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author | Marek Polacek <polacek@redhat.com> | 2015-08-14 16:29:38 +0000 |
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committer | Marek Polacek <mpolacek@gcc.gnu.org> | 2015-08-14 16:29:38 +0000 |
commit | e37dcf4530a0801513792535629542f50110b198 (patch) | |
tree | b7f2ae503a14f93402ff942c4ad71e3c3caa817e /gcc | |
parent | 356c32e2f4b9d44140a8333da5381813f9aad516 (diff) | |
download | gcc-e37dcf4530a0801513792535629542f50110b198.zip gcc-e37dcf4530a0801513792535629542f50110b198.tar.gz gcc-e37dcf4530a0801513792535629542f50110b198.tar.bz2 |
re PR middle-end/67133 (ICE at -Os and above on x86_64-linux-gnu in gimple_op, at gimple.h:2274)
PR middle-end/67133
* gimple.c (infer_nonnull_range_by_attribute): Check that the
nonnull argument position is not outside function arguments.
* gcc.dg/torture/pr67133.c: New test.
From-SVN: r226896
Diffstat (limited to 'gcc')
-rw-r--r-- | gcc/ChangeLog | 6 | ||||
-rw-r--r-- | gcc/gimple.c | 11 | ||||
-rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
-rw-r--r-- | gcc/testsuite/gcc.dg/torture/pr67133.c | 34 |
4 files changed, 52 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index afade5d..9d12244 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2015-08-14 Marek Polacek <polacek@redhat.com> + + PR middle-end/67133 + * gimple.c (infer_nonnull_range_by_attribute): Check that the + nonnull argument position is not outside function arguments. + 2015-08-14 Matthew Wahab <matthew.wahab@arm.com> PR target/67143 diff --git a/gcc/gimple.c b/gcc/gimple.c index cca328a..1bfa8c7 100644 --- a/gcc/gimple.c +++ b/gcc/gimple.c @@ -2694,10 +2694,13 @@ infer_nonnull_range_by_attribute (gimple stmt, tree op) /* Now see if op appears in the nonnull list. */ for (tree t = TREE_VALUE (attrs); t; t = TREE_CHAIN (t)) { - int idx = TREE_INT_CST_LOW (TREE_VALUE (t)) - 1; - tree arg = gimple_call_arg (stmt, idx); - if (operand_equal_p (op, arg, 0)) - return true; + unsigned int idx = TREE_INT_CST_LOW (TREE_VALUE (t)) - 1; + if (idx < gimple_call_num_args (stmt)) + { + tree arg = gimple_call_arg (stmt, idx); + if (operand_equal_p (op, arg, 0)) + return true; + } } } } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 9a4cd14..383fb34 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2015-08-14 Marek Polacek <polacek@redhat.com> + + PR middle-end/67133 + * gcc.dg/torture/pr67133.c: New test. + 2015-08-14 Matthew Wahab <matthew.wahab@arm.com> Matthias Klose <doko@debian.org> diff --git a/gcc/testsuite/gcc.dg/torture/pr67133.c b/gcc/testsuite/gcc.dg/torture/pr67133.c new file mode 100644 index 0000000..4eb552e --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr67133.c @@ -0,0 +1,34 @@ +/* { dg-do compile } */ +/* { dg-additional-options "-fisolate-erroneous-paths-attribute" } */ + +int printf (const char *, ...); +int foo (int); + +int a, *b, c; + +static int +fn1 () +{ + if (a) + return (a = 0); + for (; a; ) + a = 0; + return 0; +} + +static int +fn2 (int p) +{ + fn1 (); + c = 0; + if (p) + printf ("%d", 0); + foo (b != &p); + return 0; +} + +void +fn3 () +{ + fn2 (0); +} |