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| author | J"orn Rennecke <amylaar@cygnus.co.uk> | 2000-01-04 08:36:51 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2000-01-04 01:36:51 -0700 |
| commit | c565a6b7cb4b31b81476c061eab530bc289cc353 (patch) | |
| tree | 624826dd12515b4c4ce724fed3f35287e6f9c0ab /gcc/fold-const.c | |
| parent | 70dec765ec4e331c550a3732f09acd98954c8967 (diff) | |
| download | gcc-c565a6b7cb4b31b81476c061eab530bc289cc353.zip gcc-c565a6b7cb4b31b81476c061eab530bc289cc353.tar.gz gcc-c565a6b7cb4b31b81476c061eab530bc289cc353.tar.bz2 | |
* fold-const.c (make_range): Don't try to reverse an unbounded range.
From-SVN: r31197
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 8f94161..c540b19 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -1,5 +1,5 @@ /* Fold a constant sub-tree into a single node for C-compiler - Copyright (C) 1987, 88, 92-98, 1999 Free Software Foundation, Inc. + Copyright (C) 1987, 88, 92-98, 1999, 2000 Free Software Foundation, Inc. This file is part of GNU CC. @@ -3315,9 +3315,10 @@ make_range (exp, pin_p, plow, phigh) in_p = n_in_p, low = n_low, high = n_high; - /* If the high bound is missing, reverse the range so it - goes from zero to the low bound minus 1. */ - if (high == 0) + /* If the high bound is missing, but we + have a low bound, reverse the range so + it goes from zero to the low bound minus 1. */ + if (high == 0 && low) { in_p = ! in_p; high = range_binop (MINUS_EXPR, NULL_TREE, low, 0, |