[compiler-rt] remove hexdump interception.

[devnexen]

a freebsd dev member reported a symbol conflict and intercepting this had little value anyway.

[llvmbot]

@llvm/pr-subscribers-compiler-rt-sanitizer

Author: David CARLIER (devnexen)

Changes

a freebsd dev member reported a symbol conflict and intercepting this had little value anyway.

---

Full diff: https://github.com/llvm/llvm-project/pull/79378.diff

3 Files Affected:

• (modified) compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc (-15)
• (modified) compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h (-1)
• (removed) compiler-rt/test/sanitizer_common/TestCases/FreeBSD/hexdump.cc (-23)

diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc b/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
index 1b56bebac64e685..3ecdb55cdbf72f5 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
@@ -10218,20 +10218,6 @@ INTERCEPTOR(int, __xuname, int size, void *utsname) {
 #define INIT___XUNAME
 #endif
 
-#if SANITIZER_INTERCEPT_HEXDUMP
-INTERCEPTOR(void, hexdump, const void *ptr, int length, const char *header, int flags) {
-  void *ctx;
-  COMMON_INTERCEPTOR_ENTER(ctx, hexdump, ptr, length, header, flags);
-  COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, length);
-  COMMON_INTERCEPTOR_READ_RANGE(ctx, header, internal_strlen(header) + 1);
-  REAL(hexdump)(ptr, length, header, flags);
-}
-
-#define INIT_HEXDUMP COMMON_INTERCEPT_FUNCTION(hexdump);
-#else
-#define INIT_HEXDUMP
-#endif
-
 #if SANITIZER_INTERCEPT_ARGP_PARSE
 INTERCEPTOR(int, argp_parse, const struct argp *argp, int argc, char **argv,
             unsigned flags, int *arg_index, void *input) {
@@ -10581,7 +10567,6 @@ static void InitializeCommonInterceptors() {
   INIT_PROCCTL
   INIT_UNAME;
   INIT___XUNAME;
-  INIT_HEXDUMP;
   INIT_ARGP_PARSE;
   INIT_CPUSET_GETAFFINITY;
 
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h b/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
index 0ce4e9351bc1da2..de55c736d0e1447 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
@@ -596,7 +596,6 @@
 #define SANITIZER_INTERCEPT___XUNAME SI_FREEBSD
 #define SANITIZER_INTERCEPT_FLOPEN SI_FREEBSD
 #define SANITIZER_INTERCEPT_PROCCTL SI_FREEBSD
-#define SANITIZER_INTERCEPT_HEXDUMP SI_FREEBSD
 #define SANITIZER_INTERCEPT_ARGP_PARSE SI_GLIBC
 #define SANITIZER_INTERCEPT_CPUSET_GETAFFINITY SI_FREEBSD
 
diff --git a/compiler-rt/test/sanitizer_common/TestCases/FreeBSD/hexdump.cc b/compiler-rt/test/sanitizer_common/TestCases/FreeBSD/hexdump.cc
deleted file mode 100644
index e07650d64102a4e..000000000000000
--- a/compiler-rt/test/sanitizer_common/TestCases/FreeBSD/hexdump.cc
+++ /dev/null
@@ -1,23 +0,0 @@
-// RUN: %clangxx -O0 -g %s -o %t -lutil && %run %t 2>&1 | FileCheck %s
-
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <libutil.h>
-
-int main(void) {
-  printf("hexdump");
-  char *line;
-  size_t lineno = 0, len;
-  const char *delim = "\\\\#";
-  FILE *fp = fopen("/etc/fstab", "r");
-  assert(fp);
-  line = fparseln(fp, &len, &lineno, delim, 0);
-  hexdump(line, len, nullptr, 0);
-  free(line);
-  fclose(fp);
-  assert(lineno != 0);
-  assert(len > 0);
-
-  return 0;
-}

[markjdb]

Thanks. Just noting that this is a revert of b4c840e