Viewing file:  auto-init-uninit-34.c (1.5 KB) -rw-r--r--
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/* PR middle-end/10138 - warn for uninitialized arrays passed as const*
arguments
Verify that passing pointers to uninitialized objects to arguments
to functions declared with attribute access is diagnosed where expected.
{ dg-do compile }
{ dg-options "-O -Wall -ftrivial-auto-var-init=zero" } */
#define RW(...) __attribute__ ((access (read_write, __VA_ARGS__)))
RW (1) RW (3) void
f4pi (int*, int*, int*, int*); // { dg-message "in a call to 'f4pi' declared with attribute 'access \\\(read_write, \[13\]\\\)'" }
void nowarn_scalar (void)
{
int i1 = 0, i2, i3 = 1, i4;
f4pi (&i1, &i2, &i3, &i4);
}
void warn_scalar_1 (void)
{
int i1; // { dg-message "declared here" "" }
int i2, i3 = 1, i4;
f4pi (&i1, &i2, &i3, &i4); // { dg-warning "'i1' may be used uninitialized" "" }
}
void warn_scalar_2 (void)
{
int j1 = 0, j2, j4;
int j3;
f4pi (&j1, &j2, &j3, &j4); // { dg-warning "'j3' may be used uninitialized" "" }
}
void nowarn_array_init (void)
{
int a1[4] = { 0 }, a2[5], a3[6] = { 0 }, a4[7];
f4pi (a1, a2, a3, a4);
}
void warn_array_1 (void)
{
int a1[4]; // { dg-message "'a1' declared here" }
int a2[5], a3[6] = { 0 }, a4[7];
f4pi (a1, a2, a3, a4); // { dg-warning "'a1' may be used uninitialized" }
}
void warn_array_2 (void)
{
int a1[4] = { 0 }, a2[5], a4[7];
int a3[6]; // { dg-message "'a3' declared here" }
f4pi (a1, a2, a3, a4); // { dg-warning "'a3' may be used uninitialized" }
}
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