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// RUN: not %clang_cc1 -std=c++11 -fcaret-diagnostics-max-lines 5 -Wsometimes-uninitialized %s 2>&1 | FileCheck %s --strict-whitespace
void line(int);
// Check we expand the range as much as possible within the limit.
// CHECK: warning: variable 'a' is used uninitialized whenever 'if' condition is true
// CHECK-NEXT: {{^}} if (cond) {
// CHECK-NEXT: {{^}} ^~~~{{$}}
// CHECK-NEXT: note: uninitialized use occurs here
// CHECK-NEXT: {{^}} return a;
// CHECK-NEXT: {{^}} ^
// CHECK-NEXT: note: remove the 'if' if its condition is always false
// CHECK-NEXT: {{^}} if (cond) {
// CHECK-NEXT: {{^}} ^~~~~~~~~~~{{$}}
// CHECK-NEXT: {{^}} line(1);
// CHECK-NEXT: {{^}}~~~~~~~~~~~~{{$}}
// CHECK-NEXT: {{^}} } else {
// CHECK-NEXT: {{^}}~~~~~~~~~{{$}}
// CHECK-NEXT: note: initialize the variable
int f1(int cond) {
int a;
if (cond) {
line(1);
} else {
a = 3;
}
return a;
}
// CHECK: warning: variable 'a' is used uninitialized whenever 'if' condition is true
// CHECK-NEXT: {{^}} if (cond) {
// CHECK-NEXT: {{^}} ^~~~{{$}}
// CHECK-NEXT: note: uninitialized use occurs here
// CHECK-NEXT: {{^}} return a;
// CHECK-NEXT: {{^}} ^
// CHECK-NEXT: note: remove the 'if' if its condition is always false
// CHECK-NEXT: {{^}} if (cond) {
// CHECK-NEXT: {{^}} ^~~~~~~~~~~{{$}}
// CHECK-NEXT: {{^}} line(1);
// CHECK-NEXT: {{^}}~~~~~~~~~~~~{{$}}
// CHECK-NEXT: {{^}} line(2);
// CHECK-NEXT: {{^}}~~~~~~~~~~~~{{$}}
// CHECK-NEXT: {{^}} } else {
// CHECK-NEXT: {{^}}~~~~~~~~~{{$}}
// CHECK-NEXT: note: initialize the variable
int f2(int cond) {
int a;
if (cond) {
line(1);
line(2);
} else {
a = 3;
}
return a;
}
// CHECK: warning: variable 'a' is used uninitialized whenever 'if' condition is true
// CHECK-NEXT: {{^}} if (cond) {
// CHECK-NEXT: {{^}} ^~~~{{$}}
// CHECK-NEXT: note: uninitialized use occurs here
// CHECK-NEXT: {{^}} return a;
// CHECK-NEXT: {{^}} ^
// CHECK-NEXT: note: remove the 'if' if its condition is always false
// CHECK-NEXT: {{^}} if (cond) {
// CHECK-NEXT: {{^}} ^~~~~~~~~~~{{$}}
// CHECK-NEXT: {{^}} line(1);
// CHECK-NEXT: {{^}}~~~~~~~~~~~~{{$}}
// CHECK-NEXT: {{^}} line(2);
// CHECK-NEXT: {{^}}~~~~~~~~~~~~{{$}}
// CHECK-NEXT: {{^}} line(3);
// CHECK-NEXT: {{^}}~~~~~~~~~~~~{{$}}
// CHECK-NEXT: {{^}} } else {
// CHECK-NEXT: {{^}}~~~~~~~~~{{$}}
// CHECK-NEXT: note: initialize the variable
int f3(int cond) {
int a;
if (cond) {
line(1);
line(2);
line(3);
} else {
a = 3;
}
return a;
}
// CHECK: warning: variable 'a' is used uninitialized whenever 'if' condition is true
// CHECK-NEXT: {{^}} if (cond) {
// CHECK-NEXT: {{^}} ^~~~{{$}}
// CHECK-NEXT: note: uninitialized use occurs here
// CHECK-NEXT: {{^}} return a;
// CHECK-NEXT: {{^}} ^
// CHECK-NEXT: note: remove the 'if' if its condition is always false
// CHECK-NEXT: {{^}} if (cond) {
