43 lines · c
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-overflow10//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-overflow20 21// Tests for validating the state updates provided by the BitwiseShift checker.22// These clang_analyzer_value() tests are in a separate file because23// debug.ExprInspection repeats each 'warning' with an superfluous 'note', so24// note level output (-analyzer-output=text) is not enabled in this file.25 26void clang_analyzer_value(int);27void clang_analyzer_eval(int);28 29int 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 36int 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