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Merge pull request #10297 from ethereum/linker-fix-spurious-errors-on-underscores

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[linker] Avoid spurious errors on stray underscores in --link input
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chriseth 2020-11-24 12:02:15 +01:00 committed by GitHub
commit f9f9f6251d
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1 changed files with 13 additions and 6 deletions
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19
solc/CommandLineInterface.cpp
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@ -55,6 +55,7 @@
#include <libsolutil/CommonIO.h>
#include <libsolutil/JSON.h>
#include <algorithm>
#include <memory>
#include <boost/filesystem.hpp>
@ -1780,20 +1781,26 @@ bool CommandLineInterface::link()
{
while (it != end && *it != '_') ++it;
if (it == end) break;
if (end - it < placeholderSize)
if (
end - it < placeholderSize ||
*(it + 1) != '_' ||
*(it + placeholderSize - 2) != '_' ||
*(it + placeholderSize - 1) != '_'
)
{
serr() << "Error in binary object file " << src.first << " at position " << (end - src.second.begin()) << endl;
serr() << "Error in binary object file " << src.first << " at position " << (it - src.second.begin()) << endl;
serr() << '"' << string(it, it + min(placeholderSize, static_cast<int>(end - it))) << "\" is not a valid link reference." << endl;
return false;
}
string name(it, it + placeholderSize);
if (librariesReplacements.count(name))
string foundPlaceholder(it, it + placeholderSize);
if (librariesReplacements.count(foundPlaceholder))
{
string hexStr(toHex(librariesReplacements.at(name).asBytes()));
string hexStr(toHex(librariesReplacements.at(foundPlaceholder).asBytes()));
copy(hexStr.begin(), hexStr.end(), it);
}
else
serr() << "Reference \"" << name << "\" in file \"" << src.first << "\" still unresolved." << endl;
serr() << "Reference \"" << foundPlaceholder << "\" in file \"" << src.first << "\" still unresolved." << endl;
it += placeholderSize;
}
// Remove hints for resolved libraries.