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/* PR tree-optimization/78969 - bogus snprintf truncation warning due to
missing range info
{ dg-do compile }
{ dg-options "-O2 -Wall -Wformat-truncation=2" } */
typedef __SIZE_TYPE__ size_t;
extern int snprintf (char*, size_t, const char*, ...);
void f (unsigned j, char *p)
{
if (j > 999)
j = 0;
snprintf (p, 4, "%3u", j);
}
void g (unsigned j, char *p)
{
if (j > 999)
return;
snprintf (p, 4, "%3u", j); // { dg-bogus "-Wformat-truncation" }
}
void pr78969_c4 (char * p /* NNN\0" */)
{
for (int idx = 0; idx < 1000; idx++) {
// guaranteed to be in [0-999] range
snprintf (p, 4, "%d", idx); // { dg-bogus "-Wformat-truncation" }
}
}
void sink (int, ...);
char d[4];
void pr78969_c12 (unsigned i)
{
if (i >= 1000 && i < 10000)
snprintf (d, 4, "%3d", i / 10); // { dg-bogus "-Wformat-truncation" }
else
sink (i / 10 % 10);
}
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