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// RUN: %clangxx_msan -fno-sanitize-memory-param-retval -fsanitize-memory-track-origins=2 -DOFFSET=0 -O3 %s -o %t && \
// RUN: not %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z1 --check-prefix=CHECK-%short-stack < %t.out
// RUN: %clangxx_msan -fno-sanitize-memory-param-retval -fsanitize-memory-track-origins=2 -DOFFSET=10 -O3 %s -o %t && \
// RUN: not %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z2 --check-prefix=CHECK-%short-stack < %t.out
// RUN: %clangxx_msan -fno-sanitize-memory-param-retval -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -DOFFSET=0 -O3 %s -o %t && \
// RUN: not %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z1 --check-prefix=CHECK-%short-stack < %t.out
// RUN: %clangxx_msan -fno-sanitize-memory-param-retval -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -DOFFSET=10 -O3 %s -o %t && \
// RUN: not %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z2 --check-prefix=CHECK-%short-stack < %t.out
#include <stdio.h>
#include <string.h>
int xx[10000];
int yy[10000];
volatile int idx = 30;
__attribute__((noinline))
void fn_g(int a, int b) {
xx[idx] = a; xx[idx + 10] = b;
}
__attribute__((noinline))
void fn_f(int a, int b) {
fn_g(a, b);
}
__attribute__((noinline))
void fn_h() {
memcpy(&yy, &xx, sizeof(xx));
}
int main(int argc, char *argv[]) {
int volatile z1;
int volatile z2;
fn_f(z1, z2);
fn_h();
return yy[idx + OFFSET];
}
// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
// CHECK: {{#0 .* in main .*chained_origin_memcpy.cpp:}}[[@LINE-4]]
// CHECK: Uninitialized value was stored to memory at
// CHECK-FULL-STACK: {{#1 .* in fn_h.*chained_origin_memcpy.cpp:}}[[@LINE-15]]
// CHECK-SHORT-STACK: {{#0 .* in __msan_memcpy.*msan_interceptors.cpp:}}
// CHECK: Uninitialized value was stored to memory at
// CHECK-FULL-STACK: {{#0 .* in fn_g.*chained_origin_memcpy.cpp:}}[[@LINE-29]]
// CHECK-FULL-STACK: {{#1 .* in fn_f.*chained_origin_memcpy.cpp:}}[[@LINE-25]]
// CHECK-SHORT-STACK: {{#0 .* in fn_g.*chained_origin_memcpy.cpp:}}[[@LINE-31]]
// CHECK-Z1: Uninitialized value was created by an allocation of 'z1' in the stack frame
// CHECK-Z2: Uninitialized value was created by an allocation of 'z2' in the stack frame
// CHECK-Z1: {{#0 .* in main.*chained_origin_memcpy.cpp:}}[[@LINE-21]]
// CHECK-Z2: {{#0 .* in main.*chained_origin_memcpy.cpp:}}[[@LINE-21]]
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