dead-stores.c revision 3f64a0e3be2c9408f8256bd3aa9f0ce9e268982c
1ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenek// RUN: %clang_cc1 -Wunused-variable -analyze -analyzer-experimental-internal-checks -analyzer-check-dead-stores -fblocks -verify -Wno-unreachable-code -analyzer-opt-analyze-nested-blocks %s 2ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenek// RUN: %clang_cc1 -Wunused-variable -analyze -analyzer-experimental-internal-checks -analyzer-check-objc-mem -analyzer-store=basic -analyzer-constraints=basic -analyzer-check-dead-stores -fblocks -verify -Wno-unreachable-code -analyzer-opt-analyze-nested-blocks %s 3ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenek// RUN: %clang_cc1 -Wunused-variable -analyze -analyzer-experimental-internal-checks -analyzer-check-objc-mem -analyzer-store=basic -analyzer-constraints=range -analyzer-check-dead-stores -fblocks -verify -Wno-unreachable-code -analyzer-opt-analyze-nested-blocks %s 4ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenek// RUN: %clang_cc1 -Wunused-variable -analyze -analyzer-experimental-internal-checks -analyzer-check-objc-mem -analyzer-store=region -analyzer-constraints=basic -analyzer-check-dead-stores -fblocks -verify -Wno-unreachable-code -analyzer-opt-analyze-nested-blocks %s 5ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenek// RUN: %clang_cc1 -Wunused-variable -analyze -analyzer-experimental-internal-checks -analyzer-check-objc-mem -analyzer-store=region -analyzer-constraints=range -analyzer-check-dead-stores -fblocks -verify -Wno-unreachable-code -analyzer-opt-analyze-nested-blocks %s 68aefcbfd3c0409c26ca44c123a41edd631eab9bcTed Kremenek 749a2fd2758996b6f674babf19c75b3d01e77e2d4Ted Kremenekvoid f1() { 8ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenek int k, y; // expected-warning{{unused variable 'k'}} expected-warning{{unused variable 'y'}} 90fdf06e5eef80ce56ce6499ba662453919b95af1Ted Kremenek int abc=1; 10ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenek long idx=abc+3*5; // expected-warning {{never read}} expected-warning{{unused variable 'idx'}} 11aa395ba050c558b1ebf66c7868165938d98b6a5bTed Kremenek} 128aefcbfd3c0409c26ca44c123a41edd631eab9bcTed Kremenek 1349a2fd2758996b6f674babf19c75b3d01e77e2d4Ted Kremenekvoid f2(void *b) { 148aefcbfd3c0409c26ca44c123a41edd631eab9bcTed Kremenek char *c = (char*)b; // no-warning 15ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenek char *d = b+1; // expected-warning {{never read}} expected-warning{{unused variable 'd'}} 16a316e7b735b12ce6b34961a9dcfaae34f4b08d29Douglas Gregor printf("%s", c); // expected-warning{{implicitly declaring C library function 'printf' with type 'int (char const *, ...)'}} \ 17a316e7b735b12ce6b34961a9dcfaae34f4b08d29Douglas Gregor // expected-note{{please include the header <stdio.h> or explicitly provide a declaration for 'printf'}} 188aefcbfd3c0409c26ca44c123a41edd631eab9bcTed Kremenek} 1974c43a0967d07572dd6907776d91cdb2b2e7179aTed Kremenek 20e030358cc06e1cbce3c2e00ca67c946f9164b2a8Chris Lattnerint f(); 21e030358cc06e1cbce3c2e00ca67c946f9164b2a8Chris Lattner 2249a2fd2758996b6f674babf19c75b3d01e77e2d4Ted Kremenekvoid f3() { 230fdf06e5eef80ce56ce6499ba662453919b95af1Ted Kremenek int r; 240fdf06e5eef80ce56ce6499ba662453919b95af1Ted Kremenek if ((r = f()) != 0) { // no-warning 250fdf06e5eef80ce56ce6499ba662453919b95af1Ted Kremenek int y = r; // no-warning 260fdf06e5eef80ce56ce6499ba662453919b95af1Ted Kremenek printf("the error is: %d\n", y); 270fdf06e5eef80ce56ce6499ba662453919b95af1Ted Kremenek } 2874c43a0967d07572dd6907776d91cdb2b2e7179aTed Kremenek} 2949a2fd2758996b6f674babf19c75b3d01e77e2d4Ted Kremenek 3049a2fd2758996b6f674babf19c75b3d01e77e2d4Ted Kremenekvoid f4(int k) { 3149a2fd2758996b6f674babf19c75b3d01e77e2d4Ted Kremenek 3249a2fd2758996b6f674babf19c75b3d01e77e2d4Ted Kremenek k = 1; 3349a2fd2758996b6f674babf19c75b3d01e77e2d4Ted Kremenek 3449a2fd2758996b6f674babf19c75b3d01e77e2d4Ted Kremenek if (k) 3549a2fd2758996b6f674babf19c75b3d01e77e2d4Ted Kremenek f1(); 3649a2fd2758996b6f674babf19c75b3d01e77e2d4Ted Kremenek 371a654b60ef40e84f3943cdb581795c4d4dae1e45Ted Kremenek k = 2; // expected-warning {{never read}} 3849a2fd2758996b6f674babf19c75b3d01e77e2d4Ted Kremenek} 3993fab7c94008d9e2b1e4ce15784544c6710945feTed Kremenek 40f87821c086a46411883b385c743996a35cc8e154Ted Kremenekvoid f5() { 41f87821c086a46411883b385c743996a35cc8e154Ted Kremenek 42f87821c086a46411883b385c743996a35cc8e154Ted Kremenek int x = 4; // no-warning 43ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenek int *p = &x; // expected-warning{{never read}} expected-warning{{unused variable 'p'}} 44f87821c086a46411883b385c743996a35cc8e154Ted Kremenek 45a23157e6b9e2388edebd3d383dd7acfab6a4c0c0Ted Kremenek} 46a23157e6b9e2388edebd3d383dd7acfab6a4c0c0Ted Kremenek 47a23157e6b9e2388edebd3d383dd7acfab6a4c0c0Ted Kremenekint f6() { 48a23157e6b9e2388edebd3d383dd7acfab6a4c0c0Ted Kremenek 49a23157e6b9e2388edebd3d383dd7acfab6a4c0c0Ted Kremenek int x = 4; 501a654b60ef40e84f3943cdb581795c4d4dae1e45Ted Kremenek ++x; // expected-warning{{never read}} 51a23157e6b9e2388edebd3d383dd7acfab6a4c0c0Ted Kremenek return 1; 52a23157e6b9e2388edebd3d383dd7acfab6a4c0c0Ted Kremenek} 531a654b60ef40e84f3943cdb581795c4d4dae1e45Ted Kremenek 541a654b60ef40e84f3943cdb581795c4d4dae1e45Ted Kremenekint f7(int *p) { 551a654b60ef40e84f3943cdb581795c4d4dae1e45Ted Kremenek // This is allowed for defensive programming. 561a654b60ef40e84f3943cdb581795c4d4dae1e45Ted Kremenek p = 0; // no-warning 571a654b60ef40e84f3943cdb581795c4d4dae1e45Ted Kremenek return 1; 581a654b60ef40e84f3943cdb581795c4d4dae1e45Ted Kremenek} 591a654b60ef40e84f3943cdb581795c4d4dae1e45Ted Kremenek 6093fab7c94008d9e2b1e4ce15784544c6710945feTed Kremenekint f7b(int *p) { 6193fab7c94008d9e2b1e4ce15784544c6710945feTed Kremenek // This is allowed for defensive programming. 6293fab7c94008d9e2b1e4ce15784544c6710945feTed Kremenek p = (0); // no-warning 6393fab7c94008d9e2b1e4ce15784544c6710945feTed Kremenek return 1; 6493fab7c94008d9e2b1e4ce15784544c6710945feTed Kremenek} 6593fab7c94008d9e2b1e4ce15784544c6710945feTed Kremenek 6693fab7c94008d9e2b1e4ce15784544c6710945feTed Kremenekint f7c(int *p) { 6793fab7c94008d9e2b1e4ce15784544c6710945feTed Kremenek // This is allowed for defensive programming. 6893fab7c94008d9e2b1e4ce15784544c6710945feTed Kremenek p = (void*) 0; // no-warning 6993fab7c94008d9e2b1e4ce15784544c6710945feTed Kremenek return 1; 7093fab7c94008d9e2b1e4ce15784544c6710945feTed Kremenek} 7193fab7c94008d9e2b1e4ce15784544c6710945feTed Kremenek 7293fab7c94008d9e2b1e4ce15784544c6710945feTed Kremenekint f7d(int *p) { 7393fab7c94008d9e2b1e4ce15784544c6710945feTed Kremenek // This is allowed for defensive programming. 7493fab7c94008d9e2b1e4ce15784544c6710945feTed Kremenek p = (void*) (0); // no-warning 7593fab7c94008d9e2b1e4ce15784544c6710945feTed Kremenek return 1; 7693fab7c94008d9e2b1e4ce15784544c6710945feTed Kremenek} 7793fab7c94008d9e2b1e4ce15784544c6710945feTed Kremenek 781a654b60ef40e84f3943cdb581795c4d4dae1e45Ted Kremenekint f8(int *p) { 794489fe10fa073eb326e2c8906db170f009050911Daniel Dunbar extern int *baz(); 80f66d5cd8926541099def3cb187d56eff60d3be99John McCall if ((p = baz())) // expected-warning{{Although the value}} 811a654b60ef40e84f3943cdb581795c4d4dae1e45Ted Kremenek return 1; 821a654b60ef40e84f3943cdb581795c4d4dae1e45Ted Kremenek return 0; 831a654b60ef40e84f3943cdb581795c4d4dae1e45Ted Kremenek} 841a654b60ef40e84f3943cdb581795c4d4dae1e45Ted Kremenek 852cfac226b028e5a2165af077268f70cd2ab4b1a8Ted Kremenekint f9() { 862cfac226b028e5a2165af077268f70cd2ab4b1a8Ted Kremenek int x = 4; 872cfac226b028e5a2165af077268f70cd2ab4b1a8Ted Kremenek x = x + 10; // expected-warning{{never read}} 882cfac226b028e5a2165af077268f70cd2ab4b1a8Ted Kremenek return 1; 892cfac226b028e5a2165af077268f70cd2ab4b1a8Ted Kremenek} 902cfac226b028e5a2165af077268f70cd2ab4b1a8Ted Kremenek 912cfac226b028e5a2165af077268f70cd2ab4b1a8Ted Kremenekint f10() { 922cfac226b028e5a2165af077268f70cd2ab4b1a8Ted Kremenek int x = 4; 932cfac226b028e5a2165af077268f70cd2ab4b1a8Ted Kremenek x = 10 + x; // expected-warning{{never read}} 942cfac226b028e5a2165af077268f70cd2ab4b1a8Ted Kremenek return 1; 952cfac226b028e5a2165af077268f70cd2ab4b1a8Ted Kremenek} 962cfac226b028e5a2165af077268f70cd2ab4b1a8Ted Kremenek 978b00b6e80dbeb04dd919699f7818344dd4cbaad9Ted Kremenekint f11() { 988b00b6e80dbeb04dd919699f7818344dd4cbaad9Ted Kremenek int x = 4; 99380277e46ec1d2d9abedcddf357ceea935cbe576Ted Kremenek return x++; // expected-warning{{never read}} 1008b00b6e80dbeb04dd919699f7818344dd4cbaad9Ted Kremenek} 1018b00b6e80dbeb04dd919699f7818344dd4cbaad9Ted Kremenek 102380277e46ec1d2d9abedcddf357ceea935cbe576Ted Kremenekint f11b() { 103380277e46ec1d2d9abedcddf357ceea935cbe576Ted Kremenek int x = 4; 1047f5fce7200fdbf03f7d70134a57271e584fcb766Ted Kremenek return ((((++x)))); // no-warning 105380277e46ec1d2d9abedcddf357ceea935cbe576Ted Kremenek} 106380277e46ec1d2d9abedcddf357ceea935cbe576Ted Kremenek 107fc7ff5540412f8003024e1b4940fb8408dff2ca6Ted