Viewing file:  Wstringop-overflow-7.c (2.12 KB) -rw-r--r--
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/* Test to verify that --param ssa_name_def_chain_limit can be used to
limit the maximum number of SSA_NAME assignments the warning follows.
{ dg-do compile }
{ dg-options "-O2 -Wall -Wno-array-bounds --param ssa-name-def-chain-limit=5" } */
#define NOIPA __attribute__ ((noipa))
void* memset (void*, int, __SIZE_TYPE__);
char a9[9];
void sink (const char*, ...);
NOIPA void g2 (int i)
{
if (i < 1) i = 1;
char *p0 = a9;
char *p1 = p0 + i;
char *p2 = p1 + i;
sink (p0, p1, p2);
memset (p2, 0, 8); // { dg-warning "\\\[-Wstringop-overflow" }
}
NOIPA void g3 (int i)
{
if (i < 1) i = 1;
char *p0 = a9;
char *p1 = p0 + i;
char *p2 = p1 + i;
char *p3 = p2 + i;
sink (p0, p1, p2, p3);
memset (p3, 0, 7); // { dg-warning "\\\[-Wstringop-overflow" }
}
NOIPA void g4 (int i)
{
if (i < 1) i = 1;
char *p0 = a9;
char *p1 = p0 + i;
char *p2 = p1 + i;
char *p3 = p2 + i;
char *p4 = p3 + i;
sink (p0, p1, p2, p3, p4);
memset (p4, 0, 6); // { dg-warning "\\\[-Wstringop-overflow" }
}
NOIPA void g5 (int i)
{
if (i < 1) i = 1;
char *p0 = a9;
char *p1 = p0 + i;
char *p2 = p1 + i;
char *p3 = p2 + i;
char *p4 = p3 + i;
char *p5 = p4 + i;
sink (p0, p1, p2, p3, p4, p5);
memset (p5, 0, 5); // { dg-warning "\\\[-Wstringop-overflow" }
}
NOIPA void g6 (int i)
{
if (i < 1) i = 1;
char *p0 = a9;
char *p1 = p0 + i;
char *p2 = p1 + i;
char *p3 = p2 + i;
char *p4 = p3 + i;
char *p5 = p4 + i;
char *p6 = p5 + i;
sink (p0, p1, p2, p3, p4, p5, p6);
memset (p6, 0, 4);
}
NOIPA void g7 (int i)
{
if (i < 1) i = 1;
char *p0 = a9;
char *p1 = p0 + i;
char *p2 = p1 + i;
char *p3 = p2 + i;
char *p4 = p3 + i;
char *p5 = p4 + i;
char *p6 = p5 + i;
char *p7 = p6 + i;
sink (p0, p1, p2, p3, p4, p5, p6, p7);
memset (p7, 0, 4);
}
NOIPA void g8 (int i)
{
if (i < 1) i = 1;
char *p0 = a9;
char *p1 = p0 + i;
char *p2 = p1 + i;
char *p3 = p2 + i;
char *p4 = p3 + i;
char *p5 = p4 + i;
char *p6 = p5 + i;
char *p7 = p6 + i;
char *p8 = p7 + i;
sink (p0, p1, p2, p3, p4, p5, p6, p7, p8);
memset (p8, 0, 2);
}
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