llvm-project/clang/test/Driver/stack-clash-protection-02.c

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// RUN: %clang -target s390x-linux-gnu -fstack-clash-protection -### %s 2>&1 | FileCheck %s -check-prefix=SystemZ
// SystemZ: "-fstack-clash-protection"
// RUN: %clang -target s390x-linux-gnu -fstack-clash-protection -S -emit-llvm -o %t.ll %s 2>&1 | FileCheck %s -check-prefix=SystemZ-warn
// SystemZ-warn: warning: Unable to protect inline asm that clobbers stack pointer against stack clash
int foo(int c) {
int r;
__asm__("ag %%r15, %0"
:
: "rm"(c)
: "r15");
return r;
}