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llvm-project/clang/test/Driver/fsanitize-object-size.c

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[ubsan] Disable the object size check at -O0 This check currently isn't able to diagnose any issues at -O0, not is it likely to [1]. Disabling the check at -O0 leads to substantial compile time and binary size savings. [1] [cfe-dev] Disabling ubsan's object size check at -O0 Differential Revision: https://reviews.llvm.org/D34563 llvm-svn: 306181
2017-06-24 07:15:24 +08:00
// Check that the object size check is disabled at -O0.
//
// RUN: %clang -target x86_64-linux-gnu -fsanitize=object-size %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-NO-OSIZE
// RUN: %clang -target x86_64-linux-gnu -fsanitize=object-size %s -O0 -### 2>&1 | FileCheck %s --check-prefix=CHECK-NO-OSIZE
[Driver] Conform warn_drv_object_size_disabled_O0 to DefaultWarnNoError This diagnostic triggers when -fsanitize=object-size is explicitly specified but will be a no-op (i.e, at -O0). This diagnostic should not fail a -Werror build because it's just an explanatory note to the user. It's not always actionable. For example, a user may not be able to simply disable object-size, because they want it enabled in optimized builds. rdar://42128447 llvm-svn: 336937
2018-07-13 03:53:15 +08:00
// RUN: %clang -target x86_64-linux-gnu -fsanitize=null,object-size %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-NO-OSIZE
// RUN: %clang -target x86_64-linux-gnu -Werror -fsanitize=null,object-size %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-NO-OSIZE
// RUN: %clang -target x86_64-linux-gnu -fsanitize=undefined %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-NO-OSIZE-NO-WARNING
[ubsan] Disable the object size check at -O0 This check currently isn't able to diagnose any issues at -O0, not is it likely to [1]. Disabling the check at -O0 leads to substantial compile time and binary size savings. [1] [cfe-dev] Disabling ubsan's object size check at -O0 Differential Revision: https://reviews.llvm.org/D34563 llvm-svn: 306181
2017-06-24 07:15:24 +08:00
// Check that the object size check is enabled at other optimization levels.
//
// RUN: %clang -target x86_64-linux-gnu -fsanitize=undefined -O1 %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-HAS-OSIZE
// RUN: %clang -target x86_64-linux-gnu -fsanitize=object-size -O2 %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-HAS-OSIZE
// RUN: %clang -target x86_64-linux-gnu -fsanitize=object-size -O3 %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-HAS-OSIZE
// RUN: %clang -target x86_64-linux-gnu -fsanitize=object-size -O4 %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-HAS-OSIZE
// RUN: %clang -target x86_64-linux-gnu -fsanitize=object-size -Ofast %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-HAS-OSIZE
// RUN: %clang -target x86_64-linux-gnu -fsanitize=object-size -Os %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-HAS-OSIZE
// RUN: %clang -target x86_64-linux-gnu -fsanitize=object-size -Oz %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-HAS-OSIZE
// RUN: %clang -target x86_64-linux-gnu -fsanitize=object-size -Og %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-HAS-OSIZE
// Use of trap mode shouldn't affect the object size check.
//
// RUN: %clang -target x86_64-linux-gnu -fsanitize=undefined -fsanitize-trap=undefined -O1 %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-HAS-OSIZE
// RUN: %clang -target x86_64-linux-gnu -fsanitize=undefined-trap -O1 %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-HAS-OSIZE
// RUN: %clang -target x86_64-linux-gnu -fsanitize=undefined-trap -fsanitize-undefined-trap-on-error -O1 %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-HAS-OSIZE
// CHECK-HAS-OSIZE-NOT: warning: the object size sanitizer
// CHECK-HAS-OSIZE: -fsanitize={{[^ ]*}}object-size
// CHECK-NO-OSIZE: warning: the object size sanitizer has no effect at -O0, but is explicitly enabled: -fsanitize={{[^ ]*}}object-size
// CHECK-NO-OSIZE-NOT: -fsanitize={{[^ ]*}}object-size
// CHECK-NO-OSIZE-NO-WARNING-NOT: -fsanitize={{[^ ]*}}object-size