Kremenekint f12a(int y) { 108ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenek int x = y; // expected-warning{{unused variable 'x'}} 109fc7ff5540412f8003024e1b4940fb8408dff2ca6Ted Kremenek return 1; 110fc7ff5540412f8003024e1b4940fb8408dff2ca6Ted Kremenek} 111fc7ff5540412f8003024e1b4940fb8408dff2ca6Ted Kremenekint f12b(int y) { 112fc7ff5540412f8003024e1b4940fb8408dff2ca6Ted Kremenek int x __attribute__((unused)) = y; // no-warning 113fc7ff5540412f8003024e1b4940fb8408dff2ca6Ted Kremenek return 1; 114fc7ff5540412f8003024e1b4940fb8408dff2ca6Ted Kremenek} 115ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenekint f12c(int y) { 116ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenek // Allow initialiation of scalar variables by parameters as a form of 117ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenek // defensive programming. 118ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenek int x = y; // no-warning 119ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenek x = 1; 120ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenek return x; 121ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenek} 1222cfac226b028e5a2165af077268f70cd2ab4b1a8Ted Kremenek 123efe88f5776b42ec2defb8ba29269a6c3683e9485Ted Kremenek// Filed with PR 2630. This code should produce no warnings. 124efe88f5776b42ec2defb8ba29269a6c3683e9485Ted Kremenekint f13(void) 125efe88f5776b42ec2defb8ba29269a6c3683e9485Ted Kremenek{ 126efe88f5776b42ec2defb8ba29269a6c3683e9485Ted Kremenek int a = 1; 127efe88f5776b42ec2defb8ba29269a6c3683e9485Ted Kremenek int b, c = b = a + a; 128efe88f5776b42ec2defb8ba29269a6c3683e9485Ted Kremenek 129efe88f5776b42ec2defb8ba29269a6c3683e9485Ted Kremenek if (b > 0) 130efe88f5776b42ec2defb8ba29269a6c3683e9485Ted Kremenek return (0); 131efe88f5776b42ec2defb8ba29269a6c3683e9485Ted Kremenek 132efe88f5776b42ec2defb8ba29269a6c3683e9485Ted Kremenek return (a + b + c); 133efe88f5776b42ec2defb8ba29269a6c3683e9485Ted Kremenek} 134efe88f5776b42ec2defb8ba29269a6c3683e9485Ted Kremenek 135b497ebdce35c708e902db2d49183925a612b4914Ted Kremenek// Filed with PR 2763. 13684fa6b90abf73e8cc539c9947ed5a6286f588569Ted Kremenekint f14(int count) { 137b497ebdce35c708e902db2d49183925a612b4914Ted Kremenek int index, nextLineIndex; 138b497ebdce35c708e902db2d49183925a612b4914Ted Kremenek for (index = 0; index < count; index = nextLineIndex+1) { 139b497ebdce35c708e902db2d49183925a612b4914Ted Kremenek nextLineIndex = index+1; // no-warning 140b497ebdce35c708e902db2d49183925a612b4914Ted Kremenek continue; 141b497ebdce35c708e902db2d49183925a612b4914Ted Kremenek } 142b497ebdce35c708e902db2d49183925a612b4914Ted Kremenek return index; 143b497ebdce35c708e902db2d49183925a612b4914Ted Kremenek} 14484fa6b90abf73e8cc539c9947ed5a6286f588569Ted Kremenek 14584fa6b90abf73e8cc539c9947ed5a6286f588569Ted Kremenek// Test case for <rdar://problem/6248086> 14684fa6b90abf73e8cc539c9947ed5a6286f588569Ted Kremenekvoid f15(unsigned x, unsigned y) { 14784fa6b90abf73e8cc539c9947ed5a6286f588569Ted Kremenek int count = x * y; // no-warning 148ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenek int z[count]; // expected-warning{{unused variable 'z'}} 14984fa6b90abf73e8cc539c9947ed5a6286f588569Ted Kremenek} 15084fa6b90abf73e8cc539c9947ed5a6286f588569Ted Kremenek 151610a09e409bea151a42dd907768f1e0c4b103f1fTed Kremenekint f16(int x) { 152610a09e409bea151a42dd907768f1e0c4b103f1fTed Kremenek x = x * 2; 153d2025e26738c3017af6685e342a3a746cdf8249fTed Kremenek x = sizeof(int [x = (x || x + 1) * 2]) // expected-warning{{Although the value stored to 'x' is used}} 154d2025e26738c3017af6685e342a3a746cdf8249fTed Kremenek ? 5 : 8; 155610a09e409bea151a42dd907768f1e0c4b103f1fTed Kremenek return x; 156610a09e409bea151a42dd907768f1e0c4b103f1fTed Kremenek} 157610a09e409bea151a42dd907768f1e0c4b103f1fTed Kremenek 1583b58786f85aaa173e122f6eaff0b6efa233d59a2Ted Kremenek// Self-assignments should not be flagged as dead stores. 159a5495eadc816b29954e22df55aa9a9d6bb41429cMike Stumpvoid f17() { 1603b58786f85aaa173e122f6eaff0b6efa233d59a2Ted Kremenek int x = 1; 1613b58786f85aaa173e122f6eaff0b6efa233d59a2Ted Kremenek x = x; // no-warning 1623b58786f85aaa173e122f6eaff0b6efa233d59a2Ted Kremenek} 1637f5fce7200fdbf03f7d70134a57271e584fcb766Ted Kremenek 1647f5fce7200fdbf03f7d70134a57271e584fcb766Ted Kremenek// <rdar://problem/6506065> 1657f5fce7200fdbf03f7d70134a57271e584fcb766Ted Kremenek// The values of dead stores are only "consumed" in an enclosing expression 166cd7bf230a77c550115e4a78ee371fc49a7563692Mike Stump// what that value is actually used. In other words, don't say "Although the 167cd7bf230a77c550115e4a78ee371fc49a7563692Mike Stump// value stored to 'x' is used...". 