diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/Wstringop-overflow-18.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/Wstringop-overflow-18.c | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/Wstringop-overflow-18.c b/gcc/testsuite/gcc.dg/Wstringop-overflow-18.c new file mode 100644 index 00000000000..7866b585b84 --- /dev/null +++ b/gcc/testsuite/gcc.dg/Wstringop-overflow-18.c @@ -0,0 +1,239 @@ +/* PR middle-end/91977 - missing -Wstringop-overflow on memcpy into + a pointer plus offset + { dg-do compile } + { dg-options "-O2 -Wall -Wno-array-bounds -ftrack-macro-expansion=0" } */ + +#define NOIPA __attribute__ ((noipa)) +#define CONCAT(a, b) a ## b +#define CAT(a, b) CONCAT (a, b) + +#define S3 "123" +#define S4 "1234" + +char a1[1], a2[2], a3[3], a4[4], a5[5], a6[6], a7[7], a8[8]; +char b1[1], b2[2], b3[3], b4[4], b5[5], b6[6], b7[7], b8[8]; + +#define T(dst, src, off, n) \ + NOIPA void CAT (test_on_line_, __LINE__) (const void *s) \ + { \ + __builtin_memcpy (dst + off, src, n); \ + } typedef void dummy_type + +T (a4, s, 0, 1); +T (a4, s, 1, 1); +T (a4, s, 2, 1); +T (a4, s, 3, 1); +T (a4, s, 4, 1); // { dg-warning "writing 1 byte into a region of size 0" } + +T (a4, s, 0, 2); +T (a4, s, 1, 2); +T (a4, s, 2, 2); +T (a4, s, 3, 2); // { dg-warning "writing 2 bytes into a region of size 1" } +T (a4, s, 4, 2); // { dg-warning "writing 2 bytes into a region of size 0" } + +T (a4, s, 0, 3); +T (a4, s, 1, 3); +T (a4, s, 2, 3); // { dg-warning "writing 3 bytes into a region of size 2" } +T (a4, s, 3, 3); // { dg-warning "writing 3 bytes into a region of size 1" } +T (a4, s, 4, 3); // { dg-warning "writing 3 bytes into a region of size 0" } + +T (a4, s, 0, 4); +T (a4, s, 1, 4); // { dg-warning "writing 4 bytes into a region of size 3" } +T (a4, s, 2, 4); // { dg-warning "writing 4 bytes into a region of size 2" } +T (a4, s, 3, 4); // { dg-warning "writing 4 bytes into a region of size 1" } +T (a4, s, 4, 4); // { dg-warning "writing 4 bytes into a region of size 0" } + +T (a7, s, 3, 3); +T (a7, s, 4, 3); +T (a7, s, 5, 3); // { dg-warning "writing 3 bytes into a region of size 2" } +T (a7, s, 6, 3); // { dg-warning "writing 3 bytes into a region of size 1" } +T (a7, s, 7, 3); // { dg-warning "writing 3 bytes into a region of size 0" } + +T (a7, s, 3, 4); +T (a7, s, 4, 4); // { dg-warning "writing 4 bytes into a region of size 3" } +T (a7, s, 5, 4); // { dg-warning "writing 4 bytes into a region of size 2" } +T (a7, s, 6, 4); // { dg-warning "writing 4 bytes into a region of size 1" } +T (a7, s, 7, 4); // { dg-warning "writing 4 bytes into a region of size 0" } + +T (a7, s, 1, 6); +T (a7, s, 2, 6); // { dg-warning "writing 6 bytes into a region of size 5" } +T (a7, s, 3, 6); // { dg-warning "writing 6 bytes into a region of size 4" } +T (a7, s, 4, 6); // { dg-warning "writing 6 bytes into a region of size 3" } +T (a7, s, 5, 6); // { dg-warning "writing 6 bytes into a region of size 2" } +T (a7, s, 6, 6); // { dg-warning "writing 6 bytes into a region of size 1" } +T (a7, s, 7, 6); // { dg-warning "writing 6 bytes into a region of size 0" } + +T (a8, s, 1, 7); +T (a8, s, 2, 7); // { dg-warning "writing 7 bytes into a region of size 6" } +T (a8, s, 3, 7); // { dg-warning "writing 7 bytes into a region of size 5" } +T (a8, s, 4, 7); // { dg-warning "writing 7 bytes into a region of size 4" } +T (a8, s, 5, 7); // { dg-warning "writing 7 bytes into a region of size 3" } +T (a8, s, 6, 7); // { dg-warning "writing 7 bytes into a region of size 2" } +T (a8, s, 7, 7); // { dg-warning "writing 7 bytes into a region of size 1" } +T (a8, s, 8, 7); // { dg-warning "writing 7 bytes into a