http://llvm.org/bugs/show_bug.cgi?id=12197
Bug #: 12197
Summary: JIT::getPointerToFunctionOrStub() return illegal stub
in non-lazy case
Product: libraries
Version: trunk
Platform: PC
OS/Version: All
Status: NEW
Severity: normal
Priority: P
Component: Target-Independent JIT
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Classification: Unclassified
When calling JIT::getPointerToFunctionOrStub on a function which has no global
mapping yet, a stub is created by calling getLazyFunctionStub on the
JITResolver.
If the JIT is non-lazy, this call creates a stub jumping to 0x0, and adds the
function to the pending functions list, but this list is not processed before
returning the (still illegal) stub.
Reproduction: In the HowToUseJIT example, add a call to
EE->getPointerToFunctionOrStub before the EE->runFunction call.
diff --git a/examples/HowToUseJIT/HowToUseJIT.cpp
b/examples/HowToUseJIT/HowToUseJIT.cpp
index 92b2860..662ed22 100644
--- a/examples/HowToUseJIT/HowToUseJIT.cpp
+++ b/examples/HowToUseJIT/HowToUseJIT.cpp
@@ -123,4 +123,5 @@ int main() {
// Call the `foo' function with no arguments:
std::vector<GenericValue> noargs;
+ EE->getPointerToFunctionOrStub(FooF);
GenericValue gv = EE->runFunction(FooF, noargs);
--
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