[clang][ubsan] Implicit Conversion Sanitizer - integer sign change - clang part
This is the second half of Implicit Integer Conversion Sanitizer.
It completes the first half, and finally makes the sanitizer
fully functional! Only the bitfield handling is missing.
Summary:
C and C++ are interesting languages. They are statically typed, but weakly.
The implicit conversions are allowed. This is nice, allows to write code
while balancing between getting drowned in everything being convertible,
and nothing being convertible. As usual, this comes with a price:
```
void consume(unsigned int val);
void test(int val) {
consume(val);
// The 'val' is `signed int`, but `consume()` takes `unsigned int`.
// If val is negative, then consume() will be operating on a large
// unsigned value, and you may or may not have a bug.
// But yes, sometimes this is intentional.
// Making the conversion explicit silences the sanitizer.
consume((unsigned int)val);
}
```
Yes, there is a `-Wsign-conversion`` diagnostic group, but first, it is kinda
noisy, since it warns on everything (unlike sanitizers, warning on an
actual issues), and second, likely there are cases where it does **not** warn.
The actual detection is pretty easy. We just need to check each of the values
whether it is negative, and equality-compare the results of those comparisons.
The unsigned value is obviously non-negative. Zero is non-negative too.
https://godbolt.org/g/w93oj2
We do not have to emit the check *always*, there are obvious situations
where we can avoid emitting it, since it would **always** get optimized-out.
But i do think the tautological IR (`icmp ult %x, 0`, which is always false)
should be emitted, and the middle-end should cleanup it.
This sanitizer is in the `-fsanitize=implicit-conversion` group,
and is a logical continuation of D48958 `-fsanitize=implicit-integer-truncation`.
As for the ordering, i'we opted to emit the check **after**
`-fsanitize=implicit-integer-truncation`. At least on these simple 16 test cases,
this results in 1 of the 12 emitted checks being optimized away,
as compared to 0 checks being optimized away if the order is reversed.
This is a clang part.
The compiler-rt part is D50251.
Finishes fixing [[ https://bugs.llvm.org/show_bug.cgi?id=21530 | PR21530 ]], [[ https://bugs.llvm.org/show_bug.cgi?id=37552 | PR37552 ]], [[ https://bugs.llvm.org/show_bug.cgi?id=35409 | PR35409 ]].
Finishes partially fixing [[ https://bugs.llvm.org/show_bug.cgi?id=9821 | PR9821 ]].
Finishes fixing https://github.com/google/sanitizers/issues/940.
Only the bitfield handling is missing.
Reviewers: vsk, rsmith, rjmccall, #sanitizers, erichkeane
Reviewed By: rsmith
Subscribers: chandlerc, filcab, cfe-commits, regehr
Tags: #sanitizers, #clang
Differential Revision: https://reviews.llvm.org/D50250
llvm-svn: 345660
2018-10-31 05:58:56 +08:00
|
|
|
// RUN: %clang_cc1 -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefix=CHECK
|
2020-11-12 00:19:53 +08:00
|
|
|
// RUN: %clang_cc1 -fsanitize=implicit-integer-sign-change -fno-sanitize-recover=implicit-integer-sign-change -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefixes=CHECK,CHECK-SANITIZE
|
|
|
|
|
// RUN: %clang_cc1 -fsanitize=implicit-integer-sign-change -fsanitize-recover=implicit-integer-sign-change -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefixes=CHECK,CHECK-SANITIZE
|
|
|
|
|
// RUN: %clang_cc1 -fsanitize=implicit-integer-sign-change -fsanitize-trap=implicit-integer-sign-change -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefixes=CHECK,CHECK-SANITIZE
|
[clang][ubsan] Implicit Conversion Sanitizer - integer sign change - clang part
This is the second half of Implicit Integer Conversion Sanitizer.
It completes the first half, and finally makes the sanitizer
fully functional! Only the bitfield handling is missing.
Summary:
C and C++ are interesting languages. They are statically typed, but weakly.
The implicit conversions are allowed. This is nice, allows to write code
while balancing between getting drowned in everything being convertible,
and nothing being convertible. As usual, this comes with a price:
```
void consume(unsigned int val);
void test(int val) {
consume(val);
// The 'val' is `signed int`, but `consume()` takes `unsigned int`.