region of size 0" } + +#undef T +#define T(dst, src, off, n) \ + NOIPA void CAT (test_on_line_, __LINE__) (const void *s) \ + { \ + char *d = dst + off; \ + __builtin_memcpy (d, src, n); \ + } typedef void dummy_type + +T (a4, s, 0, 1); +T (a4, s, 1, 1); +T (a4, s, 2, 1); +T (a4, s, 3, 1); +T (a4, s, 4, 1); // { dg-warning "writing 1 byte into a region of size 0" } + +T (a4, s, 0, 2); +T (a4, s, 1, 2); +T (a4, s, 2, 2); +T (a4, s, 3, 2); // { dg-warning "writing 2 bytes into a region of size 1" } +T (a4, s, 4, 2); // { dg-warning "writing 2 bytes into a region of size 0" } + +T (a4, s, 0, 3); +T (a4, s, 1, 3); +T (a4, s, 2, 3); // { dg-warning "writing 3 bytes into a region of size 2" } +T (a4, s, 3, 3); // { dg-warning "writing 3 bytes into a region of size 1" } +T (a4, s, 4, 3); // { dg-warning "writing 3 bytes into a region of size 0" } + +T (a4, s, 0, 4); +T (a4, s, 1, 4); // { dg-warning "writing 4 bytes into a region of size 3" } +T (a4, s, 2, 4); // { dg-warning "writing 4 bytes into a region of size 2" } +T (a4, s, 3, 4); // { dg-warning "writing 4 bytes into a region of size 1" } +T (a4, s, 4, 4); // { dg-warning "writing 4 bytes into a region of size 0" } + +T (a7, s, 3, 3); +T (a7, s, 4, 3); +T (a7, s, 5, 3); // { dg-warning "writing 3 bytes into a region of size 2" } +T (a7, s, 6, 3); // { dg-warning "writing 3 bytes into a region of size 1" } +T (a7, s, 7, 3); // { dg-warning "writing 3 bytes into a region of size 0" } + +T (a7, s, 3, 4); +T (a7, s, 4, 4); // { dg-warning "writing 4 bytes into a region of size 3" } +T (a7, s, 5, 4); // { dg-warning "writing 4 bytes into a region of size 2" } +T (a7, s, 6, 4); // { dg-warning "writing 4 bytes into a region of size 1" } +T (a7, s, 7, 4); // { dg-warning "writing 4 bytes into a region of size 0" } + +T (a7, s, 1, 6); +T (a7, s, 2, 6); // { dg-warning "writing 6 bytes into a region of size 5" } +T (a7, s, 3, 6); // { dg-warning "writing 6 bytes into a region of size 4" } +T (a7, s, 4, 6); // { dg-warning "writing 6 bytes into a region of size 3" } +T (a7, s, 5, 6); // { dg-warning "writing 6 bytes into a region of size 2" } +T (a7, s, 6, 6); // { dg-warning "writing 6 bytes into a region of size 1" } +T (a7, s, 7, 6); // { dg-warning "writing 6 bytes into a region of size 0" } + +#undef T +#define T(dst, src, init, off, n) \ + NOIPA void CAT (test_on_line_, __LINE__) (void) \ + { \ + __builtin_strcpy (src, init); \ + char *d = dst + off; \ + __builtin_memcpy (d, src, n); \ + } typedef void dummy_type + + +T (a6, b6, S4, 0, 4); +T (a6, b6, S4, 1, 4); +T (a6, b6, S4, 2, 4); +T (a6, b6, S4, 3, 4); // { dg-warning "writing 4 bytes into a region of size 3" } */ +T (a6, b6, S4, 4, 4); // { dg-warning "writing 4 bytes into a region of size 2" } */ +T (a6, b6, S4, 5, 4); // { dg-warning "writing 4 bytes into a region of size 1" } */ +T (a6, b6, S4, 6, 4); // { dg-warning "writing 4 bytes into a region of size 0" } */ + +T (a7, b7, S4, 0, 4); +T (a7, b7, S4, 1, 4); +T (a7, b7, S4, 2, 4); +T (a7, b7, S4, 3, 4); +T (a7, b7, S4, 4, 4); // { dg-warning "writing 4 bytes into a region of size 3" } */ +T (a7, b7, S4, 5, 4); // { dg-warning "writing 4 bytes into a region of size 2" } */ +T (a7, b7, S4, 6, 4); // { dg-warning "writing 4 bytes into a region of size 1" } */ +T (a7, b7, S4, 7, 4); // { dg-warning "writing 4 bytes into a region of size 0" } */ + +T (a8, b4, S3, 0, 4); +T (a8, b4, S3, 1, 4); +T (a8, b4, S3, 2, 4); +T (a8, b4, S3, 3, 4); +T (a8, b4, S3, 4, 4); +T (a8, b4, S3, 5, 4); // { dg-warning "writing 4 bytes into a region of size 3" } */ +T (a8, b4, S3, 6, 4); // { dg-warning "writing 4 bytes into a region of size 2" } */ +T (a8, b4, S3, 7, 4); // { dg-warning "writing 4 bytes into a region of size 1" } */ +T (a8, b4, S3, 8, 4); // { dg-warning "writing 4 bytes into a region of size 0" } */ + +T (a8, b8, S3, 0, 4); +T (a8, b8, S3, 1, 4); +T (a8, b8, S3, 2, 4); +T (a8, b8, S3, 3, 4); +T (a8, b8, S3, 4, 4); +T (a8, b8, S3, 5, 4); // { dg-warning "writing 4 bytes into a region of size 3" } */ +T (a8, b8, S3, 6, 4); // { dg-warning "writing 4 bytes into a region of size 2" } */ +T (a8, b8, S3, 7, 4); // { dg-warning "writing 4 bytes into a region of size 1" } */ +T (a8, b8, S3, 8, 4); // { dg-warning "writing 4 bytes into a region of size 0" } */ + +T (a8, b8, S4, 0, 4); +T (a8, b8, S4, 1, 4); +T (a8, b8, S4, 2, 4); +T (a8, b8, S4, 3, 4); +T (a8, b8, S4, 4, 4); +T (a8, b8, S4, 5, 4); // { dg-warning "writing 4 bytes into a region of size 3" } */ +T (a8, b8, S4, 6, 4); // { dg-warning "writing 4 bytes into a region of size 2" } */ +T (a8, b8, S4, 7, 4); // { dg-warning "writing 4 bytes into a region of size 1" } */ +T (a8, b8, S4, 8, 4); // { dg-warning "writing 4 bytes into a region of size 0" } */ + +T (a8, b8, S4, 0, 5); +T (a8, b8, S4, 1, 5); +T (a8, b8, S4, 2, 5); +T (a8, b8, S4, 3, 5); +T (a8, b8, S4, 4, 5); // { dg-warning "writing 5 bytes into a region of size 4" } */ +T (a8, b8, S4, 5, 5); // { dg-warning "writing 5 bytes into a region of size 3" } */ +T (a8, b8, S4, 6, 5); // { dg-warning "writing 5 bytes into a region of size 2" } */ +T (a8, b8, S4, 7, 5); // { dg-warning "writing 5 bytes into a region of size 1" } */ +T (a8, b8, S4, 8, 5); // { dg-warning "writing 5 bytes into a region of size 0" } */ + +T (a8, b8, S4, 0, 6); +T (a8, b8, S4, 1, 6); +T (a8, b8, S4, 2, 6); +T (a8, b8, S4, 3, 6); // { dg-warning "writing 6 bytes into a region of size 5" } */ +T (a8, b8, S4, 4, 6); // { dg-warning "writing 6 bytes into a region of size 4" } */ +T (a8, b8, S4, 5, 6); // { dg-warning "writing 6 bytes into a region of size 3" } */ +T (a8, b8, S4, 6, 6); // { dg-warning "writing 6 bytes into a region of size 2" } */ +T (a8, b8, S4, 7, 6); // { dg-warning "writing 6 bytes into a region of size 1" } */ +T (a8, b8, S4, 8, 6); // { dg-warning "writing 6 bytes into a region of size 0" } */ + + +#undef T +#define T(dst, init, off, n) \ + NOIPA void CAT (test_on_line_, __LINE__) (char *src) \ + { \ + __builtin_strcpy (src, init); \ + char *d = dst + off; \ + __builtin_memcpy (d, src, n); \ + } typedef void dummy_type + +T (a6, S4, 0, 4); +T (a6, S4, 1, 4); +T (a6, S4, 2, 4); +T (a6, S4, 3, 4); // { dg-warning "writing 4 bytes into a region of size 3" } */ +T (a6, S4, 4, 4); // { dg-warning "writing 4 bytes into a region of size 2" } */ +T (a6, S4, 5, 4); // { dg-warning "writing 4 bytes into a region of size 1" } */ +T (a6, S4, 6, 4); // { dg-warning "writing 4 bytes into a region of size 0" } */ + +T (a7, S4, 0, 4); +T (a7, S4, 1, 4); +T (a7, S4, 2, 4); +T (a7, S4, 3, 4); +T (a7, S4, 4, 4); // { dg-warning "writing 4 bytes into a region of size 3" } */ +T (a7, S4, 5, 4); // { dg-warning "writing 4 bytes into a region of size 2" } */ +T (a7, S4, 6, 4); // { dg-warning "writing 4 bytes into a region of size 1" } */ +T (a7, S4, 7, 4); // { dg-warning "writing 4 bytes into a region of size 0" } */ + +T (a8, S3, 0, 4); +T (a8, S3, 1, 4); +T (a8, S3, 2, 4); +T (a8, S3, 3, 4); +T (a8, S3, 4, 4); +T (a8, S3, 5, 4); // { dg-warning "writing 4 bytes into a region of size 3" } */ +T (a8, S3, 6, 4); // { dg-warning "writing 4 bytes into a region of size 2" } */ +T (a8, S3, 7, 4); // { dg-warning "writing 4 bytes into a region of size 1" } */ +T (a8, S3, 8, 4); // { dg-warning "writing 4 bytes into a region of size 0" } */ |