maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/clang/test/CodeGen/bounds-checking.c

30 lines
686 B
C
Raw Normal View History

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
Introduce -fsanitize-trap= flag. This flag controls whether a given sanitizer traps upon detecting an error. It currently only supports UBSan. The existing flag -fsanitize-undefined-trap-on-error has been made an alias of -fsanitize-trap=undefined. This change also cleans up some awkward behavior around the combination of -fsanitize-trap=undefined and -fsanitize=undefined. Previously we would reject command lines containing the combination of these two flags, as -fsanitize=vptr is not compatible with trapping. This required the creation of -fsanitize=undefined-trap, which excluded -fsanitize=vptr (and -fsanitize=function, but this seems like an oversight). Now, -fsanitize=undefined is an alias for -fsanitize=undefined-trap, and if -fsanitize-trap=undefined is specified, we treat -fsanitize=vptr as an "unsupported" flag, which means that we error out if the flag is specified explicitly, but implicitly disable it if the flag was implied by -fsanitize=undefined. Differential Revision: http://reviews.llvm.org/D10464 llvm-svn: 240105
2015-06-19 07:59:22 +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
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
}