head 1.1; branch 1.1.1; access; symbols netbsd-11-0-RC4:1.1.1.5 netbsd-11-0-RC3:1.1.1.5 netbsd-11-0-RC2:1.1.1.5 netbsd-11-0-RC1:1.1.1.5 perseant-exfatfs-base-20250801:1.1.1.5 netbsd-11:1.1.1.5.0.10 netbsd-11-base:1.1.1.5 netbsd-10-1-RELEASE:1.1.1.5 perseant-exfatfs-base-20240630:1.1.1.5 perseant-exfatfs:1.1.1.5.0.8 perseant-exfatfs-base:1.1.1.5 netbsd-8-3-RELEASE:1.1.1.2 netbsd-9-4-RELEASE:1.1.1.4 netbsd-10-0-RELEASE:1.1.1.5 netbsd-10-0-RC6:1.1.1.5 netbsd-10-0-RC5:1.1.1.5 netbsd-10-0-RC4:1.1.1.5 netbsd-10-0-RC3:1.1.1.5 netbsd-10-0-RC2:1.1.1.5 netbsd-10-0-RC1:1.1.1.5 netbsd-10:1.1.1.5.0.6 netbsd-10-base:1.1.1.5 netbsd-9-3-RELEASE:1.1.1.4 cjep_sun2x:1.1.1.5.0.4 cjep_sun2x-base:1.1.1.5 cjep_staticlib_x-base1:1.1.1.5 netbsd-9-2-RELEASE:1.1.1.4 cjep_staticlib_x:1.1.1.5.0.2 cjep_staticlib_x-base:1.1.1.5 netbsd-9-1-RELEASE:1.1.1.4 phil-wifi-20200421:1.1.1.5 phil-wifi-20200411:1.1.1.5 phil-wifi-20200406:1.1.1.5 netbsd-8-2-RELEASE:1.1.1.2 netbsd-9-0-RELEASE:1.1.1.4 netbsd-9-0-RC2:1.1.1.4 netbsd-9-0-RC1:1.1.1.4 netbsd-9:1.1.1.4.0.2 netbsd-9-base:1.1.1.4 phil-wifi-20190609:1.1.1.4 netbsd-8-1-RELEASE:1.1.1.2 netbsd-8-1-RC1:1.1.1.2 pgoyette-compat-merge-20190127:1.1.1.3.2.1 pgoyette-compat-20190127:1.1.1.4 pgoyette-compat-20190118:1.1.1.4 pgoyette-compat-1226:1.1.1.4 pgoyette-compat-1126:1.1.1.4 pgoyette-compat-1020:1.1.1.4 pgoyette-compat-0930:1.1.1.4 pgoyette-compat-0906:1.1.1.4 netbsd-7-2-RELEASE:1.1.1.1 pgoyette-compat-0728:1.1.1.4 clang-337282:1.1.1.4 netbsd-8-0-RELEASE:1.1.1.2 phil-wifi:1.1.1.3.0.4 phil-wifi-base:1.1.1.3 pgoyette-compat-0625:1.1.1.3 netbsd-8-0-RC2:1.1.1.2 pgoyette-compat-0521:1.1.1.3 pgoyette-compat-0502:1.1.1.3 pgoyette-compat-0422:1.1.1.3 netbsd-8-0-RC1:1.1.1.2 pgoyette-compat-0415:1.1.1.3 pgoyette-compat-0407:1.1.1.3 pgoyette-compat-0330:1.1.1.3 pgoyette-compat-0322:1.1.1.3 pgoyette-compat-0315:1.1.1.3 netbsd-7-1-2-RELEASE:1.1.1.1 pgoyette-compat:1.1.1.3.0.2 pgoyette-compat-base:1.1.1.3 netbsd-7-1-1-RELEASE:1.1.1.1 clang-319952:1.1.1.3 matt-nb8-mediatek:1.1.1.2.0.10 matt-nb8-mediatek-base:1.1.1.2 clang-309604:1.1.1.3 perseant-stdc-iso10646:1.1.1.2.0.8 perseant-stdc-iso10646-base:1.1.1.2 netbsd-8:1.1.1.2.0.6 netbsd-8-base:1.1.1.2 prg-localcount2-base3:1.1.1.2 prg-localcount2-base2:1.1.1.2 prg-localcount2-base1:1.1.1.2 prg-localcount2:1.1.1.2.0.4 prg-localcount2-base:1.1.1.2 pgoyette-localcount-20170426:1.1.1.2 bouyer-socketcan-base1:1.1.1.2 pgoyette-localcount-20170320:1.1.1.2 netbsd-7-1:1.1.1.1.0.16 netbsd-7-1-RELEASE:1.1.1.1 netbsd-7-1-RC2:1.1.1.1 clang-294123:1.1.1.2 netbsd-7-nhusb-base-20170116:1.1.1.1 bouyer-socketcan:1.1.1.2.0.2 bouyer-socketcan-base:1.1.1.2 clang-291444:1.1.1.2 pgoyette-localcount-20170107:1.1.1.1 netbsd-7-1-RC1:1.1.1.1 pgoyette-localcount-20161104:1.1.1.1 netbsd-7-0-2-RELEASE:1.1.1.1 localcount-20160914:1.1.1.1 netbsd-7-nhusb:1.1.1.1.0.14 netbsd-7-nhusb-base:1.1.1.1 clang-280599:1.1.1.1 pgoyette-localcount-20160806:1.1.1.1 