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Fix the incorrect handling of %b and \c in printf(1)

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This is required for POSIX compliance.

Obtained from:	Garrett D'Amore (Illumos)
MFC after:	4 days
This commit is contained in:
pfg 2014-05-08 20:20:59 +00:00
parent eb7a23f086
commit cf9c121b0f
1 changed files with 15 additions and 13 deletions
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28
usr.bin/printf/printf.c
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@ -110,7 +110,7 @@ int
main(int argc, char *argv[])
{
size_t len;
int chopped, end, rval;
int end, rval;
char *format, *fmt, *start;
#ifndef SHELL
int ch;
@ -151,7 +151,7 @@ main(int argc, char *argv[])
* up the format string.
*/
fmt = format = *argv;
chopped = escape(fmt, 1, &len); /* backslash interpretation */
escape(fmt, 1, &len); /* backslash interpretation */
rval = end = 0;
gargv = ++argv;
@ -195,7 +195,7 @@ main(int argc, char *argv[])
return (1);
}
fwrite(start, 1, fmt - start, stdout);
if (chopped || !*gargv) {
if (!*gargv) {
#ifdef SHELL
INTON;
#endif
@ -241,8 +241,8 @@ printf_doformat(char *fmt, int *rval)
maxargv = gargv;
fmt += l + 1;
/* save format argument */
fargv = gargv;
/* save format argument */
fargv = gargv;
} else {
fargv = NULL;
}
@ -352,7 +352,7 @@ printf_doformat(char *fmt, int *rval)
/* save the current arg offset, and set to the format arg */
if (fargv != NULL) {
gargv = fargv;
gargv = fargv;
}
convch = *fmt;
@ -371,12 +371,10 @@ printf_doformat(char *fmt, int *rval)
return (NULL);
}
getout = escape(p, 0, &len);
*(fmt - 1) = 's';
PF(start, p);
*(fmt - 1) = 'b';
fputs(p, stdout);
free(p);
if (getout)
return (fmt);
exit(*rval);
break;
}
case 'c': {
@ -488,9 +486,13 @@ escape(char *fmt, int percent, size_t *len)
*store = '\b';
break;
case 'c':
*store = '\0';
*len = store - save;
return (1);
if (!percent) {
*store = '\0';
*len = store - save;
return (1);
}
*store = 'c';
break;
case 'f': /* form-feed */
*store = '\f';
break;