// RUN: %clang_analyze_cc1 %s \ // RUN: -analyzer-checker=core \ // RUN: -analyzer-checker=alpha.unix.cstring.OutOfBounds,alpha.unix.cstring.UninitializedRead \ // RUN: -analyzer-config eagerly-assume=false \ // RUN: -verify // expected-no-diagnostics typedef typeof(sizeof(int)) size_t; void *memmove(void *, const void *, size_t); typedef struct { char a[1024]; } b; int c; b *invalidate(); int d() { b *a = invalidate(); if (c < 1024) return 0; int f = c & ~3, g = f; g--; if (g) return 0; // Parent state is already infeasible. // clang_analyzer_printState(); // "constraints": [ // { "symbol": "(derived_$3{conj_$0{int, LC1, S728, #1},c}) & -4", "range": "{ [1, 1] }" }, // { "symbol": "derived_$3{conj_$0{int, LC1, S728, #1},c}", "range": "{ [1024, 2147483647] }" } // ], // This sould not crash! // It crashes in baseline, since there both true and false states are nullptr! memmove(a->a, &a->a[f], c - f); return 0; }