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// RUN: %clang_analyze_cc1 -analyzer-output=text -Wno-unused %s \
// RUN: -analyzer-checker=core,alpha.security.cert.env.InvalidPtr \
// RUN: -verify=putenv,common \
// RUN: -DENV_INVALIDATING_CALL="putenv(\"X=Y\")"
//
// RUN: %clang_analyze_cc1 -analyzer-output=text -Wno-unused %s \
// RUN: -analyzer-checker=core,alpha.security.cert.env.InvalidPtr \
// RUN: -verify=putenvs,common \
// RUN: -DENV_INVALIDATING_CALL="_putenv_s(\"X\", \"Y\")"
//
// RUN: %clang_analyze_cc1 -analyzer-output=text -Wno-unused %s \
// RUN: -analyzer-checker=core,alpha.security.cert.env.InvalidPtr \
// RUN: -verify=wputenvs,common \
// RUN: -DENV_INVALIDATING_CALL="_wputenv_s(\"X\", \"Y\")"
//
// RUN: %clang_analyze_cc1 -analyzer-output=text -Wno-unused %s \
// RUN: -analyzer-checker=core,alpha.security.cert.env.InvalidPtr \
// RUN: -verify=setenv,common \
// RUN: -DENV_INVALIDATING_CALL="setenv(\"X\", \"Y\", 0)"
//
// RUN: %clang_analyze_cc1 -analyzer-output=text -Wno-unused %s \
// RUN: -analyzer-checker=core,alpha.security.cert.env.InvalidPtr \
// RUN: -verify=unsetenv,common \
// RUN: -DENV_INVALIDATING_CALL="unsetenv(\"X\")"
typedef int errno_t;
typedef char wchar_t;
int putenv(char *string);
errno_t _putenv_s(const char *varname, const char *value_string);
errno_t _wputenv_s(const wchar_t *varname, const wchar_t *value_string);
int setenv(const char *name, const char *value, int overwrite);
int unsetenv(const char *name);
void fn_without_body(char **e);
void fn_with_body(char **e) {}
void call_env_invalidating_fn(char **e) {
ENV_INVALIDATING_CALL;
// putenv-note@-1 5 {{'putenv' call may invalidate the environment parameter of 'main'}}
// putenvs-note@-2 5 {{'_putenv_s' call may invalidate the environment parameter of 'main'}}
// wputenvs-note@-3 5 {{'_wputenv_s' call may invalidate the environment parameter of 'main'}}
// setenv-note@-4 5 {{'setenv' call may invalidate the environment parameter of 'main'}}
// unsetenv-note@-5 5 {{'unsetenv' call may invalidate the environment parameter of 'main'}}
*e;
// common-warning@-1 {{dereferencing an invalid pointer}}
// common-note@-2 {{dereferencing an invalid pointer}}
}
int main(int argc, char *argv[], char *envp[]) {
char **e = envp;
*e; // no-warning
e[0]; // no-warning
*envp; // no-warning
call_env_invalidating_fn(e);
// common-note@-1 5 {{Calling 'call_env_invalidating_fn'}}
// common-note@-2 4 {{Returning from 'call_env_invalidating_fn'}}
*e;
// common-warning@-1 {{dereferencing an invalid pointer}}
// common-note@-2 {{dereferencing an invalid pointer}}
*envp;
// common-warning@-1 2 {{dereferencing an invalid pointer}}
// common-note@-2 2 {{dereferencing an invalid pointer}}
fn_without_body(e);
// common-warning@-1 {{use of invalidated pointer 'e' in a function call}}
// common-note@-2 {{use of invalidated pointer 'e' in a function call}}
fn_with_body(e); // no-warning
}
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