pgoyette-localcount-20160726:1.1.1.1 pgoyette-localcount:1.1.1.1.0.12 pgoyette-localcount-base:1.1.1.1 netbsd-7-0-1-RELEASE:1.1.1.1 clang-261930:1.1.1.1 netbsd-7-0:1.1.1.1.0.10 netbsd-7-0-RELEASE:1.1.1.1 netbsd-7-0-RC3:1.1.1.1 netbsd-7-0-RC2:1.1.1.1 netbsd-7-0-RC1:1.1.1.1 clang-237755:1.1.1.1 clang-232565:1.1.1.1 clang-227398:1.1.1.1 tls-maxphys-base:1.1.1.1 tls-maxphys:1.1.1.1.0.8 netbsd-7:1.1.1.1.0.6 netbsd-7-base:1.1.1.1 clang-215315:1.1.1.1 clang-209886:1.1.1.1 yamt-pagecache:1.1.1.1.0.4 yamt-pagecache-base9:1.1.1.1 tls-earlyentropy:1.1.1.1.0.2 tls-earlyentropy-base:1.1.1.1 riastradh-xf86-video-intel-2-7-1-pre-2-21-15:1.1.1.1 riastradh-drm2-base3:1.1.1.1 clang-202566:1.1.1.1 clang-201163:1.1.1.1 clang-199312:1.1.1.1 clang-198450:1.1.1.1 clang-196603:1.1.1.1 clang-195771:1.1.1.1 LLVM:1.1.1; locks; strict; comment @// @; 1.1 date 2013.11.28.14.14.57; author joerg; state Exp; branches 1.1.1.1; next ; commitid ow8OybrawrB1f3fx; 1.1.1.1 date 2013.11.28.14.14.57; author joerg; state Exp; branches 1.1.1.1.4.1 1.1.1.1.8.1 1.1.1.1.12.1; next 1.1.1.2; commitid ow8OybrawrB1f3fx; 1.1.1.2 date 2017.01.11.10.37.21; author joerg; state Exp; branches; next 1.1.1.3; commitid CNnUNfII1jgNmxBz; 1.1.1.3 date 2017.08.01.19.34.37; author joerg; state Exp; branches 1.1.1.3.2.1 1.1.1.3.4.1; next 1.1.1.4; commitid pMuDy65V0VicSx1A; 1.1.1.4 date 2018.07.17.18.31.44; author joerg; state Exp; branches; next 1.1.1.5; commitid wDzL46ALjrCZgwKA; 1.1.1.5 date 2019.11.13.22.19.39; author joerg; state dead; branches; next ; commitid QD8YATxuNG34YJKB; 1.1.1.1.4.1 date 2013.11.28.14.14.57; author yamt; state dead; branches; next 1.1.1.1.4.2; commitid WSrDtL5nYAUyiyBx; 1.1.1.1.4.2 date 2014.05.22.16.18.35; author yamt; state Exp; branches; next ; commitid WSrDtL5nYAUyiyBx; 1.1.1.1.8.1 date 2013.11.28.14.14.57; author tls; state dead; branches; next 1.1.1.1.8.2; commitid jTnpym9Qu0o4R1Nx; 1.1.1.1.8.2 date 2014.08.19.23.47.35; author tls; state Exp; branches; next ; commitid jTnpym9Qu0o4R1Nx; 1.1.1.1.12.1 date 2017.03.20.06.52.48; author pgoyette; state Exp; branches; next ; commitid jjw7cAwgyKq7RfKz; 1.1.1.3.2.1 date 2018.07.28.04.33.29; author pgoyette; state Exp; branches; next ; commitid 1UP1xAIUxv1ZgRLA; 1.1.1.3.4.1 date 2019.06.10.21.45.35; author christos; state Exp; branches; next 1.1.1.3.4.2; commitid jtc8rnCzWiEEHGqB; 1.1.1.3.4.2 date 2020.04.13.07.46.50; author martin; state dead; branches; next ; commitid X01YhRUPVUDaec4C; desc @@ 1.1 log @Initial revision @ text @// RUN: %clang_cc1 -analyze -analyzer-checker=core,debug.ExprInspection -verify %s // expected-no-diagnostics struct X { int *p; int zero; void foo () { reset(p - 1); } void reset(int *in) { while (in != p) // Loop must be entered. zero = 1; } }; int test (int *in) { X littleX; littleX.zero = 0; littleX.p = in; littleX.foo(); return 5/littleX.zero; // no-warning } @ 1.1.1.1 log @Import Clang 3.4rc1 r195771. @ text @@ 1.1.1.1.12.1 log @Sync with HEAD @ text @d1 2 a2 1 // RUN: %clang_cc1 -Wno-unused-value -std=c++14 -analyze -analyzer-checker=core,debug.ExprInspection,alpha.core.PointerArithm -verify %s a22 79 class Base {}; class Derived : public Base {}; void checkPolymorphicUse() { Derived d[10]; Base *p = d; ++p; // expected-warning{{Pointer arithmetic on a pointer to base class is dangerous}} } void checkBitCasts() { long l; char *p = (char*)&l; p = p+2; } void checkBasicarithmetic(int i) { int t[10]; int *p = t; ++p; int a = 5; p = &a; ++p; // expected-warning{{Pointer arithmetic on non-array variables relies on memory layout, which is dangerous}} p = p + 2; // expected-warning{{}} p = 2 + p; // expected-warning{{}} p += 2; // expected-warning{{}} a += p[2]; // expected-warning{{}} p = i*0 + p; p = p + i*0; p += i*0; } void checkArithOnSymbolic(int*p) { ++p; p = p + 2; p = 2 + p; p += 2; (void)p[2]; } struct S { int t[10]; }; void arrayInStruct() { S s; int * p = s.t; ++p; S *sp = new S; p = sp->t; ++p; delete sp; } void checkNew() { int *p = new int; p[1] = 1; // expected-warning{{}} } void InitState(int* state) { state[1] = 1; // expected-warning{{}} } int* getArray(int size) { if (size == 0) return new int; return new int[5]; } void checkConditionalArray() { int* maybeArray = getArray(0); InitState(maybeArray); } void checkMultiDimansionalArray() { int a[5][5]; *(*(a+1)+2) = 2; } @ 1.1.1.2 log @Import Clang pre-4.0.0 r291444. @ text @d1 2 a2 1 // RUN: %clang_cc1 -Wno-unused-value -std=c++14 -analyze -analyzer-checker=core,debug.ExprInspection,alpha.core.PointerArithm -verify %s a22 79 class Base {}; class Derived : public Base {}; void checkPolymorphicUse() { Derived d[10]; Base *p = d; ++p; // expected-warning{{Pointer arithmetic on a pointer to base class is dangerous}} } void checkBitCasts() { long l; char *p = (char*)&l; p = p+2; } void checkBasicarithmetic(int i) { int t[10]; int *p = t; ++p; int a = 5; p = &a; ++p; // expected-warning{{Pointer arithmetic on non-array variables relies on memory layout, which is dangerous}} p = p + 2; // expected-warning{{}} p = 2 + p; // expected-warning{{}} p += 2; // expected-warning{{}} a += p[2]; // expected-warning{{}} p = i*0 + p; p = p + i*0; p += i*0; } void checkArithOnSymbolic(int*p) { ++p; p = p + 2; p = 2 + p; p += 2; (void)p[2]; } struct S { int t[10]; }; void arrayInStruct() { S s; int * p = s.t; ++p; S *sp = new S; p = sp->t; ++p; delete sp; } void checkNew() { int *p = new int; p[1] = 1; // expected-warning{{}} } void InitState(int* state) { state[1] = 1; // expected-warning{{}} } int* getArray(int size) { if (size == 0) return new int; return new int[5]; } void checkConditionalArray() { int* maybeArray = getArray(0); InitState(maybeArray); } void checkMultiDimansionalArray() { int a[5][5]; *(*(a+1)+2) = 2; } @ 1.1.1.3 log @Import clang r309604 from branches/release_50 @ text @d1 1 a1 1 // RUN: %clang_analyze_cc1 -Wno-unused-value -std=c++14 -analyzer-checker=core,debug.ExprInspection,alpha.core.PointerArithm -verify %s @ 1.1.1.3.4.1 log @Sync with HEAD @ text @a100 19 unsigned ptrSubtractionNoCrash(char *Begin, char *End) { auto N = End - Begin; if (Begin) return 0; return N; } // Bug 34309 bool ptrAsIntegerSubtractionNoCrash(__UINTPTR_TYPE__ x, char *p) { __UINTPTR_TYPE__ y = (__UINTPTR_TYPE__)p - 1; return y == x; } // Bug 34374 bool integerAsPtrSubtractionNoCrash(char *p, __UINTPTR_TYPE__ m) { auto n = p - reinterpret_cast((__UINTPTR_TYPE__)1); return n == m; } @ 1.1.1.3.4.2 log @Mostly merge changes from HEAD upto 20200411 @ text @@ 1.1.1.3.2.1 log @Sync with HEAD @ text @a100 19 unsigned ptrSubtractionNoCrash(char *Begin, char *End) { auto N = End - Begin; if (Begin) return 0; return N; } // Bug 34309 bool ptrAsIntegerSubtractionNoCrash(__UINTPTR_TYPE__ x, char *p) { __UINTPTR_TYPE__ y = (__UINTPTR_TYPE__)p - 1; return y == x; } // Bug 34374 bool integerAsPtrSubtractionNoCrash(char *p, __UINTPTR_TYPE__ m) { auto n = p - reinterpret_cast((__UINTPTR_TYPE__)1); return n == m; } @ 1.1.1.4 log @Import clang r337282 from trunk @ text @a100 19 unsigned ptrSubtractionNoCrash(char *Begin, char *End) { auto N = End - Begin; if (Begin) return 0; return N; } // Bug 34309 bool ptrAsIntegerSubtractionNoCrash(__UINTPTR_TYPE__ x, char *p) { __UINTPTR_TYPE__ y = (__UINTPTR_TYPE__)p - 1; return y == x; } // Bug 34374 bool integerAsPtrSubtractionNoCrash(char *p, __UINTPTR_TYPE__ m) { auto n = p - reinterpret_cast((__UINTPTR_TYPE__)1); return n == m; } @ 1.1.1.5 log @Mark old LLVM instance as dead. @ text @@ 1.1.1.1.8.1 log @file ptr-arith.cpp was added on branch tls-maxphys on 2014-08-19 23:47:35 +0000 @ text @d1 22 @ 1.1.1.1.8.2 log @Rebase to HEAD as of a few days ago. @ text @a0 22 // RUN: %clang_cc1 -analyze -analyzer-checker=core,debug.ExprInspection -verify %s // expected-no-diagnostics struct X { int *p; int zero; void foo () { reset(p - 1); } void reset(int *in) { while (in != p) // Loop must be entered. zero = 1; } }; int test (int *in) { X littleX; littleX.zero = 0; littleX.p = in; littleX.foo(); return 5/littleX.zero; // no-warning } @ 1.1.1.1.4.1 log @file ptr-arith.cpp was added on branch yamt-pagecache on 2014-05-22 16:18:35 +0000 @ text @d1 22 @ 1.1.1.1.4.2 log @sync with head. for a reference, the tree before this commit was tagged as yamt-pagecache-tag8. this commit was splitted into small chunks to avoid a limitation of cvs. ("Protocol error: too many arguments") @ text @a0 22 // RUN: %clang_cc1 -analyze -analyzer-checker=core,debug.ExprInspection -verify %s // expected-no-diagnostics struct X { int *p; int zero; void foo () { reset(p - 1); } void reset(int *in) { while (in != p) // Loop must be entered. zero = 1; } }; int test (int *in) { X littleX; littleX.zero = 0; littleX.p = in; littleX.foo(); return 5/littleX.zero; // no-warning } @