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| author | Jakub Jelinek <jakub@redhat.com> | 2009-11-09 20:40:56 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2009-11-09 20:40:56 +0100 |
| commit | 29a0acd42d75cdcdc2dc3732bb609344d223eb3c (patch) | |
| tree | c20d9ed712eae64095f043eb5ae61af5fa13a73a | |
| parent | 633f54d0411e23060079ba0e59f857e48aa1c4f7 (diff) | |
| download | gcc-29a0acd42d75cdcdc2dc3732bb609344d223eb3c.zip gcc-29a0acd42d75cdcdc2dc3732bb609344d223eb3c.tar.gz gcc-29a0acd42d75cdcdc2dc3732bb609344d223eb3c.tar.bz2 | |
re PR middle-end/40946 (Spurious array subscript is above bounds warning)
PR middle-end/40946
* gcc.dg/pr40946.c: New test.
From-SVN: r154047
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr40946.c | 33 |
2 files changed, 38 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 9192268..a37b0b1 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2009-11-09 Jakub Jelinek <jakub@redhat.com> + + PR middle-end/40946 + * gcc.dg/pr40946.c: New test. + 2009-11-09 Jason Merrill <jason@redhat.com> PR c++/41972 diff --git a/gcc/testsuite/gcc.dg/pr40946.c b/gcc/testsuite/gcc.dg/pr40946.c new file mode 100644 index 0000000..3fd804e --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr40946.c @@ -0,0 +1,33 @@ +/* PR middle-end/40946 */ +/* { dg-do compile } */ +/* { dg-options "-O2 -Wall" } */ + +struct A +{ + unsigned char a1[8]; + unsigned short a2, a3, a4, a5, a6, a7; +}; + +int bar (void *, const char *, int); +char *foo (void *, int); + +char * +baz (const char *x, const char *y) +{ + int a = sizeof (struct A) + 2 * (__builtin_strlen (y) + + __builtin_strlen (x) + 24) + 16; + struct A *b = __builtin_malloc (a); + char *c; + int d; + + b->a4 = sizeof (struct A); + c = ((char *) b) + b->a4; + d = ((char *) b) + a - c; + b->a2 = b->a3 = (unsigned short) bar (c, y, d); /* { dg-bogus "array subscript is above array bounds" } */ + c += b->a2; + d = ((char *) b) + a - c; + b->a7 = b->a4 + b->a2; + b->a5 = b->a6 = (unsigned short) bar (c, x, d); + c = foo (b, a); + return c; +} |