9fdcae7c81
Some AST nodes which stands for implicit initialization is shared. The analyzer will do the same evaluation on the same nodes resulting in the same state. The analyzer will "cache out", i.e. it thinks that it visited an already existing node in the exploded graph. This is not true in this case and we lose coverage. Since these nodes do not really require any processing from the analyzer we just omit them from the CFG. Differential Revision: https://reviews.llvm.org/D71371
39 lines
1.5 KiB
C
39 lines
1.5 KiB
C
// RUN: %clang_analyze_cc1 -analyzer-checker=core,debug.ExprInspection -std=c99 -verify %s
|
|
|
|
void clang_analyzer_eval(int);
|
|
|
|
void array_init() {
|
|
int a[5] = {[4] = 29, [2] = 15, [0] = 4};
|
|
clang_analyzer_eval(a[0] == 4); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(a[1] == 0); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(a[2] == 15); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(a[3] == 0); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(a[4] == 29); // expected-warning{{TRUE}}
|
|
int b[5] = {[0 ... 2] = 1, [4] = 5};
|
|
clang_analyzer_eval(b[0] == 1); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(b[1] == 1); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(b[2] == 1); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(b[3] == 0); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(b[4] == 5); // expected-warning{{TRUE}}
|
|
}
|
|
|
|
struct point {
|
|
int x, y;
|
|
};
|
|
|
|
void struct_init() {
|
|
struct point p = {.y = 5, .x = 3};
|
|
clang_analyzer_eval(p.x == 3); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(p.y == 5); // expected-warning{{TRUE}}
|
|
}
|
|
|
|
void array_of_struct() {
|
|
struct point ptarray[3] = { [2].y = 1, [2].x = 2, [0].x = 3 };
|
|
clang_analyzer_eval(ptarray[0].x == 3); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(ptarray[0].y == 0); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(ptarray[1].x == 0); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(ptarray[1].y == 0); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(ptarray[2].x == 2); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(ptarray[2].y == 1); // expected-warning{{TRUE}}
|
|
}
|