// If val is negative, then consume() will be operating on a large
// unsigned value, and you may or may not have a bug.
// But yes, sometimes this is intentional.
// Making the conversion explicit silences the sanitizer.
consume((unsigned int)val);
}
```
Yes, there is a `-Wsign-conversion`` diagnostic group, but first, it is kinda
noisy, since it warns on everything (unlike sanitizers, warning on an
actual issues), and second, likely there are cases where it does **not** warn.
The actual detection is pretty easy. We just need to check each of the values
whether it is negative, and equality-compare the results of those comparisons.
The unsigned value is obviously non-negative. Zero is non-negative too.
https://godbolt.org/g/w93oj2
We do not have to emit the check *always*, there are obvious situations
where we can avoid emitting it, since it would **always** get optimized-out.
But i do think the tautological IR (`icmp ult %x, 0`, which is always false)
should be emitted, and the middle-end should cleanup it.
This sanitizer is in the `-fsanitize=implicit-conversion` group,
and is a logical continuation of D48958 `-fsanitize=implicit-integer-truncation`.
As for the ordering, i'we opted to emit the check **after**
`-fsanitize=implicit-integer-truncation`. At least on these simple 16 test cases,
this results in 1 of the 12 emitted checks being optimized away,
as compared to 0 checks being optimized away if the order is reversed.
This is a clang part.
The compiler-rt part is D50251.
Finishes fixing [[ https://bugs.llvm.org/show_bug.cgi?id=21530 | PR21530 ]], [[ https://bugs.llvm.org/show_bug.cgi?id=37552 | PR37552 ]], [[ https://bugs.llvm.org/show_bug.cgi?id=35409 | PR35409 ]].
Finishes partially fixing [[ https://bugs.llvm.org/show_bug.cgi?id=9821 | PR9821 ]].
Finishes fixing https://github.com/google/sanitizers/issues/940.
Only the bitfield handling is missing.
Reviewers: vsk, rsmith, rjmccall, #sanitizers, erichkeane
Reviewed By: rsmith
Subscribers: chandlerc, filcab, cfe-commits, regehr
Tags: #sanitizers, #clang
Differential Revision: https://reviews.llvm.org/D50250
llvm-svn: 345660
2018-10-31 05:58:56 +08:00
|
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extern "C" { // Disable name mangling.
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// ========================================================================== //
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// The expected true-negatives.
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// ========================================================================== //
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// Sanitization is explicitly disabled.
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// ========================================================================== //
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2021-11-17 20:40:55 +08:00
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// CHECK-LABEL: @ignorelist_0
|
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|
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|
__attribute__((no_sanitize("undefined"))) unsigned int ignorelist_0(signed int src) {
|
[clang][ubsan] Implicit Conversion Sanitizer - integer sign change - clang part
This is the second half of Implicit Integer Conversion Sanitizer.
It completes the first half, and finally makes the sanitizer
fully functional! Only the bitfield handling is missing.
Summary:
C and C++ are interesting languages. They are statically typed, but weakly.
The implicit conversions are allowed. This is nice, allows to write code
while balancing between getting drowned in everything being convertible,
and nothing being convertible. As usual, this comes with a price:
```
void consume(unsigned int val);
void test(int val) {
consume(val);
// The 'val' is `signed int`, but `consume()` takes `unsigned int`.
// If val is negative, then consume() will be operating on a large
// unsigned value, and you may or may not have a bug.
// But yes, sometimes this is intentional.
// Making the conversion explicit silences the sanitizer.
consume((unsigned int)val);
}
```
Yes, there is a `-Wsign-conversion`` diagnostic group, but first, it is kinda
noisy, since it warns on everything (unlike sanitizers, warning on an
actual issues), and second, likely there are cases where it does **not** warn.
The actual detection is pretty easy. We just need to check each of the values
whether it is negative, and equality-compare the results of those comparisons.
The unsigned value is obviously non-negative. Zero is non-negative too.
https://godbolt.org/g/w93oj2
We do not have to emit the check *always*, there are obvious situations
where we can avoid emitting it, since it would **always** get optimized-out.
