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| author | Richard Biener <rguenther@suse.de> | 2017-11-02 08:28:18 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2017-11-02 08:28:18 +0000 |
| commit | a4d758d005722358ce73ac1b31fea68358667e83 (patch) | |
| tree | a29ae71e7c2e948a8d7bc9e9219c90dc1ff37333 /gcc/varasm.c | |
| parent | 30d124e1e6c41c7f08651e9551d702627d2bb5fd (diff) | |
| download | gcc-a4d758d005722358ce73ac1b31fea68358667e83.zip gcc-a4d758d005722358ce73ac1b31fea68358667e83.tar.gz gcc-a4d758d005722358ce73ac1b31fea68358667e83.tar.bz2 | |
re PR c/82765 (ICE at -Os on valid code on x86_64-linux-gnu: in tree_to_shwi, at tree.c:6611)
2017-11-02 Richard Biener <rguenther@suse.de>
PR middle-end/82765
* varasm.c (decode_addr_const): Make offset HOST_WIDE_INT.
Truncate ARRAY_REF index and element size.
* gcc.dg/pr82765.c: New testcase.
From-SVN: r254337
Diffstat (limited to 'gcc/varasm.c')
| -rw-r--r-- | gcc/varasm.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/gcc/varasm.c b/gcc/varasm.c index 655324e..1b35a99 100644 --- a/gcc/varasm.c +++ b/gcc/varasm.c @@ -2879,7 +2879,7 @@ static void decode_addr_const (tree exp, struct addr_const *value) { tree target = TREE_OPERAND (exp, 0); - int offset = 0; + HOST_WIDE_INT offset = 0; rtx x; while (1) @@ -2893,8 +2893,9 @@ decode_addr_const (tree exp, struct addr_const *value) else if (TREE_CODE (target) == ARRAY_REF || TREE_CODE (target) == ARRAY_RANGE_REF) { - offset += (tree_to_uhwi (TYPE_SIZE_UNIT (TREE_TYPE (target))) - * tree_to_shwi (TREE_OPERAND (target, 1))); + /* Truncate big offset. */ + offset += (TREE_INT_CST_LOW (TYPE_SIZE_UNIT (TREE_TYPE (target))) + * TREE_INT_CST_LOW (TREE_OPERAND (target, 1))); target = TREE_OPERAND (target, 0); } else if (TREE_CODE (target) == MEM_REF |