From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Sat, 14 Sep 2019 18:31:40 +0000 (-0400)
Subject: runas: fix: possible unaligned access in packed structure
X-Git-Tag: v2.11.0-rc4~41
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=ab4b3982b6caebe26cc204efd432f9e1bab23a83;p=lttng-tools.git

runas: fix: possible unaligned access in packed structure

Fix the warning that an unaligned pointers can be passed as parameter
emitted in _extract_elf_symbol_offset.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---

diff --git a/src/common/runas.c b/src/common/runas.c
index cddddb9ec..7fbb01011 100644
--- a/src/common/runas.c
+++ b/src/common/runas.c
@@ -512,15 +512,17 @@ int _extract_elf_symbol_offset(struct run_as_data *data,
 		struct run_as_ret *ret_value)
 {
 	int ret = 0;
+	uint64_t offset;
 
 	ret_value->_error = false;
 	ret = lttng_elf_get_symbol_offset(data->u.extract_elf_symbol_offset.fd,
 			 data->u.extract_elf_symbol_offset.function,
-			 &ret_value->u.extract_elf_symbol_offset.offset);
+			 &offset);
 	if (ret) {
 		DBG("Failed to extract ELF function offset");
 		ret_value->_error = true;
 	}
+	ret_value->u.extract_elf_symbol_offset.offset = offset;
 
 	return ret;
 }