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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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11
src/nfa/goughcompile.cpp
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@@ -1136,16 +1136,11 @@ aligned_unique_ptr<NFA> goughCompile(raw_som_dfa &raw, u8 somPrecision,
gough_dfa->length = gough_size;
/* copy in blocks */
memcpy((u8 *)gough_dfa.get() + edge_prog_offset, &edge_blocks[0],
byte_length(edge_blocks));
copy_bytes((u8 *)gough_dfa.get() + edge_prog_offset, edge_blocks);
if (top_prog_offset) {
memcpy((u8 *)gough_dfa.get() + top_prog_offset, &top_blocks[0],
byte_length(top_blocks));
}
if (!temp_blocks.empty()) {
memcpy((u8 *)gough_dfa.get() + prog_base_offset, &temp_blocks[0],
byte_length(temp_blocks));
copy_bytes((u8 *)gough_dfa.get() + top_prog_offset, top_blocks);
}
copy_bytes((u8 *)gough_dfa.get() + prog_base_offset, temp_blocks);
return gough_dfa;
}