diff options
Diffstat (limited to 'lib/Transforms/Instrumentation/SanitizerCoverage.cpp')
| -rw-r--r-- | lib/Transforms/Instrumentation/SanitizerCoverage.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/Transforms/Instrumentation/SanitizerCoverage.cpp b/lib/Transforms/Instrumentation/SanitizerCoverage.cpp index 18c6ceb3331..21ad41c47f6 100644 --- a/lib/Transforms/Instrumentation/SanitizerCoverage.cpp +++ b/lib/Transforms/Instrumentation/SanitizerCoverage.cpp @@ -377,7 +377,12 @@ bool SanitizerCoverageModule::runOnModule(Module &M) { Constant *SanCovLowestStackConstant = M.getOrInsertGlobal(SanCovLowestStackName, IntptrTy); - SanCovLowestStack = cast<GlobalVariable>(SanCovLowestStackConstant); + SanCovLowestStack = dyn_cast<GlobalVariable>(SanCovLowestStackConstant); + if (!SanCovLowestStack) { + C->emitError(StringRef("'") + SanCovLowestStackName + + "' should not be declared by the user"); + return true; + } SanCovLowestStack->setThreadLocalMode( GlobalValue::ThreadLocalMode::InitialExecTLSModel); if (Options.StackDepth && !SanCovLowestStack->isDeclaration()) |