warn-alloca.c
739 Bytes
// RUN: %clang_cc1 -DSILENCE -fsyntax-only -verify -Wall %s
// RUN: %clang_cc1 -fsyntax-only -verify -Walloca %s
#ifdef SILENCE
// expected-no-diagnostics
#endif
void test1(int a) {
__builtin_alloca(a);
#ifndef SILENCE
// expected-warning@-2 {{use of function '__builtin_alloca' is discouraged; there is no way to check for failure but failure may still occur, resulting in a possibly exploitable security vulnerability}}
#endif
}
void test2(int a) {
__builtin_alloca_with_align(a, 32);
#ifndef SILENCE
// expected-warning@-2 {{use of function '__builtin_alloca_with_align' is discouraged; there is no way to check for failure but failure may still occur, resulting in a possibly exploitable security vulnerability}}
#endif
}