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Introduce copy_bytes for writing into bytecode

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Protects memcpy from nullptr sources, which triggers failures in GCC's
UB sanitizer.
This commit is contained in:
Justin Viiret
2015-11-12 15:27:11 +11:00
committed by Matthew Barr
parent cf3ddd9e88
commit 2a2576e907
5 changed files with 51 additions and 48 deletions
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5
src/nfagraph/ng_lbr.cpp
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@@ -98,8 +98,7 @@ void fillNfa(NFA *nfa, lbr_common *c, ReportID report, const depth &repeatMin,
info->packedCtrlSize = rsi.packedCtrlSize;
info->horizon = rsi.horizon;
info->minPeriod = minPeriod;
memcpy(&info->packedFieldSizes, rsi.packedFieldSizes.data(),
byte_length(rsi.packedFieldSizes));
copy_bytes(&info->packedFieldSizes, rsi.packedFieldSizes);
info->patchCount = rsi.patchCount;
info->patchSize = rsi.patchSize;
info->encodingSize = rsi.encodingSize;
@@ -122,7 +121,7 @@ void fillNfa(NFA *nfa, lbr_common *c, ReportID report, const depth &repeatMin,
nfa->length = verify_u32(len);
info->length = verify_u32(sizeof(RepeatInfo)
+ sizeof(u64a) * (rsi.patchSize + 1));
memcpy(table, rsi.table.data(), byte_length(rsi.table));
copy_bytes(table, rsi.table);
}
}