Fix loading of lto_section on strict alignment targets (PR lto/91078).

2019-07-04  Martin Liska  <mliska@suse.cz>

	PR lto/91078
	* lto-common.c (lto_file_finalize): Use memcpy to set
	file_data->lto_section_header.

From-SVN: r273077

diff --git a/gcc/lto/ChangeLog b/gcc/lto/ChangeLog
index 23ad84ecc75af4863ac9f2edfdbe5f24f6085681..871598cae510fe3c986235ea4b9fea49c497b2ce 100644 (file)
--- a/gcc/lto/ChangeLog
+++ b/gcc/lto/ChangeLog
@@ -1,3 +1,9 @@
+2019-07-04  Martin Liska  <mliska@suse.cz>
+
+       PR lto/91078
+       * lto-common.c (lto_file_finalize): Use memcpy to set
+       file_data->lto_section_header.
+
 2019-07-03  Martin Liska  <mliska@suse.cz>
 
        * lto-common.c: Read LTO section and verify header.

diff --git a/gcc/lto/lto-common.c b/gcc/lto/lto-common.c
index bc8c2b403877784a6b2747aacf8b0286185663cf..3c6d7b25ddbc3d4ed7fe47b633cb010cc1ab235f 100644 (file)
--- a/gcc/lto/lto-common.c
+++ b/gcc/lto/lto-common.c
@@ -2199,7 +2199,7 @@ lto_file_finalize (struct lto_file_decl_data *file_data, lto_file *file)
       return;
     }
 
-  file_data->lto_section_header = *(const lto_section *)data;
+  memcpy (&file_data->lto_section_header, data, sizeof (lto_section));
   lto_check_version (file_data->lto_section_header.major_version,
                     file_data->lto_section_header.minor_version,
                     file_data->file_name);