clang_gcc_abi.cpp
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// RUN: %clangxx_asan -O0 -x c %s -o %t && not %run %t 2>&1 | FileCheck %s
// RUN: %clangxx_asan -O1 -x c %s -o %t && not %run %t 2>&1 | FileCheck %s
// RUN: %clangxx_asan -O2 -x c %s -o %t && not %run %t 2>&1 | FileCheck %s
// RUN: %clangxx_asan -O3 -x c %s -o %t && not %run %t 2>&1 | FileCheck %s
// REQUIRES: (arm-target-arch || armhf-target-arch), fast-unwinder-works
#include <stdlib.h>
__attribute__((noinline))
int boom() {
volatile int three = 3;
char * volatile s = (char *)malloc(three);
// CHECK: #1 0x{{.*}} in boom {{.*}}clang_gcc_abi.cpp:[[@LINE-1]]
return s[three]; //BOOM
}
__attribute__((naked, noinline)) void gcc_abi() {
// CHECK: #2 0x{{.*}} in gcc_abi {{.*}}clang_gcc_abi.cpp:[[@LINE+1]]
asm volatile("str fp, [sp, #-8]!\n\t"
"str lr, [sp, #4]\n\t"
"add fp, sp, #4\n\t"
"bl boom\n\t"
"sub sp, fp, #4\n\t"
"ldr fp, [sp]\n\t"
"add sp, sp, #4\n\t"
"ldr pc, [sp], #4\n\t"
);
}
__attribute__((naked, noinline)) void clang_abi() {
// CHECK: #3 0x{{.*}} in clang_abi {{.*}}clang_gcc_abi.cpp:[[@LINE+1]]
asm volatile("push {r11, lr}\n\t"
"mov r11, sp\n\t"
"bl gcc_abi\n\t"
"add r0, r0, #1\n\t"
"pop {r11, pc}\n\t"
);
}
int main() {
clang_abi();
// CHECK: #4 0x{{.*}} in main {{.*}}clang_gcc_abi.cpp:[[@LINE-1]]
}