But i do think the tautological IR (`icmp ult %x, 0`, which is always false)
should be emitted, and the middle-end should cleanup it.
This sanitizer is in the `-fsanitize=implicit-conversion` group,
and is a logical continuation of D48958 `-fsanitize=implicit-integer-truncation`.
As for the ordering, i'we opted to emit the check **after**
`-fsanitize=implicit-integer-truncation`. At least on these simple 16 test cases,
this results in 1 of the 12 emitted checks being optimized away,
as compared to 0 checks being optimized away if the order is reversed.
This is a clang part.
The compiler-rt part is D50251.
Finishes fixing [[ https://bugs.llvm.org/show_bug.cgi?id=21530 | PR21530 ]], [[ https://bugs.llvm.org/show_bug.cgi?id=37552 | PR37552 ]], [[ https://bugs.llvm.org/show_bug.cgi?id=35409 | PR35409 ]].
Finishes partially fixing [[ https://bugs.llvm.org/show_bug.cgi?id=9821 | PR9821 ]].
Finishes fixing https://github.com/google/sanitizers/issues/940.
Only the bitfield handling is missing.
Reviewers: vsk, rsmith, rjmccall, #sanitizers, erichkeane
Reviewed By: rsmith
Subscribers: chandlerc, filcab, cfe-commits, regehr
Tags: #sanitizers, #clang
Differential Revision: https://reviews.llvm.org/D50250
llvm-svn: 345660
2018-10-31 05:58:56 +08:00
|
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// We are not in "undefined" group, so that doesn't work.
|
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// CHECK-SANITIZE: call
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// CHECK: }
|
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return src;
|
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|
}
|
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2021-11-17 20:40:55 +08:00
|
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|
// CHECK-LABEL: @ignorelist_1
|
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|
|
|
__attribute__((no_sanitize("integer"))) unsigned int ignorelist_1(signed int src) {
|
[clang][ubsan] Implicit Conversion Sanitizer - integer sign change - clang part
This is the second half of Implicit Integer Conversion Sanitizer.
It completes the first half, and finally makes the sanitizer
fully functional! Only the bitfield handling is missing.
Summary:
C and C++ are interesting languages. They are statically typed, but weakly.
The implicit conversions are allowed. This is nice, allows to write code
while balancing between getting drowned in everything being convertible,
and nothing being convertible. As usual, this comes with a price:
```
void consume(unsigned int val);
void test(int val) {
consume(val);
// The 'val' is `signed int`, but `consume()` takes `unsigned int`.
// If val is negative, then consume() will be operating on a large
// unsigned value, and you may or may not have a bug.
// But yes, sometimes this is intentional.
// Making the conversion explicit silences the sanitizer.
consume((unsigned int)val);
}
```
Yes, there is a `-Wsign-conversion`` diagnostic group, but first, it is kinda
noisy, since it warns on everything (unlike sanitizers, warning on an
actual issues), and second, likely there are cases where it does **not** warn.
The actual detection is pretty easy. We just need to check each of the values
whether it is negative, and equality-compare the results of those comparisons.
The unsigned value is obviously non-negative. Zero is non-negative too.
https://godbolt.org/g/w93oj2
We do not have to emit the check *always*, there are obvious situations
where we can avoid emitting it, since it would **always** get optimized-out.
But i do think the tautological IR (`icmp ult %x, 0`, which is always false)
should be emitted, and the middle-end should cleanup it.
This sanitizer is in the `-fsanitize=implicit-conversion` group,
and is a logical continuation of D48958 `-fsanitize=implicit-integer-truncation`.
As for the ordering, i'we opted to emit the check **after**
`-fsanitize=implicit-integer-truncation`. At least on these simple 16 test cases,
this results in 1 of the 12 emitted checks being optimized away,
as compared to 0 checks being optimized away if the order is reversed.
This is a clang part.
The compiler-rt part is D50251.
Finishes fixing [[ https://bugs.llvm.org/show_bug.cgi?id=21530 | PR21530 ]], [[ https://bugs.llvm.org/show_bug.cgi?id=37552 | PR37552 ]], [[ https://bugs.llvm.org/show_bug.cgi?id=35409 | PR35409 ]].
Finishes partially fixing [[ https://bugs.llvm.org/show_bug.cgi?id=9821 | PR9821 ]].
