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fix off-by-one error that caused uninitialized memory read in floatscan

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this caused misreading of certain floating point values that are exact
multiples of large powers of ten, unpredictable depending on prior
stack contents.
This commit is contained in:
Rich Felker 2012-04-30 02:56:47 -04:00
parent e5a9b50e97
commit 28c5d46d84
1 changed files with 1 additions and 1 deletions
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2
src/internal/floatscan.c
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@ -244,7 +244,7 @@ static long double decfloat(FILE *f, int c, int bits, int emin, int sign, int po
/* Assemble desired bits into floating point variable */
for (y=i=0; i<LD_B1B_DIG; i++) {
if ((a+i & MASK)==z) x[z=(z+1 & MASK)] = 0;
if ((a+i & MASK)==z) x[(z=(z+1 & MASK))-1] = 0;
y = 1000000000.0L * y + x[a+i & MASK];
}