1687f5fce7200fdbf03f7d70134a57271e584fcb766Ted Kremenekint f18() { 1697f5fce7200fdbf03f7d70134a57271e584fcb766Ted Kremenek int x = 0; // no-warning 1707f5fce7200fdbf03f7d70134a57271e584fcb766Ted Kremenek if (1) 1717f5fce7200fdbf03f7d70134a57271e584fcb766Ted Kremenek x = 10; // expected-warning{{Value stored to 'x' is never read}} 1727f5fce7200fdbf03f7d70134a57271e584fcb766Ted Kremenek while (1) 1737f5fce7200fdbf03f7d70134a57271e584fcb766Ted Kremenek x = 10; // expected-warning{{Value stored to 'x' is never read}} 1747f5fce7200fdbf03f7d70134a57271e584fcb766Ted Kremenek do 1757f5fce7200fdbf03f7d70134a57271e584fcb766Ted Kremenek x = 10; // expected-warning{{Value stored to 'x' is never read}} 1767f5fce7200fdbf03f7d70134a57271e584fcb766Ted Kremenek while (1); 1777f5fce7200fdbf03f7d70134a57271e584fcb766Ted Kremenek 1787f5fce7200fdbf03f7d70134a57271e584fcb766Ted Kremenek return (x = 10); // expected-warning{{Although the value stored to 'x' is used in the enclosing expression, the value is never actually read from 'x'}} 1797f5fce7200fdbf03f7d70134a57271e584fcb766Ted Kremenek} 180d3098ee64c069a3eff4d2d0a5d655d968c7b5dd2Ted Kremenek 181d3098ee64c069a3eff4d2d0a5d655d968c7b5dd2Ted Kremenek// PR 3514: false positive `dead initialization` warning for init to global 182d3098ee64c069a3eff4d2d0a5d655d968c7b5dd2Ted Kremenek// http://llvm.org/bugs/show_bug.cgi?id=3514 183d3098ee64c069a3eff4d2d0a5d655d968c7b5dd2Ted Kremenekextern const int MyConstant; 184d3098ee64c069a3eff4d2d0a5d655d968c7b5dd2Ted Kremenekint f19(void) { 185d3098ee64c069a3eff4d2d0a5d655d968c7b5dd2Ted Kremenek int x = MyConstant; // no-warning 186d3098ee64c069a3eff4d2d0a5d655d968c7b5dd2Ted Kremenek x = 1; 187d3098ee64c069a3eff4d2d0a5d655d968c7b5dd2Ted Kremenek return x; 188d3098ee64c069a3eff4d2d0a5d655d968c7b5dd2Ted Kremenek} 189d3098ee64c069a3eff4d2d0a5d655d968c7b5dd2Ted Kremenek 19028433ff063fe5ba5eac486d4bfcfa9e210097772Ted Kremenekint f19b(void) { // This case is the same as f19. 191d3098ee64c069a3eff4d2d0a5d655d968c7b5dd2Ted Kremenek const int MyConstant = 0; 19228433ff063fe5ba5eac486d4bfcfa9e210097772Ted Kremenek int x = MyConstant; // no-warning 193d3098ee64c069a3eff4d2d0a5d655d968c7b5dd2Ted Kremenek x = 1; 194d3098ee64c069a3eff4d2d0a5d655d968c7b5dd2Ted Kremenek return x; 195d3098ee64c069a3eff4d2d0a5d655d968c7b5dd2Ted Kremenek} 196632d1ece2715b1c8a0c99e1b8b487f4c148c89d5Ted Kremenek 197632d1ece2715b1c8a0c99e1b8b487f4c148c89d5Ted Kremenekvoid f20(void) { 198632d1ece2715b1c8a0c99e1b8b487f4c148c89d5Ted Kremenek int x = 1; // no-warning 199632d1ece2715b1c8a0c99e1b8b487f4c148c89d5Ted Kremenek#pragma unused(x) 200632d1ece2715b1c8a0c99e1b8b487f4c148c89d5Ted Kremenek} 201632d1ece2715b1c8a0c99e1b8b487f4c148c89d5Ted Kremenek 202cd7bf230a77c550115e4a78ee371fc49a7563692Mike Stumpvoid halt() __attribute__((noreturn)); 203cd7bf230a77c550115e4a78ee371fc49a7563692Mike Stumpint f21() { 204cd7bf230a77c550115e4a78ee371fc49a7563692Mike Stump int x = 4; 205cd7bf230a77c550115e4a78ee371fc49a7563692Mike Stump 206cd7bf230a77c550115e4a78ee371fc49a7563692Mike Stump ++x; // expected-warning{{never read}} 207cd7bf230a77c550115e4a78ee371fc49a7563692Mike Stump if (1) { 208cd7bf230a77c550115e4a78ee371fc49a7563692Mike Stump halt(); 209cd7bf230a77c550115e4a78ee371fc49a7563692Mike Stump (void)x; 210cd7bf230a77c550115e4a78ee371fc49a7563692Mike Stump } 211cd7bf230a77c550115e4a78ee371fc49a7563692Mike Stump return 1; 212cd7bf230a77c550115e4a78ee371fc49a7563692Mike Stump} 213e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump 214e5af3ce53ec58995b09381ba645ab2117a46647bMike Stumpint j; 215e5af3ce53ec58995b09381ba645ab2117a46647bMike Stumpvoid f22() { 216e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump int x = 4; 217e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump int y1 = 4; 218e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump int y2 = 4; 219e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump int y3 = 4; 220e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump int y4 = 4; 221e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump int y5 = 4; 222e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump int y6 = 4; 223e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump int y7 = 4; 224e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump int y8 = 4; 