llvm-project/clang/test/Analysis/chroot.c

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// RUN: %clang_analyze_cc1 -analyzer-checker=alpha.unix.Chroot -analyzer-store region -verify %s
extern int chroot(const char* path);
extern int chdir(const char* path);
void foo(void) {
}
void f1(void) {
chroot("/usr/local"); // root changed.
foo(); // expected-warning {{No call of chdir("/") immediately after chroot}}
}
void f2(void) {
chroot("/usr/local"); // root changed.
chdir("/"); // enter the jail.
foo(); // no-warning
}
void f3(void) {
chroot("/usr/local"); // root changed.
chdir("../"); // change working directory, still out of jail.
foo(); // expected-warning {{No call of chdir("/") immediately after chroot}}
}