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MDEV-21907: Fix some -Wconversion outside InnoDB

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Some .c and .cc files are compiled as part of Mariabackup.
Enabling -Wconversion for InnoDB would also enable it for
Mariabackup. The .h files are being included during
InnoDB or Mariabackup compilation.

Notably, GCC 5 (but not GCC 4 or 6 or later versions)
would report -Wconversion for x|=y when the type is
unsigned char. So, we will either write x=(uchar)(x|y)
or disable the -Wconversion warning for GCC 5.

bitmap_set_bit(), bitmap_flip_bit(), bitmap_clear_bit(), bitmap_is_set():
Always implement as inline functions.
This commit is contained in:
Marko Mäkelä
2020-03-12 19:44:52 +02:00
parent c7920fa8ff
commit d82ac8d374
13 changed files with 137 additions and 156 deletions
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11
include/my_compare.h
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@@ -1,5 +1,5 @@
/* Copyright (c) 2011, Oracle and/or its affiliates.
Copyright (c) Monty Program Ab; 1991-2011
Copyright (c) 1991, 2020, MariaDB Corporation.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -95,15 +95,16 @@ static inline uchar get_rec_bits(const uchar *ptr, uchar ofs, uint len)
{
uint16 val= ptr[0];
if (ofs + len > 8)
val|= (uint16)(ptr[1]) << 8;
return (val >> ofs) & ((1 << len) - 1);
val|= (uint16)((uint16)(ptr[1]) << 8);
return (uchar) ((val >> ofs) & ((1 << len) - 1));
}
static inline void set_rec_bits(uint16 bits, uchar *ptr, uchar ofs, uint len)
{
ptr[0]= (ptr[0] & ~(((1 << len) - 1) << ofs)) | (bits << ofs);
ptr[0]= (uchar) ((ptr[0] & ~(((1 << len) - 1) << ofs)) | (bits << ofs));
if (ofs + len > 8)
ptr[1]= (ptr[1] & ~((1 << (len - 8 + ofs)) - 1)) | (bits >> (8 - ofs));
ptr[1]= (uchar) ((ptr[1] & ~((1 << (len - 8 + ofs)) - 1)) |
bits >> (8 - ofs));
}
#define clr_rec_bits(bit_ptr, bit_ofs, bit_len) \