diff options
Diffstat (limited to 'gcc/testsuite')
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/builtin-strncat-chk-1.c | 38 |
2 files changed, 42 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index ebbae936261..2a7f88bcae4 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2006-10-23 Jakub Jelinek <jakub@redhat.com> + + * gcc.dg/builtin-strncat-chk-1.c: New test. + 2006-10-23 Jan Hubicka <jh@suse.cz> * gcc.dg/memmove-1.c: New test. diff --git a/gcc/testsuite/gcc.dg/builtin-strncat-chk-1.c b/gcc/testsuite/gcc.dg/builtin-strncat-chk-1.c new file mode 100644 index 00000000000..80d7b9d6ebf --- /dev/null +++ b/gcc/testsuite/gcc.dg/builtin-strncat-chk-1.c @@ -0,0 +1,38 @@ +/* Test whether buffer overflow warnings for __strncat_chk builtin + are emitted properly. */ +/* { dg-do compile } */ +/* { dg-options "-O2 -std=gnu99" } */ + +extern void abort (void); + +#include "../gcc.c-torture/execute/builtins/chk.h" + +char buf1[20]; +char *q; + +void +test (int arg, ...) +{ + char *p = &buf1[10]; + + *p = 0; + strncat (p, "abcdefg", 9); + *p = 0; + strncat (p, "abcdefghi", 9); + *p = 0; + strncat (p, "abcdefghij", 9); + *p = 0; + strncat (p, "abcdefghi", 10); + *p = 0; + strncat (p, "abcdefghij", 10); /* { dg-warning "will always overflow" } */ + *p = 0; + strncat (p, "abcdefgh", 11); + *p = 0; + strncat (p, "abcdefghijkl", 11); /* { dg-warning "will always overflow" } */ + *p = 0; + strncat (p, q, 9); + *p = 0; + strncat (p, q, 10); /* { dg-warning "might overflow" } */ + *p = 0; + strncat (p, q, 11); /* { dg-warning "might overflow" } */ +} |