re PR c++/24009 (C++ fails to print #include stack)
PR c++/24009 * input.h (restore_input_file_stack): Declare. (INPUT_FILE_STACK_BITS): Define. * toplev.c (fs_p, input_file_stack_history, input_file_stack_restored, restore_input_file_stack): New. (push_srcloc, pop_srcloc): Check for input_file_stack_tick overflowing INPUT_FILE_STACK_BITS bits. Save new state of stack. (pop_srcloc): Don't free old state of stack. cp: * parser.c (struct cp_token): Add input_file_stack_index. (eof_token): Update. (cp_lexer_get_preprocessor_token): Save input_file_stack_tick. (cp_lexer_set_source_position_from_token): Restore input file stack. From-SVN: r116479
This commit is contained in:
Joseph Myers
Joseph Myers
parent
63d0dca480
commit
02ec74b9d2
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@ -1,3 +1,14 @@
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2006-08-26 Joseph S. Myers <joseph@codesourcery.com>
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PR c++/24009
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* input.h (restore_input_file_stack): Declare.
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(INPUT_FILE_STACK_BITS): Define.
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* toplev.c (fs_p, input_file_stack_history,
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input_file_stack_restored, restore_input_file_stack): New.
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(push_srcloc, pop_srcloc): Check for input_file_stack_tick
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overflowing INPUT_FILE_STACK_BITS bits. Save new state of stack.
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(pop_srcloc): Don't free old state of stack.
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2006-08-26 David Edelsohn <edelsohn@gnu.org>
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PR target/27544
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@ -1,3 +1,12 @@
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2006-08-26 Joseph S. Myers <joseph@codesourcery.com>
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PR c++/24009
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* parser.c (struct cp_token): Add input_file_stack_index.
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(eof_token): Update.
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(cp_lexer_get_preprocessor_token): Save input_file_stack_tick.
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(cp_lexer_set_source_position_from_token): Restore input file
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stack.
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2006-08-26 Lee Millward <lee.millward@codesourcery.com>
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PR c++/28736
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@ -66,6 +66,8 @@ typedef struct cp_token GTY (())
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KEYWORD is RID_MAX) iff this name was looked up and found to be
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ambiguous. An error has already been reported. */
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BOOL_BITFIELD ambiguous_p : 1;
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/* The input file stack index at which this token was found. */
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unsigned input_file_stack_index : INPUT_FILE_STACK_BITS;
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/* The value associated with this token, if any. */
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tree value;
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/* The location at which this token was found. */
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@ -79,7 +81,7 @@ DEF_VEC_ALLOC_P (cp_token_position,heap);
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static const cp_token eof_token =
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{
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CPP_EOF, RID_MAX, 0, PRAGMA_NONE, 0, 0, false, NULL_TREE,
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CPP_EOF, RID_MAX, 0, PRAGMA_NONE, 0, 0, false, 0, NULL_TREE,
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#if USE_MAPPED_LOCATION
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0
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#else
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@ -393,6 +395,7 @@ cp_lexer_get_preprocessor_token (cp_lexer *lexer ATTRIBUTE_UNUSED ,
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/* Get a new token from the preprocessor. */
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token->type
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= c_lex_with_flags (&token->value, &token->location, &token->flags);
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token->input_file_stack_index = input_file_stack_tick;
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token->keyword = RID_MAX;
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token->pragma_kind = PRAGMA_NONE;
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token->in_system_header = in_system_header;
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@ -450,7 +453,8 @@ cp_lexer_get_preprocessor_token (cp_lexer *lexer ATTRIBUTE_UNUSED ,
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}
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}
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/* Update the globals input_location and in_system_header from TOKEN. */
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/* Update the globals input_location and in_system_header and the
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input file stack from TOKEN. */
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static inline void
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cp_lexer_set_source_position_from_token (cp_token *token)
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{
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@ -458,6 +462,7 @@ cp_lexer_set_source_position_from_token (cp_token *token)
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{
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input_location = token->location;
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in_system_header = token->in_system_header;
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restore_input_file_stack (token->input_file_stack_index);
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}
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}
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@ -84,6 +84,7 @@ extern void push_srcloc (location_t);
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extern void push_srcloc (const char *name, int line);
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#endif /* ! USE_MAPPED_LOCATION */
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extern void pop_srcloc (void);
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extern void restore_input_file_stack (int);
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#define LOCATION_FILE(LOC) ((expand_location (LOC)).file)
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#define LOCATION_LINE(LOC) ((expand_location (LOC)).line)
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@ -98,4 +99,7 @@ extern struct file_stack *input_file_stack;
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/* Incremented on each change to input_file_stack. */
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extern int input_file_stack_tick;
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/* The number of bits available for input_file_stack_tick. */
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#define INPUT_FILE_STACK_BITS 31
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#endif
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36
gcc/toplev.c
36
gcc/toplev.c
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@ -164,6 +164,16 @@ struct file_stack *input_file_stack;
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/* Incremented on each change to input_file_stack. */
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int input_file_stack_tick;
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/* Record of input_file_stack at each tick. */
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typedef struct file_stack *fs_p;
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DEF_VEC_P(fs_p);
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DEF_VEC_ALLOC_P(fs_p,heap);
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static VEC(fs_p,heap) *input_file_stack_history;
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/* Whether input_file_stack has been restored to a previous state (in
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which case there should be no more pushing). */
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static bool input_file_stack_restored;
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/* Name to use as base of names for dump output files. */
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const char *dump_base_name;
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@ -951,6 +961,10 @@ push_srcloc (const char *file, int line)
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{
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struct file_stack *fs;
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gcc_assert (!input_file_stack_restored);
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if (input_file_stack_tick == (int) ((1U << INPUT_FILE_STACK_BITS) - 1))
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sorry ("GCC supports only %d input file changes", input_file_stack_tick);
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fs = XNEW (struct file_stack);
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fs->location = input_location;
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fs->next = input_file_stack;
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@ -962,6 +976,7 @@ push_srcloc (const char *file, int line)
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#endif
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input_file_stack = fs;
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input_file_stack_tick++;
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VEC_safe_push (fs_p, heap, input_file_stack_history, input_file_stack);
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}
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/* Pop the top entry off the stack of presently open source files.
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@ -973,11 +988,30 @@ pop_srcloc (void)
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{
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struct file_stack *fs;
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gcc_assert (!input_file_stack_restored);
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if (input_file_stack_tick == (int) ((1U << INPUT_FILE_STACK_BITS) - 1))
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sorry ("GCC supports only %d input file changes", input_file_stack_tick);
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fs = input_file_stack;
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input_location = fs->location;
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input_file_stack = fs->next;
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free (fs);
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input_file_stack_tick++;
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VEC_safe_push (fs_p, heap, input_file_stack_history, input_file_stack);
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}
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/* Restore the input file stack to its state as of TICK, for the sake
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of diagnostics after processing the whole input. Once this has
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been called, push_srcloc and pop_srcloc may no longer be
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called. */
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void
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restore_input_file_stack (int tick)
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{
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if (tick == 0)
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input_file_stack = NULL;
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else
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input_file_stack = VEC_index (fs_p, input_file_stack_history, tick - 1);
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input_file_stack_tick = tick;
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input_file_stack_restored = true;
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}
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/* Compile an entire translation unit. Write a file of assembly
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