File: builtin-sprintf-warn-20.c

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gcc-arm-none-eabi 15%3A14.2.rel1-1
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/* PR tree-optimization/87034 - missing -Wformat-overflow on a sprintf
   %s with a wide string.  */
/* { dg-do compile } */
/* { dg-require-effective-target 4byte_wchar_t } */
/* { dg-options "-O2 -Wall -Wformat-overflow -ftrack-macro-expansion=0" } */

typedef __WCHAR_TYPE__ wchar_t;

extern int sprintf (char*, const char*, ...);

struct S
{
  char a[1];
  void (*pf)(void);
};

void test (struct S *p)
{
  const char *q = sizeof (wchar_t) == 2
    ? (char*)L"\x4142\x4344" : (char*)L"\x41424344\x45464748";

  sprintf (p->a, "%s", q);   /* { dg-warning "\\\[-Wformat-overflow" "pr87034" { xfail *-*-*} } */
}