Finishes fixing https://github.com/google/sanitizers/issues/940.
Only the bitfield handling is missing.
Reviewers: vsk, rsmith, rjmccall, #sanitizers, erichkeane
Reviewed By: rsmith
Subscribers: chandlerc, filcab, cfe-commits, regehr
Tags: #sanitizers, #clang
Differential Revision: https://reviews.llvm.org/D50250
llvm-svn: 345660
2018-10-31 05:58:56 +08:00
|
|
|
// CHECK-SANITIZE-NOT: call
|
|
|
|
|
// CHECK: }
|
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|
return src;
|
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|
|
|
}
|
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|
2021-11-17 20:40:55 +08:00
|
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|
// CHECK-LABEL: @ignorelist_2
|
|
|
|
|
__attribute__((no_sanitize("implicit-conversion"))) unsigned int ignorelist_2(signed int src) {
|
[clang][ubsan] Implicit Conversion Sanitizer - integer sign change - clang part
This is the second half of Implicit Integer Conversion Sanitizer.
It completes the first half, and finally makes the sanitizer
fully functional! Only the bitfield handling is missing.
Summary:
C and C++ are interesting languages. They are statically typed, but weakly.
The implicit conversions are allowed. This is nice, allows to write code
while balancing between getting drowned in everything being convertible,
and nothing being convertible. As usual, this comes with a price:
```
void consume(unsigned int val);
void test(int val) {
consume(val);
// The 'val' is `signed int`, but `consume()` takes `unsigned int`.
// If val is negative, then consume() will be operating on a large
// unsigned value, and you may or may not have a bug.
// But yes, sometimes this is intentional.
// Making the conversion explicit silences the sanitizer.
consume((unsigned int)val);
}
```
Yes, there is a `-Wsign-conversion`` diagnostic group, but first, it is kinda
noisy, since it warns on everything (unlike sanitizers, warning on an
actual issues), and second, likely there are cases where it does **not** warn.
The actual detection is pretty easy. We just need to check each of the values
whether it is negative, and equality-compare the results of those comparisons.
The unsigned value is obviously non-negative. Zero is non-negative too.
https://godbolt.org/g/w93oj2
We do not have to emit the check *always*, there are obvious situations
where we can avoid emitting it, since it would **always** get optimized-out.
But i do think the tautological IR (`icmp ult %x, 0`, which is always false)
should be emitted, and the middle-end should cleanup it.
This sanitizer is in the `-fsanitize=implicit-conversion` group,
and is a logical continuation of D48958 `-fsanitize=implicit-integer-truncation`.
As for the ordering, i'we opted to emit the check **after**
`-fsanitize=implicit-integer-truncation`. At least on these simple 16 test cases,
this results in 1 of the 12 emitted checks being optimized away,
as compared to 0 checks being optimized away if the order is reversed.
This is a clang part.
The compiler-rt part is D50251.
Finishes fixing [[ https://bugs.llvm.org/show_bug.cgi?id=21530 | PR21530 ]], [[ https://bugs.llvm.org/show_bug.cgi?id=37552 | PR37552 ]], [[ https://bugs.llvm.org/show_bug.cgi?id=35409 | PR35409 ]].
Finishes partially fixing [[ https://bugs.llvm.org/show_bug.cgi?id=9821 | PR9821 ]].
Finishes fixing https://github.com/google/sanitizers/issues/940.
Only the bitfield handling is missing.
Reviewers: vsk, rsmith, rjmccall, #sanitizers, erichkeane
Reviewed By: rsmith
Subscribers: chandlerc, filcab, cfe-commits, regehr
Tags: #sanitizers, #clang
Differential Revision: https://reviews.llvm.org/D50250
llvm-svn: 345660
2018-10-31 05:58:56 +08:00
|
|
|
// CHECK-SANITIZE-NOT: call
|
|
|
|
|
// CHECK: }
|
|
|
|
|
return src;
|
|
|
|
|
}
|
|
|
|
|
|
2021-11-17 20:40:55 +08:00
|
|
|
// CHECK-LABEL: @ignorelist_3
|
|
|
|
|
__attribute__((no_sanitize("implicit-integer-sign-change"))) unsigned int ignorelist_3(signed int src) {
|
[clang][ubsan] Implicit Conversion Sanitizer - integer sign change - clang part
This is the second half of Implicit Integer Conversion Sanitizer.
