From: Dan Gohman Date: Mon, 2 Aug 2010 23:06:43 +0000 (+0000) Subject: Add a lint check for indirectbr with no successors. X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=a8afb2a623b8644f9460be66d99c073579e23df0;p=oota-llvm.git Add a lint check for indirectbr with no successors. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110074 91177308-0d34-0410-b5e6-96231b3b80d8 --- diff --git a/lib/Analysis/Lint.cpp b/lib/Analysis/Lint.cpp index 949bbbd8b6c..5624430332a 100644 --- a/lib/Analysis/Lint.cpp +++ b/lib/Analysis/Lint.cpp @@ -519,6 +519,9 @@ void Lint::visitVAArgInst(VAArgInst &I) { void Lint::visitIndirectBrInst(IndirectBrInst &I) { visitMemoryReference(I, I.getAddress(), ~0u, 0, 0, MemRef::Branchee); + + Assert1(I.getNumDestinations() != 0, + "Undefined behavior: indirectbr with no destinations", &I); } void Lint::visitExtractElementInst(ExtractElementInst &I) { diff --git a/test/Other/lint.ll b/test/Other/lint.ll index dee3d11d2fb..fcef7ee2d57 100644 --- a/test/Other/lint.ll +++ b/test/Other/lint.ll @@ -161,5 +161,7 @@ declare i32 @nonstruct_callee() nounwind define void @struct_caller() nounwind { entry: call %struct bitcast (i32 ()* @foo to %struct ()*)() - ret void + + ; CHECK: Undefined behavior: indirectbr with no destinations + indirectbr i8* null, [] }