diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/cpp/20020927-1.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/cpp/20020927-1.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/cpp/20020927-1.c b/gcc/testsuite/gcc.dg/cpp/20020927-1.c new file mode 100644 index 00000000000..91f89518a22 --- /dev/null +++ b/gcc/testsuite/gcc.dg/cpp/20020927-1.c @@ -0,0 +1,91 @@ +/* Test case for buffer overflow bug in token stringification. + See PR preprocessor/8055 for details. + Reported by Alexander N. Kabaev <ak03@gte.com>. + Test case written by Zack Weinberg <zack@codesourcery.com>. */ + +/* { dg-do preprocess } */ + +#define S(x) #x + +/* Fill up one internal buffer with data. */ +S(1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 1234567890123456789012345678901234567890123456789012345678901234567890 + 12345678901234567890123456789012345678901234567890123456789012345) + +/* When stringify_arg() was called with an empty macro argument, it would + advance the buffer pointer by one but fail to check for running past the + end of the buffer. We can only know where the end of the buffer is to + within about eight bytes, so do this sixteen times to be sure of hitting + it. */ + +S() +S() +S() +S() +S() +S() +S() +S() +S() +S() +S() +S() +S() +S() +S() +S() + +/* Now allocate more memory in the buffer, which should provoke a crash. */ + +S(abcdefghijklmnopqrstuvwxyz) +S(abcdefghijklmnopqrstuvwxyz) |