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include checking if snprintf(NULL, 0, "") works

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@15017 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2005-04-30 13:36:47 +00:00
parent ec72dc2b66
commit 57e84f3fe1
1 changed files with 11 additions and 2 deletions
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13
cf/broken-snprintf.m4
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@@ -10,7 +10,7 @@ int main()
{ {
char foo[[3]]; char foo[[3]];
snprintf(foo, 2, "12"); snprintf(foo, 2, "12");
return strcmp(foo, "1"); return strcmp(foo, "1") || snprintf(NULL, 0, "%d", 12) != 2;
}]])],[:],[ac_cv_func_snprintf_working=no],[:])) }]])],[:],[ac_cv_func_snprintf_working=no],[:]))
if test "$ac_cv_func_snprintf_working" = yes; then if test "$ac_cv_func_snprintf_working" = yes; then
@@ -39,10 +39,19 @@ int foo(int num, ...)
return strcmp(bar, "1"); return strcmp(bar, "1");
} }
int bar(int num, int len, ...)
{
int r;
va_list arg;
va_start(arg, len);
r = vsnprintf(NULL, 0, "%s", arg);
va_end(arg);
return r != len;
}
int main() int main()
{ {
return foo(0, "12"); return foo(0, "12") || bar(0, 2, "12");
}]])],[:],[ac_cv_func_vsnprintf_working=no],[:])) }]])],[:],[ac_cv_func_vsnprintf_working=no],[:]))
if test "$ac_cv_func_vsnprintf_working" = yes; then if test "$ac_cv_func_vsnprintf_working" = yes; then