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/* Test to verify that snprintf can determine the correct range
of lengths of string arguments based on the results of prior
calls to strlen.
{ dg-do compile }
{ dg-options "-O2 -Wall -fdump-tree-optimized" } */
typedef __SIZE_TYPE__ size_t;
void abort (void);
size_t strlen (const char *);
int snprintf (char * restrict, size_t, const char *restrict, ...);
void one_str_exact (const char *str)
{
if (1 == strlen (str))
if (1 != snprintf (0, 0, "%s", str))
abort ();
}
void two_str_exact (const char *s1, const char *s2)
{
if (1 == strlen (s1) && 2 == strlen (s2))
if (3 != snprintf (0, 0, "%s%s", s1, s2))
abort ();
}
void one_str_maxlen (const char *str)
{
if (2 >= strlen (str))
if (2 < snprintf (0, 0, "%s", str))
abort ();
}
void two_str_maxlen (const char *s1, const char *s2)
{
if (2 >= strlen (s1) && 3 >= strlen (s2))
if (5 < snprintf (0, 0, "%s%s", s1, s2))
abort ();
}
/* { dg-final { scan-tree-dump-not "abort" "optimized" } } */
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