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File gcc9-warning.patch of Package xtrabackup
From b47d098fd6705eb15302dbe136f142a617d30998 Mon Sep 17 00:00:00 2001 From: marxin <mliska@suse.cz> Date: Mon, 25 Feb 2019 15:19:04 +0100 Subject: [PATCH] Fix new GCC 9 warning: [ 874s] In function 'void* memcpy(void*, const void*, size_t)', [ 874s] inlined from 'virtual String* Item_func_format::val_str_ascii(String*)' at /home/abuild/rpmbuild/BUILD/percona-xtrabackup-2.4.12/sql/item_strfunc.cc:3214:13: [ 874s] /usr/include/bits/string_fortified.h:34:33: warning: 'void* __builtin_memcpy(void*, const void*, unsigned int)' writing 1 or more bytes into a region of size 0 overflows the destination [-Wstringop-overflow=] [ 874s] 34 | return __builtin___memcpy_chk (__dest, __src, __len, __bos0 (__dest)); It's analyzed here: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89350 --- sql/item_strfunc.cc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: percona-xtrabackup-2.4.26/sql/item_strfunc.cc =================================================================== --- percona-xtrabackup-2.4.26.orig/sql/item_strfunc.cc +++ percona-xtrabackup-2.4.26/sql/item_strfunc.cc @@ -2995,7 +2995,7 @@ String *Item_func_format::val_str_ascii( char *start_dst = dst; /* Put the fractional part */ - if (dec) + if (dec > 0) { dst-= (dec + 1); *dst= lc->decimal_point;
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