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llvm-c: Return NULL from LLVMGetFirstTarget instead of asserting

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If no targets are registered, LLVMGetFirstTarget currently fails with
an assertion. This patch makes it return NULL instead, similarly to
how LLVMGetNextTarget would.

Patch by Peter Zotov

Differential Revision: http://llvm-reviews.chandlerc.com/D1908



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192878 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anders Waldenborg 2013-10-17 10:25:24 +00:00
parent 4ef1999d61
commit 2fee43f9b2
1 changed files with 6 additions and 2 deletions
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8
lib/Target/TargetMachineC.cpp
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@ -60,8 +60,12 @@ inline LLVMTargetRef wrap(const Target * P) {
}
LLVMTargetRef LLVMGetFirstTarget() {
const Target* target = &*TargetRegistry::begin();
return wrap(target);
if(TargetRegistry::begin() == TargetRegistry::end()) {
return NULL;
}
const Target* target = &*TargetRegistry::begin();
return wrap(target);
}
LLVMTargetRef LLVMGetNextTarget(LLVMTargetRef T) {
return wrap(unwrap(T)->getNext());