225e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump int y9 = 4; 226e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump int y10 = 4; 2275f20363dc8ea094b3f6139f52084beb10d6fcd85Mike Stump int y11 = 4; 2285f20363dc8ea094b3f6139f52084beb10d6fcd85Mike Stump int y12 = 4; 229fefb9f7009702befaf715e7a8debc9505c3c8634Mike Stump int y13 = 4; 230fefb9f7009702befaf715e7a8debc9505c3c8634Mike Stump int y14 = 4; 231fefb9f7009702befaf715e7a8debc9505c3c8634Mike Stump int y15 = 4; 2328f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump int y16 = 4; 2338f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump int y17 = 4; 2348f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump int y18 = 4; 23522cd6581188bbbc6bedaca64ab171b1187a1c06aMike Stump int y19 = 4; 23622cd6581188bbbc6bedaca64ab171b1187a1c06aMike Stump int y20 = 4; 237e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump 238e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump ++x; // expected-warning{{never read}} 239e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump ++y1; 240e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump ++y2; 241e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump ++y3; 242e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump ++y4; 243e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump ++y5; 244e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump ++y6; 245e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump ++y7; 246e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump ++y8; 247e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump ++y9; 248e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump ++y10; 2495f20363dc8ea094b3f6139f52084beb10d6fcd85Mike Stump ++y11; 2505f20363dc8ea094b3f6139f52084beb10d6fcd85Mike Stump ++y12; 251fefb9f7009702befaf715e7a8debc9505c3c8634Mike Stump ++y13; 252fefb9f7009702befaf715e7a8debc9505c3c8634Mike Stump ++y14; 253fefb9f7009702befaf715e7a8debc9505c3c8634Mike Stump ++y15; 2548f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump ++y16; 2558f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump ++y17; 2568f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump ++y18; 25722cd6581188bbbc6bedaca64ab171b1187a1c06aMike Stump ++y19; 25822cd6581188bbbc6bedaca64ab171b1187a1c06aMike Stump ++y20; 259e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump 260e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump switch (j) { 261e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump case 1: 262e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump if (0) 263e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)x; 264e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump if (1) { 265e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)y1; 266e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump return; 267e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump } 268e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)x; 269e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump break; 270e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump case 2: 271e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump if (0) 272e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)x; 273e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump else { 274e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)y2; 275e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump return; 276e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump } 277e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)x; 278e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump break; 279e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump case 3: 280e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump if (1) { 281e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)y3; 282e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump return; 283e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump } else 284e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)x; 285e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)x; 286e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump break; 287e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump case 4: 288e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump 0 ? : ((void)y4, ({ return; })); 289e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)x; 290e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump break; 291e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump case 5: 