// FIXME: copied? modified? passed through? observed?
Printf(" %sUninitialized value was stored to memory at%s\n", d.Origin(),
d.End());
- StackTrace::PrintStack(trace, size - 1);
+ StackTrace::PrintStack(trace, size);
id = prev_id;
}
}
--- /dev/null
+// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -m64 -O3 %s -o %t && \
+// RUN: MSAN_OPTIONS=malloc_context_size=1 not %run %t 2>&1 | FileCheck %s
+
+// Test that stack trace for the intermediate store is not empty.
+
+// CHECK: MemorySanitizer: use-of-uninitialized-value
+// CHECK: #0 {{.*}} in main
+
+// CHECK: Uninitialized value was stored to memory at
+// CHECK: #0 {{.*}} in fn_g
+
+// CHECK: Uninitialized value was created by an allocation of 'z' in the stack frame of function 'main'
+// CHECK: #0 {{.*}} in main
+
+#include <stdio.h>
+
+volatile int x;
+
+__attribute__((noinline))
+void fn_g(int a) {
+ x = a;
+}
+
+__attribute__((noinline))
+void fn_f(int a) {
+ fn_g(a);
+}
+
+int main(int argc, char *argv[]) {
+ int volatile z;
+ fn_f(z);
+ return x;
+}