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-rw-r--r--llvm/lib/Target/ARM/MCTargetDesc/ARMAsmBackend.cpp5
1 files changed, 4 insertions, 1 deletions
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMAsmBackend.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMAsmBackend.cpp
index 93ec46df07f..7acd9cc4d30 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMAsmBackend.cpp
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMAsmBackend.cpp
@@ -742,8 +742,11 @@ void ARMAsmBackend::applyFixup(const MCFixup &Fixup, char *Data,
// Used to point to big endian bytes.
unsigned FullSizeBytes;
- if (!IsLittleEndian)
+ if (!IsLittleEndian) {
FullSizeBytes = getFixupKindContainerSizeBytes(Fixup.getKind());
+ assert((Offset + FullSizeBytes) <= DataSize && "Invalid fixup size!");
+ assert(NumBytes <= FullSizeBytes && "Invalid fixup size!");
+ }
// For each byte of the fragment that the fixup touches, mask in the bits from
// the fixup value. The Value has been "split up" into the appropriate
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