1 // RUN: %clang_analyze_cc1 -analyzer-checker=core.BitwiseShift \
2 // RUN: -analyzer-config core.BitwiseShift:Pedantic=true \
3 // RUN: -analyzer-checker=debug.ExprInspection \
4 // RUN: -analyzer-config eagerly-assume=false \
5 // RUN: -verify=expected,c \
6 // RUN: -triple x86_64-pc-linux-gnu -x c %s \
7 // RUN: -Wno-shift-count-negative -Wno-shift-negative-value \
8 // RUN: -Wno-shift-count-overflow -Wno-shift-overflow \
9 // RUN: -Wno-shift-sign-overflow
10 //
11 // RUN: %clang_analyze_cc1 -analyzer-checker=core.BitwiseShift \
12 // RUN: -analyzer-config core.BitwiseShift:Pedantic=true \
13 // RUN: -analyzer-checker=debug.ExprInspection \
14 // RUN: -analyzer-config eagerly-assume=false \
15 // RUN: -verify=expected,cxx \
16 // RUN: -triple x86_64-pc-linux-gnu -x c++ -std=c++14 %s \
17 // RUN: -Wno-shift-count-negative -Wno-shift-negative-value \
18 // RUN: -Wno-shift-count-overflow -Wno-shift-overflow \
19 // RUN: -Wno-shift-sign-overflow
20
21 // Tests for validating the state updates provided by the BitwiseShift checker.
22 // These clang_analyzer_value() tests are in a separate file because
23 // debug.ExprInspection repeats each 'warning' with an superfluous 'note', so
24 // note level output (-analyzer-output=text) is not enabled in this file.
25
26 void clang_analyzer_value(int);
27 void clang_analyzer_eval(int);
28
state_update_generic(int left,int right)29 int state_update_generic(int left, int right) {
30 int x = left << right;
31 clang_analyzer_value(left); // expected-warning {{32s:{ [0, 2147483647] } }}
32 clang_analyzer_value(right); // expected-warning {{32s:{ [0, 31] } }}
33 return x;
34 }
35
state_update_exact_shift(int arg)36 int state_update_exact_shift(int arg) {
37 int x = 65535 << arg;
38 clang_analyzer_value(arg);
39 // c-warning@-1 {{32s:{ [0, 15] } }}
40 // cxx-warning@-2 {{32s:{ [0, 16] } }}
41 return x;
42 }
43