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re PR preprocessor/39646 (__FILE__ breaks for empty file name)

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libcpp:
	PR preprocessor/39646
	* include/line-map.h (enum lc_reason): Add LC_RENAME_VERBATIM.
	* line-map.c (linemap_add): Handle LC_RENAME_VERBATIM.
	* directives.c (do_line, do_linemarker): Use LC_RENAME_VERBATIM in
	place of LC_RENAME.

gcc/testsuite:
	* gcc.dg/cpp/line8.c: New test.

From-SVN: r146319
This commit is contained in:
Joseph Myers
2009-04-18 18:36:28 +01:00
committed by Joseph Myers
parent b8add5942c
commit c7f9c0b983
6 changed files with 32 additions and 5 deletions
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libcpp/include/line-map.h
+3 -2
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@@ -31,8 +31,9 @@ along with this program; see the file COPYING3. If not see
when including a new file, e.g. a #include directive in C.
LC_LEAVE is when reaching a file's end. LC_RENAME is when a file
name or line number changes for neither of the above reasons
(e.g. a #line directive in C). */
enum lc_reason {LC_ENTER = 0, LC_LEAVE, LC_RENAME};
(e.g. a #line directive in C); LC_RENAME_VERBATIM is like LC_RENAME
but a filename of "" is not specially interpreted as standard input. */
enum lc_reason {LC_ENTER = 0, LC_LEAVE, LC_RENAME, LC_RENAME_VERBATIM};
/* The type of line numbers. */
typedef unsigned int linenum_type;