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| author | Richard Biener <rguenther@suse.de> | 2015-09-16 14:26:04 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2015-09-16 14:26:04 +0000 |
| commit | 486bc8471fd5de49262f2b36a17b1be5915436e1 (patch) | |
| tree | a1ad851e4c94d70827a9d1e78a39a7e4e7de0435 | |
| parent | b0463d3db4c5dffff7c0edbbeb48a564a8476787 (diff) | |
| download | gcc-486bc8471fd5de49262f2b36a17b1be5915436e1.zip gcc-486bc8471fd5de49262f2b36a17b1be5915436e1.tar.gz gcc-486bc8471fd5de49262f2b36a17b1be5915436e1.tar.bz2 | |
re PR middle-end/67271 (ICE with -O1,2,3 on darwin14.5 x86_64)
2015-09-16 Richard Biener <rguenther@suse.de>
PR middle-end/67271
* fold-const.c (native_encode_expr): Bail out on bogus offsets.
* gcc.dg/pr67271.c: New testcase.
From-SVN: r227825
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/fold-const.c | 4 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr67271.c | 12 |
4 files changed, 26 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 085de31..2ec6aef 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2015-09-16 Richard Biener <rguenther@suse.de> + + PR middle-end/67271 + * fold-const.c (native_encode_expr): Bail out on bogus offsets. + 2015-09-16 Eric Botcazou <ebotcazou@adacore.com> * tree-ssa-sccvn.c (ao_ref_init_from_vn_reference): Use offset_int for diff --git a/gcc/fold-const.c b/gcc/fold-const.c index fd1c87e..1521450 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -7110,6 +7110,10 @@ native_encode_string (const_tree expr, unsigned char *ptr, int len, int off) int native_encode_expr (const_tree expr, unsigned char *ptr, int len, int off) { + /* We don't support starting at negative offset and -1 is special. */ + if (off < -1) + return 0; + switch (TREE_CODE (expr)) { case INTEGER_CST: diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 945db71..87bcebf 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2015-09-16 Richard Biener <rguenther@suse.de> + + PR middle-end/67271 + * gcc.dg/pr67271.c: New testcase. + 2015-09-16 Eric Botcazou <ebotcazou@adacore.com> * gnat.dg/opt49.adb: New test. diff --git a/gcc/testsuite/gcc.dg/pr67271.c b/gcc/testsuite/gcc.dg/pr67271.c new file mode 100644 index 0000000..b6988a3 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr67271.c @@ -0,0 +1,12 @@ +/* { dg-do compile } */ +/* { dg-options "-O" } */ + +extern long int labs (long int j); +int +main () +{ + long *a = (long *)"empty"; + int i = 1441516387; + a[i] = labs (a[i]); + return 0; +} |