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cwFile.cpp : Added guard to not write if bufByteCnt is 0.

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This commit is contained in:
kevin 2023-11-14 07:52:15 -05:00
parent ce55c64a3b
commit d499dfac1c
1 changed files with 7 additions and 4 deletions
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11
cwFile.cpp
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@ -251,11 +251,14 @@ cw::rc_t cw::file::write( handle_t h, const void* buf, unsigned bufByteCnt )
if( p->lastRC != kOkRC ) if( p->lastRC != kOkRC )
return p->lastRC; return p->lastRC;
errno = 0;
if( fwrite(buf,bufByteCnt,1,p->fp) != 1 )
return p->lastRC = cwLogSysError(kWriteFailRC,errno,"File write failed on '%s'.", cwStringNullGuard(p->fnStr));
if( bufByteCnt )
{
errno = 0;
if( fwrite(buf,bufByteCnt,1,p->fp) != 1 )
return p->lastRC = cwLogSysError(kWriteFailRC,errno,"File write failed on '%s'.", cwStringNullGuard(p->fnStr));
}
return kOkRC; return kOkRC;
} }