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| author | Jakub Jelinek <jakub@gcc.gnu.org> | 2009-10-19 09:39:43 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2009-10-19 09:39:43 +0200 |
| commit | 2d3fc6aafc3730a15e3facad442695ced8b22925 (patch) | |
| tree | 06314543c91eececa6bcd3808dfbc85a49ff743d /gcc | |
| parent | 69925f6ce8bf646a4a8fcf50b0deb77b207fb693 (diff) | |
| download | gcc-2d3fc6aafc3730a15e3facad442695ced8b22925.zip gcc-2d3fc6aafc3730a15e3facad442695ced8b22925.tar.gz gcc-2d3fc6aafc3730a15e3facad442695ced8b22925.tar.bz2 | |
cfgexpand.c (expand_debug_expr): Fail if bitpos < 0 for non-MEM op0.
* cfgexpand.c (expand_debug_expr): Fail if bitpos < 0 for non-MEM
op0.
* gcc.dg/debug/vta-3.c: New test.
From-SVN: r152972
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/cfgexpand.c | 3 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/debug/vta-3.c | 17 |
4 files changed, 30 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 706052d..a8f7148 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,4 +1,9 @@ -2009-10-17 Andy Hutchinson <hutchinsonandy@gcc.gnu.org> +2009-10-19 Jakub Jelinek <jakub@redhat.com> + + * cfgexpand.c (expand_debug_expr): Fail if bitpos < 0 for non-MEM + op0. + +2009-10-17 Andy Hutchinson <hutchinsonandy@gcc.gnu.org> PR middle-end/41738 * optabs.c (expand_binop): Make mode of shift count expression mode diff --git a/gcc/cfgexpand.c b/gcc/cfgexpand.c index acd70c1..8c7c881 100644 --- a/gcc/cfgexpand.c +++ b/gcc/cfgexpand.c @@ -2593,6 +2593,9 @@ expand_debug_expr (tree exp) if (bitpos == 0 && mode == GET_MODE (op0)) return op0; + if (bitpos < 0) + return NULL; + if ((bitpos % BITS_PER_UNIT) == 0 && bitsize == GET_MODE_BITSIZE (mode1)) { diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 168123f..d4d46529 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2009-10-19 Jakub Jelinek <jakub@redhat.com> + + * gcc.dg/debug/vta-3.c: New test. + 2009-10-17 Eric Botcazou <ebotcazou@adacore.com> * gnat.dg/nested_proc.adb: Rename into... diff --git a/gcc/testsuite/gcc.dg/debug/vta-3.c b/gcc/testsuite/gcc.dg/debug/vta-3.c new file mode 100644 index 0000000..7d014f1 --- /dev/null +++ b/gcc/testsuite/gcc.dg/debug/vta-3.c @@ -0,0 +1,17 @@ +/* { dg-do compile } */ + +int +foo (void) +{ + union { char e[8]; int i; } a, b; + char *c, *d; + unsigned int i; + c = a.e; + d = &b.e[sizeof (int) - 1]; + for (i = 0; i < sizeof (int); i++) + { + *d = *c++; + --d; + } + return b.i; +} |