Hi,
When using busybox' awk to bootstrap, libgo's syscalls are generated
incorrectly.
I'm attaching the split() used by busybox' awk including output before
and after the patch for reference.
Please install / ok to install?
Bernhard Reutner-Fischer (1):
mksyscalls.awk: make split ERE more portable
libgo/go/syscall/mksyscall.awk | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--
1.7.10.4
#include <regex.h>
#include <string.h>
#include <stdio.h>
int main(void) {
int l, n = 0;
char *inp = "//sysnb pipe(p *[2]_C_int) (err error)";
char *out = __builtin_alloca(strlen(inp)*2+3);
regex_t re;
regmatch_t m[1];
strcpy(out, inp);
#ifndef ERE
# define ERE "[ (]*"
#endif
if (regcomp(&re, ERE, REG_EXTENDED) != 0)
__builtin_abort();
do {
l = strcspn(inp, "\n\0");
if (regexec(&re, inp, 1, m, 0) == 0 && m[0].rm_so <= l) {
l = m[0].rm_so;
if (m[0].rm_eo == 0)
m[0].rm_eo++, l++;
n++;
} else {
m[0].rm_eo = l;
if (inp[l])
m[0].rm_eo++;
}
memcpy(out, inp, l);
do {
out[l] = '\0';
} while (++l < m[0].rm_eo);
printf("[%2d] '%s'\n", n, out);
while (*(out++) != '\0')
continue;
inp += m[0].rm_eo;
} while (*inp);
regfree(&re);
return 0;
}
#if 0
+ gcc '-DERE="[ (]*"' -o x regexec.c
+ ./x
[ 1] '/'
[ 2] '/'
[ 3] 's'
[ 4] 'y'
[ 5] 's'
[ 6] 'n'
[ 7] 'b'
[ 8] ''
[ 9] 'p'
[10] 'i'
[11] 'p'
[12] 'e'
[13] ''
[14] 'p'
[15] ''
[16] '*'
[17] '['
[18] '2'
[19] ']'
[20] '_'
[21] 'C'
[22] '_'
[23] 'i'
[24] 'n'
[25] 't'
[26] ')'
[27] ''
[28] 'e'
[29] 'r'
[30] 'r'
[31] ''
[32] 'e'
[33] 'r'
[34] 'r'
[35] 'o'
[36] 'r'
[37] ')'
+ gcc '-DERE="[ (]"' -o x regexec.c
+ ./x
[ 1] '//sysnb'
[ 2] 'pipe'
[ 3] 'p'
[ 4] '*[2]_C_int)'
[ 5] ''
[ 6] 'err'
[ 6] 'error)'
#endif
