6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-14 16:33:28 +00:00
Code Issues Projects Releases Wiki Activity

Don't potentially read past the end of the fill data when making a NaN from

Browse Source 
an APInt.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97467 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
John McCall 2010-03-01 18:38:45 +00:00
parent 81607c902f
commit d44c6cc477
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
lib/Support/APFloat.cpp
View File

@ -638,7 +638,8 @@ void APFloat::makeNaN(bool SNaN, bool Negative, const APInt *fill)
if (!fill || fill->getNumWords() < numParts) if (!fill || fill->getNumWords() < numParts)
APInt::tcSet(significand, 0, numParts); APInt::tcSet(significand, 0, numParts);
if (fill) { if (fill) {
APInt::tcAssign(significand, fill->getRawData(), partCount()); APInt::tcAssign(significand, fill->getRawData(),
std::min(fill->getNumWords(), numParts));
// Zero out the excess bits of the significand. // Zero out the excess bits of the significand.
unsigned bitsToPreserve = semantics->precision - 1; unsigned bitsToPreserve = semantics->precision - 1;