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| author | Ian Lance Taylor <ian@gcc.gnu.org> | 2014-08-05 02:58:15 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2014-08-05 02:58:15 +0000 |
| commit | 6e4f9a957e22aaed58cf628e34d420fdfa21a3d8 (patch) | |
| tree | fa207e6e1795c5257fbe25dc8ef6be5f219245e2 /gcc/loop-unroll.c | |
| parent | cb7b4e77170a356818298d5e7fa2f9db747b497f (diff) | |
| download | gcc-6e4f9a957e22aaed58cf628e34d420fdfa21a3d8.zip gcc-6e4f9a957e22aaed58cf628e34d420fdfa21a3d8.tar.gz gcc-6e4f9a957e22aaed58cf628e34d420fdfa21a3d8.tar.bz2 | |
re PR go/61308 (gccgo: ICE in Expression::check_bounds [GoSmith])
PR go/61308
PR go/61866
compiler: Don't cast index expr to int before bounds check.
This fixes http://gcc.gnu.org/PR61866 : on a 32-bit system,
casting an int64 index to int drops the upper 32 bits of the
value, and thus can cause an out-of-range index to appear to
be in range.
This undoes part of change 1318:fa6e0c716dba
(https://codereview.appspot.com/104610044) and therefore
breaks http://gcc.gnu.org/PR61308 again. I have a separate
patch for that (http://codereview.appspot.com/122020043). In
addition to undoing part of that change, this patch adds code
to avoid a compiler crash. This changes PR61308 from a
compiler crash to an incorrect error message.
From-SVN: r213616
Diffstat (limited to 'gcc/loop-unroll.c')
0 files changed, 0 insertions, 0 deletions