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llvm-project/clang/test/CodeGen/bounds-checking.c

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Split -fsanitize=bounds to -fsanitize=array-bounds (for the frontend-inserted check using the ubsan runtime) and -fsanitize=local-bounds (for the middle-end check which inserts traps). Remove -fsanitize=local-bounds from -fsanitize=undefined. It does not produce useful diagnostics and has false positives (PR17635), and is not a good compromise position between UBSan's checks and ASan's checks. Map -fbounds-checking to -fsanitize=local-bounds to restore Clang's historical behavior for that flag. llvm-svn: 193205
2013-10-23 06:51:04 +08:00
// RUN: %clang_cc1 -fsanitize=local-bounds -emit-llvm -triple x86_64-apple-darwin10 %s -o - | FileCheck %s
[PM] Wire up support for the bounds checking sanitizer with the new PM. Not much interesting here. Mostly wiring things together. One thing worth noting is that the approach is substantially different from the old PM. Here, the -O0 case works fundamentally differently in that we just directly build the pipeline without any callbacks or other cruft. In some ways, this is nice and clean. However, I don't like that it causes the sanitizers to be enabled with different changes at different times. =/ Suggestions for a better way to do this are welcome. Differential Revision: https://reviews.llvm.org/D39085 llvm-svn: 318131
2017-11-14 09:59:18 +08:00
// RUN: %clang_cc1 -fsanitize=local-bounds -fexperimental-new-pass-manager -emit-llvm -triple x86_64-apple-darwin10 %s -o - | FileCheck %s
Fix -fsanitize=array-bound to treat T[0] union members as flexible array members regardless of whether they're the last member of the union.
2020-03-19 06:46:31 +08:00
// RUN: %clang_cc1 -fsanitize=array-bounds -O -fsanitize-trap=array-bounds -emit-llvm -triple x86_64-apple-darwin10 -DNO_DYNAMIC %s -o - | FileCheck %s --check-prefixes=CHECK,NONLOCAL
// RUN: %clang_cc1 -fsanitize=array-bounds -O -fsanitize-trap=array-bounds -fexperimental-new-pass-manager -emit-llvm -triple x86_64-apple-darwin10 -DNO_DYNAMIC %s -o - | FileCheck %s --check-prefixes=CHECK,NONLOCAL
[PM] Require a registered x86 target for this test which uses the x86 triple. llvm-svn: 318137
2017-11-14 13:20:03 +08:00
//
// REQUIRES: x86-registered-target
update calls to objectsize intrinsic to match LLVM r156473 add a test for -fbounds-checking code generation llvm-svn: 156474
2012-05-09 23:53:34 +08:00
Split -fsanitize=bounds to -fsanitize=array-bounds (for the frontend-inserted check using the ubsan runtime) and -fsanitize=local-bounds (for the middle-end check which inserts traps). Remove -fsanitize=local-bounds from -fsanitize=undefined. It does not produce useful diagnostics and has false positives (PR17635), and is not a good compromise position between UBSan's checks and ASan's checks. Map -fbounds-checking to -fsanitize=local-bounds to restore Clang's historical behavior for that flag. llvm-svn: 193205
2013-10-23 06:51:04 +08:00
// CHECK-LABEL: @f
update calls to objectsize intrinsic to match LLVM r156473 add a test for -fbounds-checking code generation llvm-svn: 156474
2012-05-09 23:53:34 +08:00
double f(int b, int i) {
double a[b];
Split -fsanitize=bounds to -fsanitize=array-bounds (for the frontend-inserted check using the ubsan runtime) and -fsanitize=local-bounds (for the middle-end check which inserts traps). Remove -fsanitize=local-bounds from -fsanitize=undefined. It does not produce useful diagnostics and has false positives (PR17635), and is not a good compromise position between UBSan's checks and ASan's checks. Map -fbounds-checking to -fsanitize=local-bounds to restore Clang's historical behavior for that flag. llvm-svn: 193205
2013-10-23 06:51:04 +08:00
// CHECK: call {{.*}} @llvm.trap
update calls to objectsize intrinsic to match LLVM r156473 add a test for -fbounds-checking code generation llvm-svn: 156474
2012-05-09 23:53:34 +08:00
return a[i];
}
Split -fsanitize=bounds to -fsanitize=array-bounds (for the frontend-inserted check using the ubsan runtime) and -fsanitize=local-bounds (for the middle-end check which inserts traps). Remove -fsanitize=local-bounds from -fsanitize=undefined. It does not produce useful diagnostics and has false positives (PR17635), and is not a good compromise position between UBSan's checks and ASan's checks. Map -fbounds-checking to -fsanitize=local-bounds to restore Clang's historical behavior for that flag. llvm-svn: 193205
2013-10-23 06:51:04 +08:00
// CHECK-LABEL: @f2
update calls to objectsize intrinsic to match LLVM r156473 add a test for -fbounds-checking code generation llvm-svn: 156474