It completes the first half, and finally makes the sanitizer
fully functional! Only the bitfield handling is missing.
Summary:
C and C++ are interesting languages. They are statically typed, but weakly.
The implicit conversions are allowed. This is nice, allows to write code
while balancing between getting drowned in everything being convertible,
and nothing being convertible. As usual, this comes with a price:
```
void consume(unsigned int val);
void test(int val) {
consume(val);
// The 'val' is `signed int`, but `consume()` takes `unsigned int`.
// If val is negative, then consume() will be operating on a large
// unsigned value, and you may or may not have a bug.
// But yes, sometimes this is intentional.
// Making the conversion explicit silences the sanitizer.
consume((unsigned int)val);
}
```
Yes, there is a `-Wsign-conversion`` diagnostic group, but first, it is kinda
noisy, since it warns on everything (unlike sanitizers, warning on an
actual issues), and second, likely there are cases where it does **not** warn.
The actual detection is pretty easy. We just need to check each of the values
whether it is negative, and equality-compare the results of those comparisons.
The unsigned value is obviously non-negative. Zero is non-negative too.
https://godbolt.org/g/w93oj2
We do not have to emit the check *always*, there are obvious situations
where we can avoid emitting it, since it would **always** get optimized-out.
But i do think the tautological IR (`icmp ult %x, 0`, which is always false)
should be emitted, and the middle-end should cleanup it.
This sanitizer is in the `-fsanitize=implicit-conversion` group,
and is a logical continuation of D48958 `-fsanitize=implicit-integer-truncation`.
As for the ordering, i'we opted to emit the check **after**
`-fsanitize=implicit-integer-truncation`. At least on these simple 16 test cases,
this results in 1 of the 12 emitted checks being optimized away,
as compared to 0 checks being optimized away if the order is reversed.
This is a clang part.
The compiler-rt part is D50251.
Finishes fixing [[ https://bugs.llvm.org/show_bug.cgi?id=21530 | PR21530 ]], [[ https://bugs.llvm.org/show_bug.cgi?id=37552 | PR37552 ]], [[ https://bugs.llvm.org/show_bug.cgi?id=35409 | PR35409 ]].
Finishes partially fixing [[ https://bugs.llvm.org/show_bug.cgi?id=9821 | PR9821 ]].
Finishes fixing https://github.com/google/sanitizers/issues/940.
Only the bitfield handling is missing.
Reviewers: vsk, rsmith, rjmccall, #sanitizers, erichkeane
Reviewed By: rsmith
Subscribers: chandlerc, filcab, cfe-commits, regehr
Tags: #sanitizers, #clang
Differential Revision: https://reviews.llvm.org/D50250
llvm-svn: 345660
2018-10-31 05:58:56 +08:00
|
|
|
// CHECK-SANITIZE-NOT: call
|
|
|
|
|
// CHECK: }
|
|
|
|
|
return src;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Explicit sign-changing conversions.
|
|
|
|
|
// ========================================================================== //
|
|
|
|
|
|
|
|
|
|
// CHECK-LABEL: @explicit_signed_int_to_unsigned_int
|
|
|
|
|
unsigned int explicit_signed_int_to_unsigned_int(signed int src) {
|
|
|
|
|
// CHECK-SANITIZE-NOT: call
|
|
|
|
|
// CHECK: }
|
|
|
|
|
return (unsigned int)src;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// CHECK-LABEL: @explicit_unsigned_int_to_signed_int
|
|
|
|
|
signed int explicit_unsigned_int_to_signed_int(unsigned int src) {
|
|
|
|
|
// CHECK-SANITIZE-NOT: call
|
|
|
|
|
// CHECK: }
|
|
|
|
|
return (signed int)src;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Explicit NOP conversions.
