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// RUN: %clang_analyze_cc1 -analyzer-checker=core -verify %s
typedef void(fatal_fun)() __attribute__((__noreturn__));
fatal_fun* fatal_fptr;
void fatal_decl() __attribute__((__noreturn__));
int rng();
/// This code calls a [[noreturn]] function pointer, which used to be handled
/// inconsistently between AST builder and CSA.
/// In the result, CSA produces a path where this function returns non-0.
int return_zero_or_abort_by_fnptr() {
if (rng()) fatal_fptr();
return 0;
}
/// This function calls a [[noreturn]] function.
/// If it does return, it always returns 0.
int return_zero_or_abort_by_direct_fun() {
if (rng()) fatal_decl();
return 0;
}
/// Trigger a division by zero issue depending on the return value
/// of the called functions.
int caller() {
int x = 0;
// The following if branches must never be taken.
if (return_zero_or_abort_by_fnptr())
return 1 / x; // no-warning: Dead code.
if (return_zero_or_abort_by_direct_fun())
return 1 / x; // no-warning: Dead code.
// Make sure the warning is still reported when viable.
return 1 / x; // expected-warning {{Division by zero}}
}
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