292e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump 1 ? : (void)x; 293e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump 0 ? (void)x : ((void)y5, ({ return; })); 294e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)x; 295e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump break; 296e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump case 6: 297e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump 1 ? ((void)y6, ({ return; })) : (void)x; 298e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)x; 299e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump break; 300e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump case 7: 301e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)(0 && x); 302e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)y7; 303e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)(0 || (y8, ({ return; }), 1)); 304e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)x; 305e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump break; 306e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump case 8: 307e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)(1 && (y9, ({ return; }), 1)); 308e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)x; 309e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump break; 310e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump case 9: 311e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)(1 || x); 312e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump (void)y10; 3135f20363dc8ea094b3f6139f52084beb10d6fcd85Mike Stump break; 3145f20363dc8ea094b3f6139f52084beb10d6fcd85Mike Stump case 10: 3158f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump while (0) { 3168f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump (void)x; 3175f20363dc8ea094b3f6139f52084beb10d6fcd85Mike Stump } 3188f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump (void)y11; 3195f20363dc8ea094b3f6139f52084beb10d6fcd85Mike Stump break; 3205f20363dc8ea094b3f6139f52084beb10d6fcd85Mike Stump case 11: 3218f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump while (1) { 3228f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump (void)y12; 3235f20363dc8ea094b3f6139f52084beb10d6fcd85Mike Stump } 3248f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump (void)x; 3255f20363dc8ea094b3f6139f52084beb10d6fcd85Mike Stump break; 326fefb9f7009702befaf715e7a8debc9505c3c8634Mike Stump case 12: 3278f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump do { 328fefb9f7009702befaf715e7a8debc9505c3c8634Mike Stump (void)y13; 3298f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump } while (0); 3308f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump (void)y14; 3318f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump break; 3328f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump case 13: 3338f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump do { 3348f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump (void)y15; 3358f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump } while (1); 3368f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump (void)x; 3378f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump break; 3388f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump case 14: 3398f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump for (;;) { 3408f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump (void)y16; 341fefb9f7009702befaf715e7a8debc9505c3c8634Mike Stump } 342fefb9f7009702befaf715e7a8debc9505c3c8634Mike Stump (void)x; 343fefb9f7009702befaf715e7a8debc9505c3c8634Mike Stump break; 3448f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump case 15: 345fefb9f7009702befaf715e7a8debc9505c3c8634Mike Stump for (;1;) { 3468f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump (void)y17; 347fefb9f7009702befaf715e7a8debc9505c3c8634Mike Stump } 348fefb9f7009702befaf715e7a8debc9505c3c8634Mike Stump (void)x; 349fefb9f7009702befaf715e7a8debc9505c3c8634Mike Stump break; 3508f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump case 16: 351fefb9f7009702befaf715e7a8debc9505c3c8634Mike Stump for (;0;) { 352fefb9f7009702befaf715e7a8debc9505c3c8634Mike Stump (void)x; 353fefb9f7009702befaf715e7a8debc9505c3c8634Mike Stump } 3548f9893a2beeacd5149bd2d3d4c6e130516915068Mike Stump (void)y18; 355fefb9f7009702befaf715e7a8debc9505c3c8634Mike Stump break; 35622cd6581188bbbc6bedaca64ab171b1187a1c06aMike Stump case 17: 35722cd6581188bbbc6bedaca64ab171b1187a1c06aMike Stump __builtin_choose_expr(0, (void)x, ((void)y19, ({ return; }))); 35822cd6581188bbbc6bedaca64ab171b1187a1c06aMike Stump (void)x; 35922cd6581188bbbc6bedaca64ab171b1187a1c06aMike Stump break; 36022cd6581188bbbc6bedaca64ab171b1187a1c06aMike Stump case 19: 36122cd6581188bbbc6bedaca64ab171b1187a1c06aMike Stump __builtin_choose_expr(1, ((void)y20, ({ return; })), (void)x); 36222cd6581188bbbc6bedaca64ab171b1187a1c06aMike Stump (void)x; 36322cd6581188bbbc6bedaca64ab171b1187a1c06aMike Stump break; 364e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump } 365e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump} 3663a9763491c41fe140a8777e0a71e046c56c9cbdbTed Kremenek 3673a9763491c41fe140a8777e0a71e046c56c9cbdbTed Kremenekvoid f23_aux(const char* s); 3683a9763491c41fe140a8777e0a71e046c56c9cbdbTed Kremenekvoid f23(int argc, char **argv) { 3693a9763491c41fe140a8777e0a71e046c56c9cbdbTed Kremenek int shouldLog = (argc > 1); // no-warning 3703a9763491c41fe140a8777e0a71e046c56c9cbdbTed Kremenek ^{ 3713a9763491c41fe140a8777e0a71e046c56c9cbdbTed Kremenek if (shouldLog) f23_aux("I did too use it!\n"); 3723a9763491c41fe140a8777e0a71e046c56c9cbdbTed Kremenek else f23_aux("I shouldn't log. Wait.. d'oh!\n"); 3733a9763491c41fe140a8777e0a71e046c56c9cbdbTed Kremenek }(); 3743a9763491c41fe140a8777e0a71e046c56c9cbdbTed Kremenek} 3753a9763491c41fe140a8777e0a71e046c56c9cbdbTed Kremenek 3763a9763491c41fe140a8777e0a71e046c56c9cbdbTed Kremenekvoid f23_pos(int argc, char **argv) { 377ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenek int shouldLog = (argc > 1); // expected-warning{{Value stored to 'shouldLog' during its initialization is never read}} expected-warning{{unused variable 'shouldLog'}} 3783a9763491c41fe140a8777e0a71e046c56c9cbdbTed Kremenek ^{ 3793a9763491c41fe140a8777e0a71e046c56c9cbdbTed Kremenek f23_aux("I did too use it!\n"); 3803a9763491c41fe140a8777e0a71e046c56c9cbdbTed Kremenek }(); 3813a9763491c41fe140a8777e0a71e046c56c9cbdbTed Kremenek} 3829a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek 3839a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenekvoid f24_A(int y) { 3849a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek // FIXME: One day this should be reported as dead since 'z = x + y' is dead. 3859a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek int x = (y > 2); // no-warning 3869a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek ^ { 387ebd42f40803396d63bc59b77285d088cca61f53fTed Kremenek int z = x + y; // expected-warning{{Value stored to 'z' during its initialization is never read}} expected-warning{{unused variable 'z'}} 3889a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek }(); 3899a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek} 3909a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek 3919a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenekvoid f24_B(int y) { 3929a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek // FIXME: One day this should be reported as dead since 'x' is just overwritten. 3939a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek __block int x = (y > 2); // no-warning 3949a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek ^{ 3959a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek // FIXME: This should eventually be a dead store since it is never read either. 3969a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek x = 5; // no-warning 3979a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek }(); 3989a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek} 3999a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek 4009a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenekint f24_C(int y) { 4019a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek // FIXME: One day this should be reported as dead since 'x' is just overwritten. 4029a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek __block int x = (y > 2); // no-warning 4039a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek ^{ 4049a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek x = 5; // no-warning 4059a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek }(); 4069a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek return x; 4079a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek} 4089a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek 4099a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenekint f24_D(int y) { 4109a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek __block int x = (y > 2); // no-warning 4119a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek ^{ 4129a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek if (y > 4) 4139a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek x = 5; // no-warning 4149a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek }(); 4159a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek return x; 4169a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek} 4179a0459c0f59a09ac7287ca1f49083fc6b31e4142Ted Kremenek 41874635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenek// This example shows that writing to a variable captured by a block means that it might 41974635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenek// not be dead. 42074635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenekint f25(int y) { 42174635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenek __block int x = (y > 2); 42274635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenek __block int z = 0; 42374635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenek void (^foo)() = ^{ z = x + y; }; 42474635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenek x = 4; // no-warning 42574635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenek foo(); 42674635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenek return z; 42774635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenek} 42874635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenek 42974635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenek// This test is mostly the same as 'f25', but shows that the heuristic of pruning out dead 43074635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenek// stores for variables that are just marked '__block' is overly conservative. 43174635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenekint f25_b(int y) { 43274635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenek // FIXME: we should eventually report a dead store here. 43374635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenek __block int x = (y > 2); 43474635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenek __block int z = 0; 43574635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenek x = 4; // no-warning 43674635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenek return z; 43774635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenek} 43874635d8cd3c367890735dc4af2c2825a7e4b434cTed Kremenek 4392cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenekint f26_nestedblocks() { 4402cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek int z; 4412cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek z = 1; 4422cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek __block int y = 0; 4432cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek ^{ 4442cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek int k; 4452cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek k = 1; // expected-warning{{Value stored to 'k' is never read}} 4462cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek ^{ 4472cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek y = z + 1; 4482cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek }(); 4492cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek }(); 4502cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek return y; 4512cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek} 4522cfe28b6a061e72c6c8726d7ecb879093a1ab7a3Ted Kremenek 4533f64a0e3be2c9408f8256bd3aa9f0ce9e268982cTed Kremenek// The FOREACH macro in QT uses 'break' statements within statement expressions 4543f64a0e3be2c9408f8256bd3aa9f0ce9e268982cTed Kremenek// placed within the increment code of for loops. 4553f64a0e3be2c9408f8256bd3aa9f0ce9e268982cTed Kremenekvoid rdar8014335() { 4563f64a0e3be2c9408f8256bd3aa9f0ce9e268982cTed Kremenek for (int i = 0 ; i != 10 ; ({ break; })) { 4573f64a0e3be2c9408f8256bd3aa9f0ce9e268982cTed Kremenek for ( ; ; ({ ++i; break; })) ; 4583f64a0e3be2c9408f8256bd3aa9f0ce9e268982cTed Kremenek // Note that the next value stored to 'i' is never executed 4593f64a0e3be2c9408f8256bd3aa9f0ce9e268982cTed Kremenek // because the next statement to be executed is the 'break' 4603f64a0e3be2c9408f8256bd3aa9f0ce9e268982cTed Kremenek // in the increment code of the first loop. 4613f64a0e3be2c9408f8256bd3aa9f0ce9e268982cTed Kremenek i = i * 3; // expected-warning{{Value stored to 'i' is never read}} 4623f64a0e3be2c9408f8256bd3aa9f0ce9e268982cTed Kremenek } 4633f64a0e3be2c9408f8256bd3aa9f0ce9e268982cTed Kremenek} 4643f64a0e3be2c9408f8256bd3aa9f0ce9e268982cTed Kremenek 465