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| author | Duncan P. N. Exon Smith <dexonsmith@apple.com> | 2014-03-18 22:32:43 +0000 |
|---|---|---|
| committer | Duncan P. N. Exon Smith <dexonsmith@apple.com> | 2014-03-18 22:32:43 +0000 |
| commit | 9ea770ddbb8e883d8c446d19fc15efd7346b23e6 (patch) | |
| tree | 91ded3fac4b916d04e88e29c4653a102b1068d44 /test | |
| parent | 6d1980d0ca715a2ec414c4e2eb31be509f5963ca (diff) | |
| download | llvm-9ea770ddbb8e883d8c446d19fc15efd7346b23e6.tar.gz llvm-9ea770ddbb8e883d8c446d19fc15efd7346b23e6.tar.bz2 llvm-9ea770ddbb8e883d8c446d19fc15efd7346b23e6.tar.xz | |
Fix use_iterator crash in ObjCArc from r203364
The use_iterator redesign in r203364 introduced an increment past the
end of a range in -objc-arc-contract. Added an explicit check for the
end of the range.
<rdar://problem/16333235>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204195 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/ObjCARC/contract-end-of-use-list.ll | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/test/Transforms/ObjCARC/contract-end-of-use-list.ll b/test/Transforms/ObjCARC/contract-end-of-use-list.ll new file mode 100644 index 0000000000..a38cd8a1da --- /dev/null +++ b/test/Transforms/ObjCARC/contract-end-of-use-list.ll @@ -0,0 +1,30 @@ +; RUN: opt -S < %s -objc-arc-expand -objc-arc-contract | FileCheck %s +; Don't crash. Reproducer for a use_iterator bug from r203364. +; rdar://problem/16333235 +target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-apple-darwin13.2.0" + +%struct = type { i8*, i8* } + +; CHECK-LABEL: @foo() { +define internal i8* @foo() { +entry: + %call = call i8* @bar() +; CHECK: %retained1 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call) + %retained1 = call i8* @objc_retain(i8* %call) + %isnull = icmp eq i8* %retained1, null + br i1 %isnull, label %cleanup, label %if.end + +if.end: +; CHECK: %retained2 = call i8* @objc_retain(i8* %retained1) + %retained2 = call i8* @objc_retain(i8* %retained1) + br label %cleanup + +cleanup: + %retval = phi i8* [ %retained2, %if.end ], [ null, %entry ] + ret i8* %retval +} + +declare i8* @bar() + +declare extern_weak i8* @objc_retain(i8*) |