diff options
Diffstat (limited to 'gcc/c-decl.c')
| -rw-r--r-- | gcc/c-decl.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/gcc/c-decl.c b/gcc/c-decl.c index 6b5d295..8a57460 100644 --- a/gcc/c-decl.c +++ b/gcc/c-decl.c @@ -288,6 +288,7 @@ static tree grokdeclarator PARAMS ((tree, tree, enum decl_context, int)); static tree grokparms PARAMS ((tree, int)); static void layout_array_type PARAMS ((tree)); +static tree c_make_fname_decl PARAMS ((tree, const char *, int)); /* C-specific option variables. */ @@ -3059,6 +3060,7 @@ init_decl_processing () pedantic_lvalues = pedantic; /* Create the global bindings for __FUNCTION__ and __PRETTY_FUNCTION__. */ + make_fname_decl = c_make_fname_decl; declare_function_name (); start_identifier_warnings (); @@ -3085,6 +3087,43 @@ init_decl_processing () ggc_add_tree_root (&static_dtors, 1); } +/* Create the VAR_DECL for __FUNCTION__ etc. ID is the name to give the + decl, NAME is the initialization string and TYPE_DEP indicates whether + NAME depended on the type of the function. As we don't yet implement + delayed emission of static data, we mark the decl as emitted + so it is not placed in the output. Anything using it must therefore pull + out the STRING_CST initializer directly. This does mean that these names + are string merging candidates, which C99 does not permit. */ + +static tree +c_make_fname_decl (id, name, type_dep) + tree id; + const char *name; + int type_dep ATTRIBUTE_UNUSED; +{ + tree decl, type, init; + size_t length = strlen (name); + + type = build_array_type + (build_qualified_type (char_type_node, TYPE_QUAL_CONST), + build_index_type (build_int_2 (length, 0))); + + decl = build_decl (VAR_DECL, id, type); + TREE_STATIC (decl) = 1; + TREE_READONLY (decl) = 1; + TREE_ASM_WRITTEN (decl) = 1; + DECL_SOURCE_LINE (decl) = 0; + DECL_ARTIFICIAL (decl) = 1; + DECL_IN_SYSTEM_HEADER (decl) = 1; + DECL_IGNORED_P (decl) = 1; + init = build_string (length + 1, name); + TREE_TYPE (init) = type; + DECL_INITIAL (decl) = init; + finish_decl (pushdecl (decl), init, NULL_TREE); + + return decl; +} + /* Return a definition for a builtin function named NAME and whose data type is TYPE. TYPE should be a function type with argument types. FUNCTION_CODE tells later passes how to compile calls to this function. |