31 lines · plain
1// RUN: %clang_analyze_cc1 -triple amdgcn-unknown-unknown -analyzer-checker=core %s2 3// expected-no-diagnostics4 5// This test case covers an issue found in the static analyzer6// solver where pointer sizes were assumed. Pointer sizes may vary on other7// architectures. This issue was originally discovered on a downstream,8// custom target, this assert occurs on the custom target and this one9// without the fix, and is fixed with this change.10//11// The assertion appears to be happening as a result of evaluating the12// SymIntExpr (reg_$0<int * p>) != 0U in VisitSymIntExpr located in13// SimpleSValBuilder.cpp. The LHS is evaluated to 32b and the RHS is14// evaluated to 16b. This eventually leads to the assertion in APInt.h.15//16// APInt.h:1151: bool llvm::APInt::operator==(const llvm::APInt &) const: Assertion `BitWidth == RHS.BitWidth && "Comparison requires equal bit widths"'17// 18void test1(__attribute__((address_space(256))) int * p) {19 __attribute__((address_space(256))) int * q = p-1;20 if (q) {}21 if (q) {}22 (void)q;23}24 25void test2(__attribute__((address_space(256))) int * p) {26 __attribute__((address_space(256))) int * q = p-1;27 q && q; 28 q && q; 29 (void)q;30} 31