Viewing file:  warn-sprintf-no-nul-3.c (2.57 KB) -rw-r--r--
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/* PR tree-optimization/87756 - missing unterminated argument warning
using address of a constant character
{ dg-do compile }
{ dg-options "-O2 -Wall -ftrack-macro-expansion=0" } */
typedef __WCHAR_TYPE__ wchar_t;
int sprintf (char*, const char*, ...);
extern char* dest (void);
extern void sink (int, ...);
#define D dest ()
#define T(expr) sink (0, (expr))
const wchar_t wnul = L'\0';
const wchar_t wnonul = L'a';
const wchar_t wcs3[] = L"123";
const struct
{
wchar_t a, b, s[3];
} w1 = { L'\0', L'b', L"123" },
w2[2] = {
{ L'\0', L'c', L"12" },
{ L'd', L'\0', L"123" }
};
void test_sprintf_ls (void)
{
T (sprintf (D, "%ls", &wnul));
T (sprintf (D, "%ls", &wnonul)); /* { dg-warning "nul-terminated" } */
T (sprintf (D, "%.1ls", &wnonul));
T (sprintf (D, "%.2ls", &wnonul)); /* { dg-warning "nul-terminated" } */
T (sprintf (D, "%ls", &w1.a));
T (sprintf (D, "%ls", &w1.b)); /* { dg-warning "nul-terminated" "pr88211" { xfail *-*-* } } */
T (sprintf (D, "%.1ls", &w1.b));
T (sprintf (D, "%.2ls", &w1.b)); /* { dg-warning "nul-terminated" "pr88211" { xfail *-*-* } } */
T (sprintf (D, "%ls", w1.s)); /* { dg-warning "nul-terminated" } */
T (sprintf (D, "%.3ls", w1.s));
T (sprintf (D, "%.4ls", w1.s)); /* { dg-warning "nul-terminated" } */
T (sprintf (D, "%.2ls", w1.s + 1));
T (sprintf (D, "%.3ls", w1.s + 1)); /* { dg-warning "nul-terminated" } */
T (sprintf (D, "%ls", &w2[0].a));
T (sprintf (D, "%ls", &w2[0].b)); /* { dg-warning "nul-terminated" "pr88211" { xfail *-*-* } } */
T (sprintf (D, "%.1ls", &w2[0].b));
T (sprintf (D, "%.2ls", &w2[0].b)); /* { dg-warning "nul-terminated" "pr88211" { xfail *-*-* } } */
T (sprintf (D, "%ls", w2[0].s));
T (sprintf (D, "%.3ls", w2[0].s));
T (sprintf (D, "%.4ls", w2[0].s));
T (sprintf (D, "%.2ls", w2[0].s + 1));
T (sprintf (D, "%.3ls", w2[0].s + 1));
T (sprintf (D, "%ls", &w2[1].a)); /* { dg-warning "nul-terminated" "pr88211" { xfail *-*-* } } */
T (sprintf (D, "%.1ls", &w2[1].a));
T (sprintf (D, "%.2ls", &w2[1].a)); /* { dg-warning "nul-terminated" "pr88211" { xfail *-*-* } } */
T (sprintf (D, "%ls", &w2[1].b));
T (sprintf (D, "%ls", w2[1].s)); /* { dg-warning "nul-terminated" } */
T (sprintf (D, "%.3ls", w2[1].s));
T (sprintf (D, "%.4ls", w2[1].s)); /* { dg-warning "nul-terminated" } */
T (sprintf (D, "%.2ls", w2[1].s + 1));
T (sprintf (D, "%.3ls", w2[1].s + 1));/* { dg-warning "nul-terminated" } */
T (sprintf (D, "%ls", &wcs3[3]));
T (sprintf (D, "%ls", &wcs3[4])); /* { dg-warning "\\\[-Warray-bounds" } */
}
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