http://llvm.org/bugs/show_bug.cgi?id=3334
Summary: Interpreter asserts on out of range shift amount
Product: libraries
Version: trunk
Platform: PC
OS/Version: All
Status: NEW
Severity: normal
Priority: P2
Component: Interpreter
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
When using the Interpreter variety of ExecutionEngine, an out of range shift
amount causes an assert to trigger. However, the same inputs to the regular
ExecutionEngine runs fine (producing an undefined result, but that's OK).
For example, the issue is visible when the following code is compiled with
clang and then executed through llvm:
int main(void) { int i=1; i<<100; return 0; }
When using the Interpreter, the following assert is triggered:
Assertion failed: (shiftAmt <= BitWidth && "Invalid shift amount"), function
shl, file /llvm/include/llvm/ADT/APInt.h, line 681.
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