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| author | Marek Polacek <polacek@redhat.com> | 2013-12-03 12:11:36 +0000 |
|---|---|---|
| committer | Marek Polacek <mpolacek@gcc.gnu.org> | 2013-12-03 12:11:36 +0000 |
| commit | ddc923b52d28df9ed6e5d50138593a31da3e519a (patch) | |
| tree | b8d4def2131b95da10e3344eaeb8be439020791c /gcc/calls.c | |
| parent | da0fc4547a3377430cbc522c4676cd1f707f32d2 (diff) | |
| download | gcc-ddc923b52d28df9ed6e5d50138593a31da3e519a.zip gcc-ddc923b52d28df9ed6e5d50138593a31da3e519a.tar.gz gcc-ddc923b52d28df9ed6e5d50138593a31da3e519a.tar.bz2 | |
re PR middle-end/56344 (ICE for program with very large structs returned by value)
PR middle-end/56344
* calls.c (expand_call): Disallow passing huge arguments
by value.
From-SVN: r205628
Diffstat (limited to 'gcc/calls.c')
| -rw-r--r-- | gcc/calls.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/calls.c b/gcc/calls.c index 7d6327f..3963bc2 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -3045,6 +3045,15 @@ expand_call (tree exp, rtx target, int ignore) { rtx before_arg = get_last_insn (); + /* We don't allow passing huge (> 2^30 B) arguments + by value. It would cause an overflow later on. */ + if (adjusted_args_size.constant + >= (1 << (HOST_BITS_PER_INT - 2))) + { + sorry ("passing too large argument on stack"); + continue; + } + if (store_one_arg (&args[i], argblock, flags, adjusted_args_size.var != 0, reg_parm_stack_space) |