diff options
Diffstat (limited to 'gcc/cpphash.h')
| -rw-r--r-- | gcc/cpphash.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/gcc/cpphash.h b/gcc/cpphash.h index 133c9b93..5e69c85 100644 --- a/gcc/cpphash.h +++ b/gcc/cpphash.h @@ -98,8 +98,15 @@ struct cpp_macro /* If macro defined in system header. */ unsigned int syshdr : 1; + + /* Non-zero if it has been expanded or had its existence tested. */ + unsigned int used : 1; }; +#define _cpp_mark_macro_used(NODE) do { \ + if ((NODE)->type == NT_MACRO && !((NODE)->flags & NODE_BUILTIN)) \ + (NODE)->value.macro->used = 1; } while (0) + /* A generic memory buffer, and operations on it. */ typedef struct _cpp_buff _cpp_buff; struct _cpp_buff @@ -370,6 +377,9 @@ struct cpp_reader for include files. (Altered as we get more of them.) */ unsigned int max_include_len; + /* Macros on or after this line are warned about if unused. */ + unsigned int first_unused_line; + /* Date and time text. Calculated together if either is requested. */ const uchar *date; const uchar *time; @@ -477,6 +487,8 @@ extern bool _cpp_arguments_ok PARAMS ((cpp_reader *, cpp_macro *, unsigned int)); extern const uchar *_cpp_builtin_macro_text PARAMS ((cpp_reader *, cpp_hashnode *)); +int _cpp_warn_if_unused_macro PARAMS ((cpp_reader *, cpp_hashnode *, + void *)); /* In cpphash.c */ extern void _cpp_init_hashtable PARAMS ((cpp_reader *, hash_table *)); extern void _cpp_destroy_hashtable PARAMS ((cpp_reader *)); |