[Python-checkins] bpo-29505: Fix interpreter in fuzzing targets to be relocatable (GH-13907)

[Miss Islington (bot)]

https://github.com/python/cpython/commit/6692d35317a45905a043dccae3940ea5d5d84352
commit: 6692d35317a45905a043dccae3940ea5d5d84352
branch: 3.7
author: Miss Islington (bot) <31488909+miss-islington at users.noreply.github.com>
committer: GitHub <noreply at github.com>
date: 2019-06-08T08:03:46-07:00
summary:

bpo-29505: Fix interpreter in fuzzing targets to be relocatable (GH-13907)

(cherry picked from commit a15a7bcaea54e1845ab2abe27e6f583294cd715b)

Co-authored-by: Ammar Askar <ammar at ammaraskar.com>

files:
M Modules/_xxtestfuzz/fuzzer.c

diff --git a/Modules/_xxtestfuzz/fuzzer.c b/Modules/_xxtestfuzz/fuzzer.c
index b50eb6512710..54f816ebc93d 100644
--- a/Modules/_xxtestfuzz/fuzzer.c
+++ b/Modules/_xxtestfuzz/fuzzer.c
@@ -88,6 +88,14 @@ static int _run_fuzz(const uint8_t *data, size_t size, int(*fuzzer)(const char*
 /* CPython generates a lot of leak warnings for whatever reason. */
 int __lsan_is_turned_off(void) { return 1; }
 
+wchar_t wide_program_name[NAME_MAX];
+
+int LLVMFuzzerInitialize(int *argc, char ***argv) {
+    wchar_t* wide_program_name = Py_DecodeLocale(*argv[0], NULL);
+    Py_SetProgramName(wide_program_name);
+    return 0;
+}
+
 /* Fuzz test interface.
    This returns the bitwise or of all fuzz test's return values.