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63 lines
2.8 KiB
C
63 lines
2.8 KiB
C
// RUN: %clang_analyze_cc1 -verify -analyzer-output text %s \
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// RUN: -analyzer-checker=core \
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// RUN: -analyzer-checker=apiModeling.Errno \
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// RUN: -analyzer-checker=debug.ExprInspection \
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// RUN: -analyzer-checker=debug.ErrnoTest \
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// RUN: -analyzer-checker=unix.Errno \
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// RUN: -DERRNO_VAR
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// RUN: %clang_analyze_cc1 -verify -analyzer-output text %s \
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// RUN: -analyzer-checker=core \
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// RUN: -analyzer-checker=apiModeling.Errno \
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// RUN: -analyzer-checker=debug.ExprInspection \
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// RUN: -analyzer-checker=debug.ErrnoTest \
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// RUN: -analyzer-checker=unix.Errno \
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// RUN: -DERRNO_FUNC
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#include "Inputs/errno_var.h"
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#include "Inputs/system-header-simulator.h"
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#ifdef ERRNO_VAR
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#include "Inputs/errno_var.h"
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#endif
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#ifdef ERRNO_FUNC
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#include "Inputs/errno_func.h"
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#endif
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int ErrnoTesterChecker_setErrnoCheckState();
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void something();
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void testErrnoCheckUndefRead() {
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int X = ErrnoTesterChecker_setErrnoCheckState();
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something();
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X = ErrnoTesterChecker_setErrnoCheckState(); // expected-note{{Assuming that this function succeeds but sets 'errno' to an unspecified value}}
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if (X == 0) { // expected-note{{'X' is equal to 0}}
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// expected-note@-1{{Taking true branch}}
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if (errno) {
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} // expected-warning@-1{{An undefined value may be read from 'errno'}}
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// expected-note@-2{{An undefined value may be read from 'errno'}}
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}
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}
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void testErrnoCheckOverwrite() {
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int X = ErrnoTesterChecker_setErrnoCheckState();
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something();
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X = ErrnoTesterChecker_setErrnoCheckState(); // expected-note{{Assuming that this function returns 2. 'errno' should be checked to test for failure}}
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if (X == 2) { // expected-note{{'X' is equal to 2}}
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// expected-note@-1{{Taking true branch}}
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errno = 0; // expected-warning{{Value of 'errno' was not checked and is overwritten here}}
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// expected-note@-1{{Value of 'errno' was not checked and is overwritten here}}
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}
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}
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void testErrnoCheckOverwriteStdCall() {
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int X = ErrnoTesterChecker_setErrnoCheckState();
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something();
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X = ErrnoTesterChecker_setErrnoCheckState(); // expected-note{{Assuming that this function returns 2. 'errno' should be checked to test for failure}}
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if (X == 2) { // expected-note{{'X' is equal to 2}}
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// expected-note@-1{{Taking true branch}}
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printf(""); // expected-warning{{Value of 'errno' was not checked and may be overwritten by function 'printf'}}
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// expected-note@-1{{Value of 'errno' was not checked and may be overwritten by function 'printf'}}
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}
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}
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