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// RUN: %clang_analyze_cc1 -verify %s \
// RUN: -analyzer-checker=core \
// RUN: -analyzer-checker=alpha.unix.Errno \
// RUN: -analyzer-checker=alpha.unix.Stream \
// RUN: -analyzer-checker=apiModeling.StdCLibraryFunctions \
// RUN: -analyzer-config apiModeling.StdCLibraryFunctions:ModelPOSIX=true \
// RUN: -analyzer-checker=debug.ExprInspection
// enable only StdCLibraryFunctions checker
// RUN: %clang_analyze_cc1 -verify %s \
// RUN: -analyzer-checker=core \
// RUN: -analyzer-checker=alpha.unix.Errno \
// RUN: -analyzer-checker=apiModeling.StdCLibraryFunctions \
// RUN: -analyzer-config apiModeling.StdCLibraryFunctions:ModelPOSIX=true \
// RUN: -analyzer-checker=debug.ExprInspection
#include "Inputs/system-header-simulator.h"
#include "Inputs/errno_var.h"
void clang_analyzer_eval(int);
const char *WBuf = "123456789";
char RBuf[10];
void test_freopen(FILE *F) {
F = freopen("xxx", "w", F);
if (F) {
if (errno) {} // expected-warning{{undefined}}
} else {
clang_analyzer_eval(errno != 0); // expected-warning {{TRUE}}
}
}
void test_fread(FILE *F) {
size_t Ret = fread(RBuf, 1, 10, F);
clang_analyzer_eval(F != NULL); // expected-warning {{TRUE}}
if (Ret == 10) {
if (errno) {} // expected-warning{{undefined}}
} else {
clang_analyzer_eval(Ret < 10); // expected-warning {{TRUE}}
clang_analyzer_eval(errno != 0); // expected-warning {{TRUE}}
}
clang_analyzer_eval(feof(F)); // expected-warning {{UNKNOWN}}
clang_analyzer_eval(ferror(F)); // expected-warning {{UNKNOWN}}
}
void test_fwrite(FILE *F) {
size_t Ret = fwrite(WBuf, 1, 10, F);
clang_analyzer_eval(F != NULL); // expected-warning {{TRUE}}
if (Ret == 10) {
if (errno) {} // expected-warning{{undefined}}
} else {
clang_analyzer_eval(Ret < 10); // expected-warning {{TRUE}}
clang_analyzer_eval(errno != 0); // expected-warning {{TRUE}}
}
clang_analyzer_eval(feof(F)); // expected-warning {{UNKNOWN}}
clang_analyzer_eval(ferror(F)); // expected-warning {{UNKNOWN}}
}
void test_fclose(FILE *F) {
int Ret = fclose(F);
clang_analyzer_eval(F != NULL); // expected-warning {{TRUE}}
if (Ret == 0) {
if (errno) {} // expected-warning{{undefined}}
} else {
clang_analyzer_eval(Ret == EOF); // expected-warning {{TRUE}}
clang_analyzer_eval(errno != 0); // expected-warning {{TRUE}}
}
clang_analyzer_eval(feof(F)); // expected-warning {{UNKNOWN}}
clang_analyzer_eval(ferror(F)); // expected-warning {{UNKNOWN}}
}
void test_fseek(FILE *F) {
int Ret = fseek(F, SEEK_SET, 1);
clang_analyzer_eval(F != NULL); // expected-warning {{TRUE}}
if (Ret == 0) {
if (errno) {} // expected-warning{{undefined}}
} else {
clang_analyzer_eval(Ret == -1); // expected-warning {{TRUE}}
clang_analyzer_eval(errno != 0); // expected-warning {{TRUE}}
}
clang_analyzer_eval(feof(F)); // expected-warning {{UNKNOWN}}
clang_analyzer_eval(ferror(F)); // expected-warning {{UNKNOWN}}
}
void check_fgetpos(FILE *F) {
errno = 0;
fpos_t Pos;
int Ret = fgetpos(F, &Pos);
clang_analyzer_eval(F != NULL); // expected-warning {{TRUE}}
if (Ret)
clang_analyzer_eval(errno != 0); // expected-warning{{TRUE}}
else
clang_analyzer_eval(errno == 0); // expected-warning{{TRUE}}
