mirror of
https://github.com/llvm/llvm-project.git
synced 2025-04-27 08:26:08 +00:00
4fbf84c173
Summary:
This attribute tells clang to skip this function from stack protector
when -stack-protector option is passed.
GCC option for this is:
__attribute__((__optimize__("no-stack-protector"))) and the
equivalent clang syntax would be: __attribute__((no_stack_protector))
This is used in Linux kernel to selectively disable stack protector
in certain functions.
Reviewers: aaron.ballman, rsmith, rnk, probinson
Reviewed By: aaron.ballman
Subscribers: probinson, srhines, cfe-commits
Differential Revision: https://reviews.llvm.org/D46300
llvm-svn: 331925
56 lines
2.6 KiB
C
56 lines
2.6 KiB
C
// RUN: %clang_cc1 -emit-llvm -o - %s -stack-protector 0 | FileCheck -check-prefix=DEF -check-prefix=NOSSP %s
|
|
// RUN: %clang_cc1 -emit-llvm -o - %s -stack-protector 1 | FileCheck -check-prefix=DEF -check-prefix=SSP %s
|
|
// RUN: %clang_cc1 -emit-llvm -o - %s -stack-protector 2 | FileCheck -check-prefix=DEF -check-prefix=SSPSTRONG %s
|
|
// RUN: %clang_cc1 -emit-llvm -o - %s -stack-protector 3 | FileCheck -check-prefix=DEF -check-prefix=SSPREQ %s
|
|
|
|
// RUN: %clang_cc1 -emit-llvm -o - %s -fsanitize=safe-stack | FileCheck -check-prefix=DEF -check-prefix=SAFESTACK-NOSSP %s
|
|
// RUN: %clang_cc1 -emit-llvm -o - %s -fsanitize=safe-stack -stack-protector 0 | FileCheck -check-prefix=DEF -check-prefix=SAFESTACK-NOSSP %s
|
|
// RUN: %clang_cc1 -emit-llvm -o - %s -fsanitize=safe-stack -stack-protector 1 | FileCheck -check-prefix=DEF -check-prefix=SAFESTACK-SSP %s
|
|
// RUN: %clang_cc1 -emit-llvm -o - %s -fsanitize=safe-stack -stack-protector 2 | FileCheck -check-prefix=DEF -check-prefix=SAFESTACK-SSPSTRONG %s
|
|
// RUN: %clang_cc1 -emit-llvm -o - %s -fsanitize=safe-stack -stack-protector 3 | FileCheck -check-prefix=DEF -check-prefix=SAFESTACK-SSPREQ %s
|
|
|
|
typedef __SIZE_TYPE__ size_t;
|
|
|
|
int printf(const char * _Format, ...);
|
|
size_t strlen(const char *s);
|
|
char *strcpy(char *s1, const char *s2);
|
|
|
|
// DEF: define {{.*}}void @test1(i8* %msg) #[[A:.*]] {
|
|
void test1(const char *msg) {
|
|
char a[strlen(msg) + 1];
|
|
strcpy(a, msg);
|
|
printf("%s\n", a);
|
|
}
|
|
|
|
// DEF: define {{.*}}void @test2(i8* %msg) #[[B:.*]] {
|
|
__attribute__((no_stack_protector))
|
|
void test2(const char *msg) {
|
|
char a[strlen(msg) + 1];
|
|
strcpy(a, msg);
|
|
printf("%s\n", a);
|
|
}
|
|
|
|
// NOSSP-NOT: attributes #[[A]] = {{.*}} ssp
|
|
// SSP: attributes #[[A]] = {{.*}} ssp{{ }}
|
|
// SSPSTRONG: attributes #[[A]] = {{.*}} sspstrong
|
|
// SSPREQ: attributes #[[A]] = {{.*}} sspreq
|
|
|
|
// SAFESTACK-NOSSP: attributes #[[A]] = {{.*}} safestack
|
|
// SAFESTACK-NOSSP-NOT: ssp
|
|
|
|
// SAFESTACK-SSP: attributes #[[A]] = {{.*}} safestack ssp{{ }}
|
|
// SAFESTACK-SSPSTRONG: attributes #[[A]] = {{.*}} safestack sspstrong
|
|
// SAFESTACK-SSPREQ: attributes #[[A]] = {{.*}} safestack sspreq
|
|
|
|
// NOSSP-NOT: attributes #[[B]] = {{.*}} ssp
|
|
// SSP-NOT: attributes #[[B]] = {{.*}} ssp{{ }}
|
|
// SSPSTRONG-NOT: attributes #[[B]] = {{.*}} sspstrong
|
|
// SSPREQ-NOT: attributes #[[B]] = {{.*}} sspreq
|
|
|
|
// SAFESTACK-SSP: attributes #[[B]] = {{.*}} safestack
|
|
// SAFESTACK-SSP-NOT: attributes #[[B]] = {{.*}} safestack ssp{{ }}
|
|
// SAFESTACK-SSPSTRONG: attributes #[[B]] = {{.*}} safestack
|
|
// SAFESTACK-SSPSTRONG-NOT: attributes #[[B]] = {{.*}} safestack sspstrong
|
|
// SAFESTACK-SSPREQ: attributes #[[B]] = {{.*}} safestack
|
|
// SAFESTACK-SSPREQ-NOT: attributes #[[B]] = {{.*}} safestack sspreq
|