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sprintf -> PyOS_snprintf in some "obviously safe" cases.

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Also changed <>-style #includes to ""-style in some places where the
former didn't make sense.
This commit is contained in:
Tim Peters 2001-11-28 20:27:42 +00:00
parent 05bd787c6c
commit 885d457709
15 changed files with 61 additions and 42 deletions
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12
Objects/stringobject.c
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@ -2876,7 +2876,9 @@ formatfloat(char *buf, size_t buflen, int flags,
prec = 6;
if (type == 'f' && fabs(x)/1e25 >= 1e25)
type = 'g';
sprintf(fmt, "%%%s.%d%c", (flags&F_ALT) ? "#" : "", prec, type);
PyOS_snprintf(fmt, sizeof(fmt), "%%%s.%d%c",
(flags&F_ALT) ? "#" : "",
prec, type);
/* worst case length calc to ensure no buffer overrun:
fmt = %#.<prec>g
buf = '-' + [0-9]*prec + '.' + 'e+' + (longest exp
@ -2889,7 +2891,7 @@ formatfloat(char *buf, size_t buflen, int flags,
"formatted float is too long (precision too large?)");
return -1;
}
sprintf(buf, fmt, x);
PyOS_snprintf(buf, buflen, fmt, x);
return strlen(buf);
}
@ -3047,7 +3049,9 @@ formatint(char *buf, size_t buflen, int flags,
return -1;
if (prec < 0)
prec = 1;
sprintf(fmt, "%%%s.%dl%c", (flags&F_ALT) ? "#" : "", prec, type);
PyOS_snprintf(fmt, sizeof(fmt), "%%%s.%dl%c",
(flags&F_ALT) ? "#" : "",
prec, type);
/* buf = '+'/'-'/'0'/'0x' + '[0-9]'*max(prec, len(x in octal))
worst case buf = '0x' + [0-9]*prec, where prec >= 11 */
if (buflen <= 13 || buflen <= (size_t)2 + (size_t)prec) {
@ -3055,7 +3059,7 @@ formatint(char *buf, size_t buflen, int flags,
"formatted integer is too long (precision too large?)");
return -1;
}
sprintf(buf, fmt, x);
PyOS_snprintf(buf, buflen, fmt, x);
/* When converting 0 under %#x or %#X, C leaves off the base marker,
* but we want it (for consistency with other %#x conversions, and
* for consistency with Python's hex() function).