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even more hacks to pass “-O666 -fstrict-overflow -Wstrict-overflow=9 -flto=jobserver” with “gcc version 4.8.0 20120930 (experimental) [trunk revision 191865] (Debian 20120930-1)” ☹ plus make the rtchecks mandatory

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tg
2012-10-03 17:24:23 +00:00
parent c39bfe09ee
commit d8662eb228
9 changed files with 115 additions and 69 deletions
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19
misc.c
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@ -30,7 +30,7 @@
#include <grp.h>
#endif
__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.198 2012/10/03 15:13:33 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.199 2012/10/03 17:24:21 tg Exp $");
#define KSH_CHVT_FLAG
#ifdef MKSH_SMALL
@ -469,8 +469,10 @@ parse_args(const char **argv,
int
getn(const char *s, int *ai)
{
int i, c, rv = 0;
int c;
unsigned int i, j, k;
bool neg = false;
int rv = 0;
do {
c = *s++;
@ -480,22 +482,19 @@ getn(const char *s, int *ai)
c = *s++;
} else if (c == '+')
c = *s++;
*ai = i = 0;
k = neg ? 2147483648U : 2147483647U;
j = i = 0;
do {
if (!ksh_isdigit(c))
goto getn_out;
i *= 10;
if (i < *ai)
/* overflow */
if ((j = i * 10 + c - '0') > k)
goto getn_out;
i += c - '0';
*ai = i;
i = j;
} while ((c = *s++));
rv = 1;
getn_out:
if (neg)
*ai = -*ai;
*ai = i == 2147483648U ? -2147483648 : neg ? -(int)i : (int)i;
return (rv);
}