posix: Fix several string functions

Fixes bug 671309.

diff --git a/vapi/posix.vapi b/vapi/posix.vapi
index 28b92d91a2b1b9a287c74a7c83c72533966d355c..3603a0cc754e98d4b3fa5308a04707ddcd066d89 100644 (file)
--- a/vapi/posix.vapi
+++ b/vapi/posix.vapi
@@ -1194,7 +1194,7 @@ namespace Posix {
        [CCode (cheader_filename = "string.h")]
        public unowned string strcat (string s1, string s2);
        [CCode (cheader_filename = "string.h")]
-       public unowned string strchr (string s, int c);
+       public unowned string? strchr (string s, int c);
        [CCode (cheader_filename = "string.h")]
        public int strcmp (string s1, string s2);
        [CCode (cheader_filename = "string.h")]
@@ -1204,7 +1204,7 @@ namespace Posix {
        [CCode (cheader_filename = "string.h")]
        public size_t strcspn (string s1, string s2);
        [CCode (cheader_filename = "string.h")]
-       public unowned string strdup (string s1);
+       public string strdup (string s1);
        [CCode (cheader_filename = "string.h")]
        public unowned string strerror (int errnum);
        [CCode (cheader_filename = "string.h")]
@@ -1218,17 +1218,17 @@ namespace Posix {
        [CCode (cheader_filename = "string.h")]
        public unowned string strncpy (string s1, string s2, size_t n);
        [CCode (cheader_filename = "string.h")]
-       public unowned string strpbrk (string s1, string s2);
+       public unowned string? strpbrk (string s1, string s2);
        [CCode (cheader_filename = "string.h")]
-       public unowned string strrchr (string s, int c);
+       public unowned string? strrchr (string s, int c);
        [CCode (cheader_filename = "string.h")]
        public size_t strspn (string s1, string s2);
        [CCode (cheader_filename = "string.h")]
-       public unowned string strstr (string s1, string s2);
+       public unowned string? strstr (string s1, string s2);
        [CCode (cheader_filename = "string.h")]
-       public unowned string strtok (string s1, string s2);
+       public unowned string? strtok (string s1, string s2);
        [CCode (cheader_filename = "string.h")]
-       public unowned string strtok_r (string s, string sep, out string lasts);
+       public unowned string? strtok_r (string? s, string sep, out unowned string lasts);
        [CCode (cheader_filename = "string.h")]
        public size_t strxfrm (string s1, string s2, size_t n);