cpphash.h (struct spec_nodes): Remove n__CHAR_UNSIGNED__.

	* cpphash.h (struct spec_nodes): Remove n__CHAR_UNSIGNED__.
	* cpphash.c (_cpp_init_hashtable): Similarly.
	* cppinit.c (cpp_create_reader): Default the signed_char flag.
	(init_builtins): Define __CHAR_UNSIGNED__ appropriately.
	(COMMAND_LINE_OPTIONS): Recognise -f{un,}signed-char.
	(cpp_handle_option): Handle the new options.
	* cpplex.c (cpp_interpret_charconst): Use new flag.
	* cpplib.h (struct cpp_options): New member signed_char.
	* gcc.c (cpp_unique_options): Remove %c spec and documentation.
	(cpp_options): Handle -fsigned-char and -funsigned-char.
	(static_specs): Remove signed_char_spec.
	(do_spec1): Don't handle %c.
	* system.h: Poison SIGNED_CHAR_SPEC.
	* tradcif.y (yylex): Use flag_signed_char.
	* tradcpp.h (flag_signed_char): New.
	* tradcpp.c (flag_signed_char): New.
	(main): Handle new command-line options.
	(initialize_builtins): Define __CHAR_UNSIGNED__ if appropriate.
config:
	* alpha/alpha.h (SIGNED_CHAR_SPEC): Remove.
	* avr/avr.h: Remove old comments.
	* i960/i960.h (CPP_SPEC): Pass -fsigned-char if -mic*.
	(CC1_SPEC): Pass -fsigned-char if -mic*.
	(SIGNED_CHAR_SPEC): Remove.
doc:
	* tm.texi (SIGNED_CHAR_SPEC): Remove documentation.
testsuite:
	* gcc.dg/cpp/uchar-1.c, uchar-2.c, uchar-3.c: New tests.

From-SVN: r49444

1 files changed, 4 insertions, 23 deletions

diff --git a/gcc/gcc.c b/gcc/gcc.c
index 8968af6d0cf..41c62a9e4fe 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -445,7 +445,6 @@ or with constant text in a single argument.
 	if multilib_dir is not set or is ".", output "".
  %S     process STARTFILE_SPEC as a spec.  A capital S is actually used here.
  %E     process ENDFILE_SPEC as a spec.  A capital E is actually used here.
- %c	process SIGNED_CHAR_SPEC as a spec.
  %C     process CPP_SPEC as a spec.
  %1	process CC1_SPEC as a spec.
  %2	process CC1PLUS_SPEC as a spec.
@@ -511,7 +510,7 @@ CC also knows implicitly that arguments starting in `-l' are to be
 treated as compiler output files, and passed to the linker in their
 proper position among the other output files.  */
 
-/* Define the macros used for specs %a, %l, %L, %S, %c, %C, %1.  */
+/* Define the macros used for specs %a, %l, %L, %S, %C, %1.  */
 
 /* config.h can define ASM_SPEC to provide extra args to the assembler
    or extra switch-translations.  */
@@ -582,17 +581,6 @@ proper position among the other output files.  */
 #define ENDFILE_SPEC ""
 #endif
 
-/* This spec is used for telling cpp whether char is signed or not.  */
-#ifndef SIGNED_CHAR_SPEC
-/* Use #if rather than ?:
-   because MIPS C compiler rejects like ?: in initializers.  */
-#if DEFAULT_SIGNED_CHAR
-#define SIGNED_CHAR_SPEC "%{funsigned-char:-D__CHAR_UNSIGNED__}"
-#else
-#define SIGNED_CHAR_SPEC "%{!fsigned-char:-D__CHAR_UNSIGNED__}"
-#endif
-#endif
-
 #ifndef LINKER_NAME
 #define LINKER_NAME "collect2"
 #endif
@@ -651,7 +639,6 @@ static const char *cpp_spec = CPP_SPEC;
 static const char *cpp_predefines = CPP_PREDEFINES;
 static const char *cc1_spec = CC1_SPEC;
 static const char *cc1plus_spec = CC1PLUS_SPEC;
-static const char *signed_char_spec = SIGNED_CHAR_SPEC;
 static const char *asm_spec = ASM_SPEC;
 static const char *asm_final_spec = ASM_FINAL_SPEC;
 static const char *link_spec = LINK_SPEC;
@@ -681,7 +668,7 @@ static const char *cpp_unique_options =
  %{M} %{MM} %W{MF*} %{MG} %{MP} %{MQ*} %{MT*} %{M|MD|MM|MMD:%{o*:-MQ %*}}\
  %{!no-gcc:-D__GNUC__=%v1 -D__GNUC_MINOR__=%v2 -D__GNUC_PATCHLEVEL__=%v3}\
  %{!undef:%{!ansi:%{!std=*:%p}%{std=gnu*:%p}} %P} %{trigraphs}\
- %c %{Os:-D__OPTIMIZE_SIZE__} %{O*:%{!O0:-D__OPTIMIZE__}}\
+ %{Os:-D__OPTIMIZE_SIZE__} %{O*:%{!O0:-D__OPTIMIZE__}}\
  %{fno-inline|O0|!O*:-D__NO_INLINE__} %{ffast-math:-D__FAST_MATH__}\
  %{fshort-wchar:-U__WCHAR_TYPE__ -D__WCHAR_TYPE__=short\\ unsigned\\ int}\
  %{ffreestanding:-D__STDC_HOSTED__=0} %{fno-hosted:-D__STDC_HOSTED__=0}\
@@ -694,6 +681,7 @@ static const char *cpp_unique_options =
 static const char *cpp_options =
 "%(cpp_unique_options) %{std*} %{d*} %{W*} %{w} %{pedantic*}\
  %{fshow-column} %{fno-show-column}\
+ %{fsigned-char&funsigned-char}\
  %{fleading-underscore} %{fno-leading-underscore}\
  %{fno-operator-names} %{ftabstop=*}";
 
@@ -1382,7 +1370,6 @@ static struct spec_list static_specs[] =
   INIT_STATIC_SPEC ("libgcc",			&libgcc_spec),
   INIT_STATIC_SPEC ("startfile",		&startfile_spec),
   INIT_STATIC_SPEC ("switches_need_spaces",	&switches_need_spaces),
-  INIT_STATIC_SPEC ("signed_char",		&signed_char_spec),
   INIT_STATIC_SPEC ("predefines",		&cpp_predefines),
   INIT_STATIC_SPEC ("cross_compile",		&cross_compile),
   INIT_STATIC_SPEC ("version",			&compiler_version),
@@ -1785,7 +1772,7 @@ load_specs (filename)
 
    A suffix which starts with `*' is a definition for
    one of the machine-specific sub-specs.  The "suffix" should be
-   *asm, *cc1, *cpp, *link, *startfile, *signed_char, etc.
+   *asm, *cc1, *cpp, *link, *startfile, etc.
    The corresponding spec is stored in asm_spec, etc.,
    rather than in the `compilers' vector.
 
@@ -4783,12 +4770,6 @@ do_spec_1 (spec, inswitch, soft_matched_part)
 	      return value;
 	    break;
 
-	  case 'c':
-	    value = do_spec_1 (signed_char_spec, 0, NULL);
-	    if (value != 0)
-	      return value;
-	    break;
-
 	  case 'C':
 	    {
 	      const char *const spec