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[lld][MachO] Fix UB after D103006 

ubsan detected:
lld/MachO/SyntheticSections.cpp:636:15: runtime error: null pointer
passed as argument 2, which is declared to never be null
This commit is contained in:
Vitaly Buka 2021-06-14 21:15:54 -07:00
parent 79f9cfbc21
commit b01bfdfda6
1 changed files with 2 additions and 1 deletions
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3
lld/MachO/SyntheticSections.cpp
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@ -633,7 +633,8 @@ void DataInCodeSection::finalizeContents() {
} }
void DataInCodeSection::writeTo(uint8_t *buf) const { void DataInCodeSection::writeTo(uint8_t *buf) const {
memcpy(buf, entries.data(), getRawSize()); if (!entries.empty())
memcpy(buf, entries.data(), getRawSize());
} }
FunctionStartsSection::FunctionStartsSection() FunctionStartsSection::FunctionStartsSection()