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

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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 commit is contained in:
Andrew Bartlett 0001-01-01 00:00:00 +00:00
parent 505119f0a7
commit 2d80ab7122
1 changed files with 13 additions and 2 deletions
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15
source/configure.in
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@ -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);