Try to catch the compilers that don't handle immidiate structures as well as we

would like.  We use them to initialise other struct (lookup) tables, so test
that as well.

Also try not to segfault during our snprintf tests - test both with a 0 len
buffer and without any buffer at all.

Andrew Bartlett
(This used to be commit 2d80ab7122f34d3bf31cddd26a63929f9c2ced77)

diff --git a/source3/configure.in b/source3/configure.in
index 6c2aae1872efe5b08a28e1fa02958de47d47eda5..90bf8a67c5c2609f10950e01b13977add6faec25 100644 (file)
--- a/source3/configure.in
+++ b/source3/configure.in
@@ -352,9 +352,15 @@ AC_CACHE_CHECK([for immediate structures],samba_cv_immediate_structures, [
     AC_TRY_COMPILE([
 #include <stdio.h>],
 [
-   #define X_FOOBAR(x) ((FOOBAR) { x })
    typedef struct {unsigned x;} FOOBAR;
-   FOOBAR f = X_FOOBAR(1);   
+   #define X_FOOBAR(x) ((FOOBAR) { x })
+   #define FOO_ONE X_FOOBAR(1)
+   FOOBAR f = FOO_ONE;   
+   static struct {
+       FOOBAR y; 
+       } f2[] = {
+               {FOO_ONE}
+       };   
 ],
        samba_cv_immediate_structures=yes,samba_cv_immediate_structures=no)])
 if test x"$samba_cv_immediate_structures" = x"yes"; then
@@ -989,6 +995,11 @@ void foo(const char *format, ...) {
        int len;
        char buf[5];
 
+       va_start(ap, format);
+       len = vsnprintf(buf, 0, format, ap);
+       va_end(ap);
+       if (len != 5) exit(1);
+
        va_start(ap, format);
        len = vsnprintf(0, 0, format, ap);
        va_end(ap);