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print informative message if lambda encountered with no host VM

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Per a recent bug report in the hello-ios project, we found that
bootimage-generator would abort with no explanation if it encountered
a lambda invocation and the `-hostvm` option was unspecified.  This
commit ensures that a helpful message is printed before exiting.
This commit is contained in:
Joel Dice 2016-09-16 13:55:09 -06:00
parent cbcc15bf74
commit 650941cdf5
1 changed files with 8 additions and 0 deletions
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8
src/compile.cpp
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@ -5140,6 +5140,14 @@ loop:
PROTECT(t, bootstrapArray);
if (isLambda(t, c->loader(), bootstrapArray, invocation)) {
if (bc->hostVM == 0) {
throwNew(t,
GcVirtualMachineError::Type,
"lambda expression encountered, but host VM is not "
"available; use -hostvm option to bootimage-generator to "
"fix this");
}
JNIEnv* e;
if (bc->hostVM->vtable->AttachCurrentThread(bc->hostVM, &e, 0) == 0) {
e->vtable->PushLocalFrame(e, 256);