fix r3822
Solaris strerror() invalid error code behaviour depends on version:
Solaris 10 returns "Unknown error" and sets errno to EINVAL,
Solaris 9 returns "Unknown error" and leaves errno intact,
Solaris 2 returns NULL.
diff --git a/auto/unix b/auto/unix
index ee284e1..fadf7dd 100755
--- a/auto/unix
+++ b/auto/unix
@@ -141,14 +141,19 @@
ngx_feature_name=NGX_SYS_NERR
ngx_feature_run=value
ngx_feature_incs='#include <errno.h>
+ #include <string.h>'
#include <stdio.h>'
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test='int n;
+ char *p;
for (n = 1; n < 1000; n++) {
errno = 0;
- strerror(n);
- if (errno == EINVAL) {
+ p = strerror(n);
+ if (errno == EINVAL
+ || p == NULL
+ || strncmp(p, "Unknown error", 13) == 0)
+ {
printf("%d", n);
return 0;
}
