[ASan] Get rid of __asan_symbolize function

llvm-svn: 197670

compiler-rt/include/sanitizer/asan_interface.h

@@ -82,14 +82,6 @@ extern "C" {
   // the program crashes before ASan report is printed.
   void __asan_on_error();
 
-  // User may provide its own implementation for symbolization function.
-  // It should print the description of instruction at address "pc" to
-  // "out_buffer". Description should be at most "out_size" bytes long.
-  // User-specified function should return true if symbolization was
-  // successful.
-  bool __asan_symbolize(const void *pc, char *out_buffer,
-                                       int out_size);
-
   // Returns the estimated number of bytes that will be reserved by allocator
   // for request of "size" bytes. If ASan allocator can't allocate that much
   // memory, returns the maximal possible allocation size, otherwise returns

compiler-rt/lib/asan/asan_interface_internal.h

@@ -99,10 +99,6 @@ extern "C" {
   SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
   /* OPTIONAL */ void __asan_on_error();
 
-  SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
-  /* OPTIONAL */ bool __asan_symbolize(const void *pc, char *out_buffer,
-                                       int out_size);
-
   SANITIZER_INTERFACE_ATTRIBUTE
   uptr __asan_get_estimated_allocated_size(uptr size);
 

compiler-rt/lib/asan/asan_stack.cc

@@ -18,14 +18,8 @@
 
 namespace __asan {
 
-static bool MaybeCallAsanSymbolize(const void *pc, char *out_buffer,
-                                   int out_size) {
-  return (&__asan_symbolize) ? __asan_symbolize(pc, out_buffer, out_size)
-                             : false;
-}
-
 void PrintStack(const uptr *trace, uptr size) {
-  StackTrace::PrintStack(trace, size, MaybeCallAsanSymbolize);
+  StackTrace::PrintStack(trace, size);
 }
 
 void PrintStack(StackTrace *stack) {
@@ -36,16 +30,6 @@ void PrintStack(StackTrace *stack) {
 
 // ------------------ Interface -------------- {{{1
 
-// Provide default implementation of __asan_symbolize that does nothing
-// and may be overriden by user if he wants to use his own symbolization.
-// ASan on Windows has its own implementation of this.
-#if !SANITIZER_SUPPORTS_WEAK_HOOKS
-SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE NOINLINE
-bool __asan_symbolize(const void *pc, char *out_buffer, int out_size) {
-  return false;
-}
-#endif
-
 extern "C" {
 SANITIZER_INTERFACE_ATTRIBUTE
 void __sanitizer_print_stack_trace() {

compiler-rt/lib/asan/lit_tests/TestCases/Darwin/interface_symbols_darwin.c

@@ -12,7 +12,6 @@
 // RUN:   | grep "__asan_" | sed "s/___asan_/__asan_/" \
 // RUN:   | grep -v "__asan_malloc_hook" \
 // RUN:   | grep -v "__asan_free_hook" \
-// RUN:   | grep -v "__asan_symbolize" \
 // RUN:   | grep -v "__asan_default_options" \
 // RUN:   | grep -v "__asan_on_error" > %t.symbols
 

compiler-rt/lib/asan/lit_tests/TestCases/Linux/interface_symbols_linux.c

@@ -5,7 +5,6 @@
 // RUN:    | grep "__asan_" | sed "s/___asan_/__asan_/" \
 // RUN:    | grep -v "__asan_malloc_hook" \
 // RUN:    | grep -v "__asan_free_hook" \
-// RUN:    | grep -v "__asan_symbolize" \
 // RUN:    | grep -v "__asan_default_options" \
 // RUN:    | grep -v "__asan_stack_" \
 // RUN:    | grep -v "__asan_on_error" > %t.symbols

compiler-rt/lib/asan/lit_tests/TestCases/symbolize_callback.cc

@@ -1,17 +0,0 @@
-// RUN: %clangxx_asan -O2 %s -o %t && not %t 2>&1 | FileCheck %s
-
-#include <stdio.h>
-#include <stdlib.h>
-
-extern "C"
-bool __asan_symbolize(const void *pc, char *out_buffer, int out_size) {
-  snprintf(out_buffer, out_size, "MySymbolizer");
-  return true;
-}
-
-int main() {
-  char *x = (char*)malloc(10 * sizeof(char));
-  free(x);
-  return x[5];
-  // CHECK: MySymbolizer
-}