[libfuzzer] chromium-related compilation fixes

[kcc]

LGTM

lib/Fuzzer/FuzzerShmemPosix.cpp

 
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <sys/mman.h>
 #include <semaphore.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <unistd.h>
 
 namespace fuzzer {
 
 std::string SharedMemoryRegion::Path(const char *Name) {
   return DirPlusFile(TmpDir(), Name);
 }
 

lib/Fuzzer/FuzzerTracePC.cpp

 #include "FuzzerValueBitMap.h"
 #include <map>
 #include <set>
 #include <sstream>
 
 // The coverage counters and PCs.
 // These are declared as global variables named "__sancov_*" to simplify
 // experiments with inlined instrumentation.
-alignas(8) uint8_t
-    __sancov_trace_pc_guard_8bit_counters[fuzzer::TracePC::kNumPCs];
+alignas(8) ATTRIBUTE_INTERFACE
+uint8_t __sancov_trace_pc_guard_8bit_counters[fuzzer::TracePC::kNumPCs];
+
+ATTRIBUTE_INTERFACE
 uintptr_t __sancov_trace_pc_pcs[fuzzer::TracePC::kNumPCs];
 
 namespace fuzzer {
 
 TracePC TPC;
 
 uint8_t *TracePC::Counters() const {
   return __sancov_trace_pc_guard_8bit_counters;

lib/Fuzzer/FuzzerTraceState.cpp

 
 // We may need to avoid defining weak hooks to stay compatible with older clang.
 #ifndef LLVM_FUZZER_DEFINES_SANITIZER_WEAK_HOOOKS
 # define LLVM_FUZZER_DEFINES_SANITIZER_WEAK_HOOOKS 1
 #endif
 
 #if LLVM_FUZZER_DEFINES_SANITIZER_WEAK_HOOOKS
 
-ATTRIBUTE_NO_SANITIZE_MEMORY
+ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
 void __sanitizer_weak_hook_memcmp(void *caller_pc, const void *s1,
                                   const void *s2, size_t n, int result) {
   if (result == 0) return;  // No reason to mutate.
   if (n <= 1) return;  // Not interesting.
   fuzzer::TPC.AddValueForMemcmp(caller_pc, s1, s2, n, /*StopAtZero*/false);
 }
 
-ATTRIBUTE_NO_SANITIZE_MEMORY
+ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
 void __sanitizer_weak_hook_strncmp(void *caller_pc, const char *s1,
                                    const char *s2, size_t n, int result) {
   if (result == 0) return;  // No reason to mutate.
   size_t Len1 = fuzzer::InternalStrnlen(s1, n);
   size_t Len2 = fuzzer::InternalStrnlen(s2, n);
   n = std::min(n, Len1);
   n = std::min(n, Len2);
   if (n <= 1) return;  // Not interesting.
   fuzzer::TPC.AddValueForMemcmp(caller_pc, s1, s2, n, /*StopAtZero*/true);
 }
 
 
-ATTRIBUTE_NO_SANITIZE_MEMORY
+ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
 void __sanitizer_weak_hook_strcmp(void *caller_pc, const char *s1,
                                    const char *s2, int result) {
   if (result == 0) return;  // No reason to mutate.
   size_t Len1 = strlen(s1);
   size_t Len2 = strlen(s2);
   size_t N = std::min(Len1, Len2);
   if (N <= 1) return;  // Not interesting.
   fuzzer::TPC.AddValueForMemcmp(caller_pc, s1, s2, N, /*StopAtZero*/true);
 }
 
-ATTRIBUTE_NO_SANITIZE_MEMORY
+ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
 void __sanitizer_weak_hook_strncasecmp(void *called_pc, const char *s1,
                                        const char *s2, size_t n, int result) {
   return __sanitizer_weak_hook_strncmp(called_pc, s1, s2, n, result);
 }
 
-ATTRIBUTE_NO_SANITIZE_MEMORY
+ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
 void __sanitizer_weak_hook_strcasecmp(void *called_pc, const char *s1,
                                       const char *s2, int result) {
   return __sanitizer_weak_hook_strcmp(called_pc, s1, s2, result);
 }
 
-ATTRIBUTE_NO_SANITIZE_MEMORY
+ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
 void __sanitizer_weak_hook_strstr(void *called_pc, const char *s1,
                                   const char *s2, char *result) {
   TS->AddInterestingWord(reinterpret_cast<const uint8_t *>(s2), strlen(s2));
 }
 
-ATTRIBUTE_NO_SANITIZE_MEMORY
+ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
 void __sanitizer_weak_hook_strcasestr(void *called_pc, const char *s1,
                                       const char *s2, char *result) {
   TS->AddInterestingWord(reinterpret_cast<const uint8_t *>(s2), strlen(s2));
 }
 
-ATTRIBUTE_NO_SANITIZE_MEMORY
+ATTRIBUTE_INTERFACE ATTRIBUTE_NO_SANITIZE_MEMORY
 void __sanitizer_weak_hook_memmem(void *called_pc, const void *s1, size_t len1,
                                   const void *s2, size_t len2, void *result) {
   if (fuzzer::DoingMyOwnMemmem) return;
   TS->AddInterestingWord(reinterpret_cast<const uint8_t *>(s2), len2);
 }
 
 #endif  // LLVM_FUZZER_DEFINES_SANITIZER_WEAK_HOOOKS
 }  // extern "C"