2012-05-09 23:53:34 +08:00
void f2() {
wire -fbounds-checking to the new LLVM bounds checking pass llvm-svn: 157262
2012-05-23 01:19:45 +08:00
// everything is constant; no trap possible
Split -fsanitize=bounds to -fsanitize=array-bounds (for the frontend-inserted check using the ubsan runtime) and -fsanitize=local-bounds (for the middle-end check which inserts traps). Remove -fsanitize=local-bounds from -fsanitize=undefined. It does not produce useful diagnostics and has false positives (PR17635), and is not a good compromise position between UBSan's checks and ASan's checks. Map -fbounds-checking to -fsanitize=local-bounds to restore Clang's historical behavior for that flag. llvm-svn: 193205
2013-10-23 06:51:04 +08:00
// CHECK-NOT: call {{.*}} @llvm.trap
update calls to objectsize intrinsic to match LLVM r156473 add a test for -fbounds-checking code generation llvm-svn: 156474
2012-05-09 23:53:34 +08:00
int a[2];
a[1] = 42;
Split -fsanitize=bounds to -fsanitize=array-bounds (for the frontend-inserted check using the ubsan runtime) and -fsanitize=local-bounds (for the middle-end check which inserts traps). Remove -fsanitize=local-bounds from -fsanitize=undefined. It does not produce useful diagnostics and has false positives (PR17635), and is not a good compromise position between UBSan's checks and ASan's checks. Map -fbounds-checking to -fsanitize=local-bounds to restore Clang's historical behavior for that flag. llvm-svn: 193205
2013-10-23 06:51:04 +08:00
#ifndef NO_DYNAMIC
update calls to objectsize intrinsic to match LLVM r156473 add a test for -fbounds-checking code generation llvm-svn: 156474
2012-05-09 23:53:34 +08:00
short *b = malloc(64);
wire -fbounds-checking to the new LLVM bounds checking pass llvm-svn: 157262
2012-05-23 01:19:45 +08:00
b[5] = *a + a[1] + 2;
Split -fsanitize=bounds to -fsanitize=array-bounds (for the frontend-inserted check using the ubsan runtime) and -fsanitize=local-bounds (for the middle-end check which inserts traps). Remove -fsanitize=local-bounds from -fsanitize=undefined. It does not produce useful diagnostics and has false positives (PR17635), and is not a good compromise position between UBSan's checks and ASan's checks. Map -fbounds-checking to -fsanitize=local-bounds to restore Clang's historical behavior for that flag. llvm-svn: 193205
2013-10-23 06:51:04 +08:00
#endif
wire -fbounds-checking to the new LLVM bounds checking pass llvm-svn: 157262
2012-05-23 01:19:45 +08:00
}
Split -fsanitize=bounds to -fsanitize=array-bounds (for the frontend-inserted check using the ubsan runtime) and -fsanitize=local-bounds (for the middle-end check which inserts traps). Remove -fsanitize=local-bounds from -fsanitize=undefined. It does not produce useful diagnostics and has false positives (PR17635), and is not a good compromise position between UBSan's checks and ASan's checks. Map -fbounds-checking to -fsanitize=local-bounds to restore Clang's historical behavior for that flag. llvm-svn: 193205
2013-10-23 06:51:04 +08:00
// CHECK-LABEL: @f3
wire -fbounds-checking to the new LLVM bounds checking pass llvm-svn: 157262
2012-05-23 01:19:45 +08:00
void f3() {
int a[1];
Split -fsanitize=bounds to -fsanitize=array-bounds (for the frontend-inserted check using the ubsan runtime) and -fsanitize=local-bounds (for the middle-end check which inserts traps). Remove -fsanitize=local-bounds from -fsanitize=undefined. It does not produce useful diagnostics and has false positives (PR17635), and is not a good compromise position between UBSan's checks and ASan's checks. Map -fbounds-checking to -fsanitize=local-bounds to restore Clang's historical behavior for that flag. llvm-svn: 193205
2013-10-23 06:51:04 +08:00
// CHECK: call {{.*}} @llvm.trap
wire -fbounds-checking to the new LLVM bounds checking pass llvm-svn: 157262
2012-05-23 01:19:45 +08:00
a[2] = 1;
update calls to objectsize intrinsic to match LLVM r156473 add a test for -fbounds-checking code generation llvm-svn: 156474
2012-05-09 23:53:34 +08:00
}
Fix -fsanitize=array-bound to treat T[0] union members as flexible array members regardless of whether they're the last member of the union.
2020-03-19 06:46:31 +08:00
union U { int a[0]; int b[1]; int c[2]; };
// CHECK-LABEL: define {{.*}} @f4
int f4(union U *u, int i) {
// a and b are treated as flexible array members.
// CHECK-NOT: @llvm.trap
return u->a[i] + u->b[i];
// CHECK: }
}
// CHECK-LABEL: define {{.*}} @f5
int f5(union U *u, int i) {
// c is not a flexible array member.
// NONLOCAL: call {{.*}} @llvm.trap
return u->c[i];
// CHECK: }
}