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CONC-329: change pvio_*_blocking to return int to accomidate SOCKET_ERROR(-1)

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POWER and other architectures that define char(as my_bool) to be unsigned (as the C
standard leaves this undefined). This resulted in error branches being
unreachabe as indicated by the below compile warnings.

plugins/pvio/pvio_socket.c:763:42: warning: comparison of constant -1 with expression of type 'my_bool' (aka 'char') is always
      false [-Wtautological-constant-out-of-range-compare]
    if (pvio_socket_blocking(pvio, 1, 0) == SOCKET_ERROR)
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^  ~~~~~~~~~~~~
plugins/pvio/pvio_socket.c:875:46: warning: comparison of constant -1 with expression of type 'my_bool' (aka 'char') is always
      false [-Wtautological-constant-out-of-range-compare]
        if (pvio_socket_blocking(pvio, 0, 0) == SOCKET_ERROR)
            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^  ~~~~~~~~~~~~
plugins/pvio/pvio_socket.c:907:42: warning: comparison of constant -1 with expression of type 'my_bool' (aka 'char') is always
      false [-Wtautological-constant-out-of-range-compare]
    if (pvio_socket_blocking(pvio, 1, 0) == SOCKET_ERROR)

ma_hext2int: signed char - prevent compiler errors when char is unsigned.

libmariadb/ma_tls.c:169:31: warning: comparison of constant -1 with expression of type 'char' is always false
      [-Wtautological-constant-out-of-range-compare]
    if ((d1 = ma_hex2int(*p)) == - 1 ||
        ~~~~~~~~~~~~~~~~~~~~~ ^  ~~~
libmariadb/ma_tls.c:170:35: warning: comparison of constant -1 with expression of type 'char' is always false
      [-Wtautological-constant-out-of-range-compare]
        (d2 = ma_hex2int(*(p+1))) == -1 ||
        ~~~~~~~~~~~~~~~~~~~~~~~~~ ^  ~~

To fix this all the pvio_*_blocking functions have been changed to use
int as a return value.

Other my_bool/char differences fixed:

mariadb_dyncol_val_str: fix prototype to use char - like implemented function.

unittest: bind.is_null is my_bool* so we use a my_bool.
This commit is contained in:
Daniel Black
2018-07-18 09:28:05 +10:00
parent d3e06bc161
commit b19f6a475b
9 changed files with 19 additions and 19 deletions
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8
unittest/libmariadb/view.c
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@@ -30,7 +30,7 @@ static int test_view(MYSQL *mysql)
MYSQL_BIND my_bind[1];
char str_data[50];
ulong length = 0L;
long is_null = 0L;
my_bool is_null = 0;
const char *query=
"SELECT COUNT(*) FROM v1 WHERE SERVERNAME=?";
@@ -84,7 +84,7 @@ static int test_view(MYSQL *mysql)
my_bind[0].buffer_length= 50;
my_bind[0].length= &length;
length= 4;
my_bind[0].is_null= (char*)&is_null;
my_bind[0].is_null= &is_null;
rc= mysql_stmt_bind_param(stmt, my_bind);
check_stmt_rc(rc, stmt);
@@ -301,7 +301,7 @@ static int test_view_insert(MYSQL *mysql)
MYSQL_BIND my_bind[1];
int my_val = 0;
ulong my_length = 0L;
long my_null = 0L;
my_bool my_null = 0;
const char *query=
"insert into v1 values (?)";
@@ -328,7 +328,7 @@ static int test_view_insert(MYSQL *mysql)
my_bind[0].buffer_type = MYSQL_TYPE_LONG;
my_bind[0].buffer = (char *)&my_val;
my_bind[0].length = &my_length;
my_bind[0].is_null = (char*)&my_null;
my_bind[0].is_null = &my_null;
rc= mysql_stmt_bind_param(insert_stmt, my_bind);
check_stmt_rc(rc, select_stmt);