From 1a9b3f04c11eb467a8dc504a37dad57a371a0d4c Mon Sep 17 00:00:00 2001 From: Christophe Lyon Date: Thu, 20 May 2021 08:10:50 +0000 Subject: c: Add support for __FILE_NAME__ macro (PR c/42579) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The toolchain provided by ST for stm32 has had support for __FILENAME__ for a while, but clang/llvm has recently implemented support for __FILE_NAME__, so it seems better to use the same macro name in GCC. It happens that the ST patch is similar to the one proposed in PR c/42579. Given these input files: :::::::::::::: mydir/myinc.h :::::::::::::: char* mystringh_file = __FILE__; char* mystringh_filename = __FILE_NAME__; char* mystringh_base_file = __BASE_FILE__; :::::::::::::: mydir/mysrc.c :::::::::::::: char* mystring_file = __FILE__; char* mystring_filename = __FILE_NAME__; char* mystring_base_file = __BASE_FILE__; we produce: $ gcc mydir/mysrc.c -I . -E char* mystringh_file = "./mydir/myinc.h"; char* mystringh_filename = "myinc.h"; char* mystringh_base_file = "mydir/mysrc.c"; char* mystring_file = "mydir/mysrc.c"; char* mystring_filename = "mysrc.c"; char* mystring_base_file = "mydir/mysrc.c"; 2021-05-20 Christophe Lyon Torbjörn Svensson PR c/42579 libcpp/ * include/cpplib.h (cpp_builtin_type): Add BT_FILE_NAME entry. * init.c (builtin_array): Likewise. * macro.c (_cpp_builtin_macro_text): Add support for BT_FILE_NAME. gcc/ * doc/cpp.texi (Common Predefined Macros): Document __FILE_NAME__. gcc/testsuite/ * c-c++-common/spellcheck-reserved.c: Add tests for __FILE_NAME__. * c-c++-common/cpp/file-name-1.c: New test. --- libcpp/include/cpplib.h | 1 + libcpp/init.c | 1 + libcpp/macro.c | 14 ++++++++++---- 3 files changed, 12 insertions(+), 4 deletions(-) (limited to 'libcpp') diff --git a/libcpp/include/cpplib.h b/libcpp/include/cpplib.h index 2cdaf19..7e84063 100644 --- a/libcpp/include/cpplib.h +++ b/libcpp/include/cpplib.h @@ -886,6 +886,7 @@ enum cpp_builtin_type BT_SPECLINE = 0, /* `__LINE__' */ BT_DATE, /* `__DATE__' */ BT_FILE, /* `__FILE__' */ + BT_FILE_NAME, /* `__FILE_NAME__' */ BT_BASE_FILE, /* `__BASE_FILE__' */ BT_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */ BT_TIME, /* `__TIME__' */ diff --git a/libcpp/init.c b/libcpp/init.c index d5d4e99..a450470 100644 --- a/libcpp/init.c +++ b/libcpp/init.c @@ -405,6 +405,7 @@ static const struct builtin_macro builtin_array[] = B("__TIME__", BT_TIME, false), B("__DATE__", BT_DATE, false), B("__FILE__", BT_FILE, false), + B("__FILE_NAME__", BT_FILE_NAME, false), B("__BASE_FILE__", BT_BASE_FILE, false), B("__LINE__", BT_SPECLINE, true), B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL, true), diff --git a/libcpp/macro.c b/libcpp/macro.c index dff7c98..4fc5f83 100644 --- a/libcpp/macro.c +++ b/libcpp/macro.c @@ -531,15 +531,21 @@ _cpp_builtin_macro_text (cpp_reader *pfile, cpp_hashnode *node, } break; case BT_FILE: + case BT_FILE_NAME: case BT_BASE_FILE: { unsigned int len; const char *name; uchar *buf; - - if (node->value.builtin == BT_FILE) - name = linemap_get_expansion_filename (pfile->line_table, - pfile->line_table->highest_line); + + if (node->value.builtin == BT_FILE + || node->value.builtin == BT_FILE_NAME) + { + name = linemap_get_expansion_filename (pfile->line_table, + pfile->line_table->highest_line); + if ((node->value.builtin == BT_FILE_NAME) && name) + name = lbasename (name); + } else { name = _cpp_get_file_name (pfile->main_file); -- cgit v1.1