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array bound check added

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This commit is contained in:
ceriel 1987-02-05 20:47:30 +00:00
parent ac77d6c7fe
commit 060a309f82
1 changed files with 8 additions and 2 deletions
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10
lang/cem/libcc/gen/ecvt.c
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@ -28,12 +28,12 @@ cvt(value, ndigit, decpt, sign, ecvtflag)
static char buf[NDIGITS]; static char buf[NDIGITS];
char buf1[NDIGITS]; char buf1[NDIGITS];
register char *pe = buf1; register char *pe = buf1;
register char *pb = buf; register char *pb;
int pointpos = 0; int pointpos = 0;
if (ndigit < 0) ndigit = 0; if (ndigit < 0) ndigit = 0;
if (ndigit >= NDIGITS - 1) ndigit = NDIGITS - 2; if (ndigit >= NDIGITS - 10) ndigit = NDIGITS - 11;
*sign = 0; *sign = 0;
if (value < 0) { if (value < 0) {
@ -50,6 +50,11 @@ cvt(value, ndigit, decpt, sign, ecvtflag)
/* compensate for rounding errors, because /* compensate for rounding errors, because
the conversion to "int" truncates the conversion to "int" truncates
*/ */
if (pe >= &buf1[NDIGITS]) {
pb = &buf1[NDIGITS-10];
while (pb > buf1) *--pb = *--pe;
pe = &buf[NDIGITS-10];
}
*pe++ = (int)((value+.05) * 10) + '0'; *pe++ = (int)((value+.05) * 10) + '0';
pointpos++; pointpos++;
} while (intpart != 0); } while (intpart != 0);
@ -61,6 +66,7 @@ cvt(value, ndigit, decpt, sign, ecvtflag)
fractpart = value; fractpart = value;
pointpos--; pointpos--;
} }
pb = &buf[0];
} }
pe = &buf[ndigit]; pe = &buf[ndigit];
if (! ecvtflag) { if (! ecvtflag) {