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[asan] make sure __asan_report_* functions are not inlined (so that they are not optimized away and are kept in the resulting library). Patch by glider@google.com 

llvm-svn: 147302
This commit is contained in:
Kostya Serebryany 2011-12-28 00:59:39 +00:00
parent 5469986da0
commit 46c70d33d7
1 changed files with 8 additions and 9 deletions
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17
compiler-rt/lib/asan/asan_rtl.cc
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@ -331,12 +331,12 @@ static void ASAN_OnSIGILL(int, siginfo_t *siginfo, void *context) {
}
// exported functions
#define ASAN_REPORT_ERROR(type, is_write, size) \
extern "C" void __asan_report_ ## type ## size(uintptr_t addr) \
__attribute__((visibility("default"))); \
extern "C" void __asan_report_ ## type ## size(uintptr_t addr) { \
GET_BP_PC_SP; \
__asan_report_error(pc, bp, sp, addr, is_write, size); \
#define ASAN_REPORT_ERROR(type, is_write, size) \
extern "C" void __asan_report_ ## type ## size(uintptr_t addr) \
__attribute__((visibility("default"))) __attribute__((noinline)); \
extern "C" void __asan_report_ ## type ## size(uintptr_t addr) { \
GET_BP_PC_SP; \
__asan_report_error(pc, bp, sp, addr, is_write, size); \
}
ASAN_REPORT_ERROR(load, false, 1)
@ -355,8 +355,7 @@ ASAN_REPORT_ERROR(store, true, 16)
// dynamic libraries access the symbol even if it is not used by the executable
// itself. This should help if the build system is removing dead code at link
// time.
extern "C"
void __asan_force_interface_symbols() {
static void force_interface_symbols() {
volatile int fake_condition = 0; // prevent dead condition elimination.
if (fake_condition) {
__asan_report_load1(NULL);
@ -775,7 +774,7 @@ void __asan_init() {
asanThreadRegistry().Init();
asanThreadRegistry().GetMain()->ThreadStart();
__asan_force_interface_symbols(); // no-op.
force_interface_symbols(); // no-op.
if (FLAG_v) {
Report("AddressSanitizer Init done\n");