|
|
|
|
|
// ========================================================================== //
|
|
|
|
|
|
|
|
|
|
// CHECK-LABEL: @explicit_unsigned_int_to_unsigned_int
|
|
|
|
|
unsigned int explicit_unsigned_int_to_unsigned_int(unsigned int src) {
|
|
|
|
|
// CHECK-SANITIZE-NOT: call
|
|
|
|
|
// CHECK: }
|
|
|
|
|
return (unsigned int)src;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// CHECK-LABEL: @explicit_signed_int_to_signed_int
|
|
|
|
|
signed int explicit_signed_int_to_signed_int(signed int src) {
|
|
|
|
|
// CHECK-SANITIZE-NOT: call
|
|
|
|
|
// CHECK: }
|
|
|
|
|
return (signed int)src;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Explicit functional sign-changing casts.
|
|
|
|
|
// ========================================================================== //
|
|
|
|
|
|
|
|
|
|
using UnsignedInt = unsigned int;
|
|
|
|
|
using SignedInt = signed int;
|
|
|
|
|
|
|
|
|
|
// CHECK-LABEL: explicit_functional_unsigned_int_to_signed_int
|
|
|
|
|
signed int explicit_functional_unsigned_int_to_signed_int(unsigned int src) {
|
|
|
|
|
// CHECK-SANITIZE-NOT: call
|
|
|
|
|
// CHECK: }
|
|
|
|
|
return SignedInt(src);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// CHECK-LABEL: @explicit_functional_signed_int_to_unsigned_int
|
|
|
|
|
unsigned int explicit_functional_signed_int_to_unsigned_int(signed int src) {
|
|
|
|
|
// CHECK-SANITIZE-NOT: call
|
|
|
|
|
// CHECK: }
|
|
|
|
|
return UnsignedInt(src);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Explicit functional NOP casts.
|
|
|
|
|
// ========================================================================== //
|
|
|
|
|
|
|
|
|
|
// CHECK-LABEL: @explicit_functional_unsigned_int_to_unsigned_int
|
|
|
|
|
unsigned int explicit_functional_unsigned_int_to_unsigned_int(unsigned int src) {
|
|
|
|
|
// CHECK-SANITIZE-NOT: call
|
|
|
|
|
// CHECK: }
|
|
|
|
|
return UnsignedInt(src);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// CHECK-LABEL: @explicit_functional_signed_int_to_signed_int
|
|
|
|
|
signed int explicit_functional_signed_int_to_signed_int(signed int src) {
|
|
|
|
|
// CHECK-SANITIZE-NOT: call
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|
// CHECK: }
|
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|
return SignedInt(src);
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|
}
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|
// Explicit C++-style sign-changing casts.
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|
|
// ========================================================================== //
|
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|
|
|
|
|
|
// CHECK-LABEL: @explicit_cppstyle_unsigned_int_to_signed_int
|
|
|
|
|
signed int explicit_cppstyle_unsigned_int_to_signed_int(unsigned int src) {
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|
|
|
|
// CHECK-SANITIZE-NOT: call
|
|
|
|
|
// CHECK: }
|
|
|
|
|
return static_cast<signed int>(src);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// CHECK-LABEL: @explicit_cppstyle_signed_int_to_unsigned_int
|
|
|
|
|
unsigned int explicit_cppstyle_signed_int_to_unsigned_int(signed int src) {
|
|
|
|
|
// CHECK-SANITIZE-NOT: call
|
|
|
|
|
// CHECK: }
|
|
|
|
|
return static_cast<unsigned int>(src);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Explicit C++-style casts NOP casts.
|
|
|
|
|
// ========================================================================== //
|
|
|
|
|
|
|
|
|
|
// CHECK-LABEL: @explicit_cppstyle_unsigned_int_to_unsigned_int
|
|
|
|
|
unsigned int explicit_cppstyle_unsigned_int_to_unsigned_int(unsigned int src) {
|
|
|
|
|
// CHECK-SANITIZE-NOT: call
|
|
|
|
|
// CHECK: }
|
|
|
|
|
return static_cast<unsigned int>(src);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// CHECK-LABEL: @explicit_cppstyle_signed_int_to_signed_int
|
|
|
|
|
signed int explicit_cppstyle_signed_int_to_signed_int(signed int src) {
|
|
|
|
|
// CHECK-SANITIZE-NOT: call
|
|
|
|
|
// CHECK: }
|
|
|
|
|
return static_cast<signed int>(src);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
} // extern "C"
|