55 lines
1.2 KiB
C
55 lines
1.2 KiB
C
/* PR middle-end/101300 - -fsanitize=undefined suppresses -Wuninitialized
|
|
for a VLA read at -O0
|
|
{ dg-do compile }
|
|
{ dg-options "-O0 -Wall -fsanitize=undefined" }
|
|
{ dg-require-effective-target alloca } */
|
|
|
|
int warn_vla_rd0 (int n)
|
|
{
|
|
char a[n];
|
|
return a[0]; // { dg-warning "\\\[-Wuninitialized]" }
|
|
}
|
|
|
|
int warn_vla_rd1 (int n)
|
|
{
|
|
char a[n];
|
|
return a[1]; // { dg-warning "\\\[-Wuninitialized]" }
|
|
}
|
|
|
|
int warn_vla_rdi (int n, int i)
|
|
{
|
|
char a[n];
|
|
return a[i]; // { dg-warning "\\\[-Wuninitialized]" }
|
|
}
|
|
|
|
|
|
int warn_vla_wr0_rd2_1_0 (int n)
|
|
{
|
|
char a[n];
|
|
a[0] = __LINE__;
|
|
int x = a[2]; // { dg-warning "\\\[-Wuninitialized]" }
|
|
int y = a[1]; // { dg-warning "\\\[-Wuninitialized]" }
|
|
int z = a[0];
|
|
return x + y + z;
|
|
}
|
|
|
|
int warn_vla_wr1_rd2_1_0 (int n)
|
|
{
|
|
char a[n];
|
|
a[1] = __LINE__;
|
|
int x = a[2]; // { dg-warning "\\\[-Wuninitialized]" }
|
|
int y = a[1];
|
|
int z = a[0]; // { dg-warning "\\\[-Wuninitialized]" }
|
|
return x + y + z;
|
|
}
|
|
|
|
int warn_vla_wr2_rd2_1_0 (int n)
|
|
{
|
|
char a[n];
|
|
a[2] = __LINE__;
|
|
int x = a[2];
|
|
int y = a[1]; // { dg-warning "\\\[-Wuninitialized]" }
|
|
int z = a[0]; // { dg-warning "\\\[-Wuninitialized]" }
|
|
return x + y + z;
|
|
}
|