Viewing file:  Warray-bounds-58.c (2.97 KB) -rw-r--r--
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/* { dg-do compile }
{ dg-options "-O2 -Wall -Wno-stringop-overread" } */
typedef __SIZE_TYPE__ size_t;
extern size_t strlen (const char*);
void sink (size_t);
struct A0 { char i, a[0]; };
extern struct A0 ea0;
void fa0_extern (void)
{
sink (strlen (ea0.a - 2)); // { dg-warning "\\\[-Warray-bounds" }
sink (strlen (ea0.a - 1)); // { dg-warning "\\\[-Warray-bounds" "pr93514" { xfail *-*-* } }
sink (strlen (ea0.a)); // valid just-past-the-end offset
sink (strlen (ea0.a + 1)); // { dg-warning "\\\[-Warray-bounds|-Wstringop-overread" }
}
static struct A0 sa0 = { 0 };
void fa0_static (void)
{
sink (strlen (sa0.a - 2)); // { dg-warning "\\\[-Warray-bounds" }
sink (strlen (sa0.a - 1)); // { dg-warning "\\\[-Warray-bounds" "pr93514" { xfail *-*-* } }
sink (strlen (sa0.a)); // valid just-past-the-end offset
sink (strlen (sa0.a + 1)); // { dg-warning "\\\[-Warray-bounds|-Wstringop-overread" }
}
struct Ax { char i, a[]; };
extern struct Ax ax;
void fax_extern (void)
{
sink (strlen (ax.a - 2)); // { dg-warning "\\\[-Warray-bounds" "pr93514" }
sink (strlen (ax.a - 1)); // { dg-warning "\\\[-Warray-bounds" "pr93514" { xfail *-*-* } }
sink (strlen (ax.a));
sink (strlen (ax.a + 123));
}
static struct Ax ax0 = { 0, { 0 } };
static struct Ax ax1 = { 1, { 1, 0 } };
static struct Ax ax2 = { 2, { 2, 1, 0 } };
static struct Ax ax3 = { 3, { 3, 2, 1, 0 } };
void fax_static (void)
{
sink (strlen (ax0.a - 2)); // { dg-warning "\\\[-Warray-bounds" }
sink (strlen (ax0.a - 1)); // { dg-warning "\\\[-Warray-bounds" "pr93514" { xfail *-*-* } }
sink (strlen (ax0.a));
sink (strlen (ax0.a + 1)); // valid just-past-the-end offset
sink (strlen (ax0.a + 2)); // { dg-warning "\\\[-Warray-bounds|-Wstringop-overread" }
sink (strlen (ax1.a - 2)); // { dg-warning "\\\[-Warray-bounds" }
sink (strlen (ax1.a - 1)); // { dg-warning "\\\[-Warray-bounds" "pr93514" { xfail *-*-* } }
sink (strlen (ax1.a));
sink (strlen (ax1.a + 1));
sink (strlen (ax1.a + 2)); // valid just-past-the-end offset
sink (strlen (ax1.a + 3)); // { dg-warning "\\\[-Warray-bounds|-Wstringop-overread" }
sink (strlen (ax2.a - 2)); // { dg-warning "\\\[-Warray-bounds" }
sink (strlen (ax2.a - 1)); // { dg-warning "\\\[-Warray-bounds" "pr93514" { xfail *-*-* } }
sink (strlen (ax2.a));
sink (strlen (ax2.a + 1));
sink (strlen (ax2.a + 2));
sink (strlen (ax2.a + 3)); // valid just-past-the-end offset
sink (strlen (ax2.a + 4)); // { dg-warning "\\\[-Warray-bounds|-Wstringop-overread" }
sink (strlen (ax3.a - 2)); // { dg-warning "\\\[-Warray-bounds" }
sink (strlen (ax3.a - 1)); // { dg-warning "\\\[-Warray-bounds" "pr93514" { xfail *-*-* } }
sink (strlen (ax3.a));
sink (strlen (ax3.a + 1));
sink (strlen (ax3.a + 2));
sink (strlen (ax3.a + 3));
sink (strlen (ax3.a + 4)); // valid just-past-the-end offset
sink (strlen (ax3.a + 5)); // { dg-warning "\\\[-Warray-bounds|-Wstringop-overread" }
}
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