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| author | Zack Weinberg <zack@gcc.gnu.org> | 2002-09-28 00:30:37 +0000 |
|---|---|---|
| committer | Zack Weinberg <zack@gcc.gnu.org> | 2002-09-28 00:30:37 +0000 |
| commit | 57147be1b61543b6ae26836c03f7138e3121ecfe (patch) | |
| tree | e9272d171d25a90ccbdb45733b655a0414aae29c /gcc/cppmacro.c | |
| parent | b1af5a30a54316b085b979805a6bced0ff93a7b1 (diff) | |
| download | gcc-57147be1b61543b6ae26836c03f7138e3121ecfe.zip gcc-57147be1b61543b6ae26836c03f7138e3121ecfe.tar.gz gcc-57147be1b61543b6ae26836c03f7138e3121ecfe.tar.bz2 | |
re PR preprocessor/8055 (PATCH: cpp0 dies with SIG11 when building FreeBSD kernel)
2002-09-27 Alexander N. Kabaev <ak03@gte.com>
PR preprocessor/8055
* cppmacro.c (stringify_arg): Do not overflow the buffer
with the terminating NUL when the argument to be stringified
has no tokens.
* testsuite/gcc.dg/cpp/20020927-1.c: New.
From-SVN: r57599
Diffstat (limited to 'gcc/cppmacro.c')
| -rw-r--r-- | gcc/cppmacro.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/cppmacro.c b/gcc/cppmacro.c index b8fb792..113b20d 100644 --- a/gcc/cppmacro.c +++ b/gcc/cppmacro.c @@ -409,6 +409,12 @@ stringify_arg (pfile, arg) } /* Commit the memory, including NUL, and return the token. */ + if ((size_t) (BUFF_LIMIT (pfile->u_buff) - dest) < 1) + { + size_t len_so_far = dest - BUFF_FRONT (pfile->u_buff); + _cpp_extend_buff (pfile, &pfile->u_buff, 1); + dest = BUFF_FRONT (pfile->u_buff) + len_so_far; + } len = dest - BUFF_FRONT (pfile->u_buff); BUFF_FRONT (pfile->u_buff) = dest + 1; return new_string_token (pfile, dest - len, len); |