// expected-warning@-1{{FALSE}}
if (errno) {} // no-warning
clang_analyzer_eval(feof(F)); // expected-warning {{UNKNOWN}}
clang_analyzer_eval(ferror(F)); // expected-warning {{UNKNOWN}}
}
void check_fsetpos(FILE *F) {
errno = 0;
fpos_t Pos;
int Ret = fsetpos(F, &Pos);
clang_analyzer_eval(F != NULL); // expected-warning {{TRUE}}
if (Ret)
clang_analyzer_eval(errno != 0); // expected-warning{{TRUE}}
else
clang_analyzer_eval(errno == 0); // expected-warning{{TRUE}}
// expected-warning@-1{{FALSE}}
if (errno) {} // no-warning
clang_analyzer_eval(feof(F)); // expected-warning {{UNKNOWN}}
clang_analyzer_eval(ferror(F)); // expected-warning {{UNKNOWN}}
}
void check_ftell(FILE *F) {
errno = 0;
long Ret = ftell(F);
clang_analyzer_eval(F != NULL); // expected-warning {{TRUE}}
if (Ret == -1) {
clang_analyzer_eval(errno != 0); // expected-warning{{TRUE}}
} else {
clang_analyzer_eval(errno == 0); // expected-warning{{TRUE}}
// expected-warning@-1{{FALSE}}
clang_analyzer_eval(Ret >= 0); // expected-warning{{TRUE}}
}
if (errno) {} // no-warning
clang_analyzer_eval(feof(F)); // expected-warning {{UNKNOWN}}
clang_analyzer_eval(ferror(F)); // expected-warning {{UNKNOWN}}
}
void test_rewind(FILE *F) {
errno = 0;
rewind(F);
clang_analyzer_eval(F != NULL); // expected-warning{{TRUE}}
clang_analyzer_eval(errno == 0); // expected-warning{{TRUE}}
// expected-warning@-1{{FALSE}}
rewind(F);
}
void test_feof(FILE *F) {
errno = 0;
feof(F);
clang_analyzer_eval(F != NULL); // expected-warning{{TRUE}}
if (errno) {} // no-warning
clang_analyzer_eval(errno == 0); // expected-warning{{TRUE}}
// expected-warning@-1{{FALSE}}
}
void test_ferror(FILE *F) {
errno = 0;
ferror(F);
clang_analyzer_eval(F != NULL); // expected-warning{{TRUE}}
if (errno) {} // no-warning
clang_analyzer_eval(errno == 0); // expected-warning{{TRUE}}
// expected-warning@-1{{FALSE}}
}
void test_clearerr(FILE *F) {
errno = 0;
clearerr(F);
clang_analyzer_eval(F != NULL); // expected-warning{{TRUE}}
if (errno) {} // no-warning
clang_analyzer_eval(errno == 0); // expected-warning{{TRUE}}
// expected-warning@-1{{FALSE}}
}
void freadwrite_zerosize(FILE *F) {
fwrite(WBuf, 1, 0, F);
clang_analyzer_eval(feof(F)); // expected-warning {{UNKNOWN}}
clang_analyzer_eval(ferror(F)); // expected-warning {{UNKNOWN}}
fwrite(WBuf, 0, 1, F);
clang_analyzer_eval(feof(F)); // expected-warning {{UNKNOWN}}
clang_analyzer_eval(ferror(F)); // expected-warning {{UNKNOWN}}
fread(RBuf, 1, 0, F);
clang_analyzer_eval(feof(F)); // expected-warning {{UNKNOWN}}
clang_analyzer_eval(ferror(F)); // expected-warning {{UNKNOWN}}
fread(RBuf, 0, 1, F);
clang_analyzer_eval(feof(F)); // expected-warning {{UNKNOWN}}
clang_analyzer_eval(ferror(F)); // expected-warning {{UNKNOWN}}
}
void freadwrite_zerosize_errno(FILE *F, int A) {
switch (A) {
case 1:
fwrite(WBuf, 1, 0, F);
if (errno) {} // expected-warning{{undefined}}
break;
case 2:
fwrite(WBuf, 0, 1, F);
if (errno) {} // expected-warning{{undefined}}
break;
case 3:
fread(RBuf, 1, 0, F);
if (errno) {} // expected-warning{{undefined}}
break;
case 4:
fread(RBuf, 0, 1, F);
if (errno) {} // expected-warning{{undefined}}
break;
}
}
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