+#define _dollar_ok(x)	((x) == '$' && CPP_OPTIONS (pfile)->dollars_in_ident)
+
+#define is_idchar(x)	((_cpp_IStable[x] & ISidnum) || _dollar_ok(x))
+#define is_idstart(x)	((_cpp_IStable[x] & ISidstart) || _dollar_ok(x))
+#define is_numchar(x)	(_cpp_IStable[x] & ISidnum)
+#define is_numstart(x)	(_cpp_IStable[x] & ISnumstart)
+#define is_hspace(x)	(_cpp_IStable[x] & IShspace)
+#define is_space(x)	(_cpp_IStable[x] & ISspace)
+
+/* This table is constant if it can be initialized at compile time,
+   which is the case if cpp was compiled with GCC >=2.7, or another
+   compiler that supports C99.  */
+#if (GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)
+extern const unsigned char _cpp_IStable[256];
+#else
+extern unsigned char _cpp_IStable[256];
 #endif
-extern FAKE_CONST unsigned char IStable[256];
-#undef FAKE_CONST
 
 /* Stack of conditionals currently in progress
    (including both successful and failing conditionals).  */