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CBlock::WriteToDisk() properly checks ftell(3) for error return

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Rather than storing ftell(3)'s return value -- a long -- in an
unsigned int, we store and check a properly typed temp.  Then, assured a
non-negative value, we store in nBlockPosRet.
This commit is contained in:
Jeff Garzik 2012-04-22 13:59:24 -04:00 committed by Jeff Garzik
parent 1d8c7a9557
commit 5aa0b23825
1 changed files with 3 additions and 2 deletions
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5
src/main.h
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@ -944,9 +944,10 @@ public:
fileout << FLATDATA(pchMessageStart) << nSize; fileout << FLATDATA(pchMessageStart) << nSize;
// Write block // Write block
nBlockPosRet = ftell(fileout); long fileOutPos = ftell(fileout);
if (nBlockPosRet == -1) if (fileOutPos < 0)
return error("CBlock::WriteToDisk() : ftell failed"); return error("CBlock::WriteToDisk() : ftell failed");
nBlockPosRet = fileOutPos;
fileout << *this; fileout << *this;
// Flush stdio buffers and commit to disk before returning // Flush stdio buffers and commit to disk before returning