// CHECK-NEXT: {{^}} ^~~~~~~~~~~{{$}}
// CHECK-NEXT: {{^}} line(1);
// CHECK-NEXT: {{^}}~~~~~~~~~~~~{{$}}
// CHECK-NEXT: {{^}} line(2);
// CHECK-NEXT: {{^}}~~~~~~~~~~~~{{$}}
// CHECK-NEXT: {{^}} line(3);
// CHECK-NEXT: {{^}}~~~~~~~~~~~~{{$}}
// CHECK-NEXT: {{^}} line(4);
// CHECK-NEXT: {{^}}~~~~~~~~~~~~{{$}}
// CHECK-NEXT: note: initialize the variable
int f4(int cond) {
int a;
if (cond) {
line(1);
line(2);
line(3);
line(4);
} else {
a = 3;
}
return a;
}
// CHECK: warning: variable 'a' is used uninitialized whenever 'if' condition is true
// CHECK-NEXT: {{^}} if (cond) {
// CHECK-NEXT: {{^}} ^~~~{{$}}
// CHECK-NEXT: note: uninitialized use occurs here
// CHECK-NEXT: {{^}} return a;
// CHECK-NEXT: {{^}} ^
// CHECK-NEXT: note: remove the 'if' if its condition is always false
// CHECK-NEXT: {{^}} if (cond) {
// CHECK-NEXT: {{^}} ^~~~~~~~~~~{{$}}
// CHECK-NEXT: {{^}} line(1);
// CHECK-NEXT: {{^}}~~~~~~~~~~~~{{$}}
// CHECK-NEXT: {{^}} line(2);
// CHECK-NEXT: {{^}}~~~~~~~~~~~~{{$}}
// CHECK-NEXT: {{^}} line(3);
// CHECK-NEXT: {{^}}~~~~~~~~~~~~{{$}}
// CHECK-NEXT: {{^}} line(4);
// CHECK-NEXT: {{^}}~~~~~~~~~~~~{{$}}
// CHECK-NEXT: note: initialize the variable
int f5(int cond) {
int a;
if (cond) {
line(1);
line(2);
line(3);
line(4);
line(5);
} else {
a = 3;
}
return a;
}
// Check that we don't include lines with no interesting code if we can't reach
// the interesting part within the line limit.
// CHECK: error: no matching function for call to 'g
// CHECK: note: candidate template ignored: substitution failure
// CHECK-NEXT: {{^}}decltype(T()
// CHECK-NEXT: {{^}} ~{{$}}
// CHECK-NEXT: {{^}} + 1
// CHECK-NEXT: {{^}} + 2
// CHECK-NEXT: {{^}} + 3
// CHECK-NEXT: {{^}}void g();
// CHECK-NEXT: {{^}} ^{{$}}
template<typename T>
decltype(T()
+ 1
+ 2
+ 3)
void g();
// CHECK: note: candidate template ignored: substitution failure
// CHECK-NEXT: {{^}}void g();
// CHECK-NEXT: {{^}} ^{{$}}
template<typename T>
decltype(T()
+ 1
+ 2
+ 3
+ 4)
void g();
void h() { g<int()>(); }
void multiple_ranges(int a, int b) {
// CHECK: error: invalid operands
// CHECK-NEXT: &(a)
// CHECK-NEXT: ~~~~
// CHECK-NEXT: +
// CHECK-NEXT: ^
// CHECK-NEXT: &(b)
// CHECK-NEXT: ~~~~
&(a)
+
&(b);
// CHECK-NEXT: error: invalid operands
// CHECK-NEXT: &(
// CHECK-NEXT: ~~
// CHECK-NEXT: a
// CHECK-NEXT: ~
// CHECK-NEXT: )
// CHECK-NEXT: ~
// CHECK-NEXT: +
// CHECK-NEXT: ^
// CHECK-NEXT: &(
// CHECK-NEXT: ~~
&(
a
)
+
&(
b
);
// CHECK-NEXT: error: invalid operands
// CHECK-NEXT: &(a
// CHECK-NEXT: ~~
// CHECK-NEXT: )
// CHECK-NEXT: ~
// CHECK-NEXT: +
// CHECK-NEXT: ^
// CHECK-NEXT: &(
// CHECK-NEXT: ~~
// CHECK-NEXT: b
// CHECK-NEXT: ~
&(a
)
+
&(
b
);
}
#define pr33902_a(b) #b
#define pr33902_c(d) _Pragma(pr33902_a(d))
#define pr33902_e(f) pr33902_c(GCC warning #f)
pr33902_e() pr33902_e()
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