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Use qemu_tolower() and qemu_toupper(), not tolower() and toupper()

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On NetBSD, where tolower() and toupper() are implemented using an
array lookup, the compiler warns if you pass a plain 'char'
to these functions:

gdbstub.c:914:13: warning: array subscript has type 'char'

This reflects the fact that toupper() and tolower() give
undefined behaviour if they are passed a value that isn't
a valid 'unsigned char' or EOF.

We have qemu_tolower() and qemu_toupper() to avoid this problem;
use them.

(The use in scsi-generic.c does not trigger the warning because
it passes a uint8_t; we switch it anyway, for consistency.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> for the s390 part.
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Message-id: 1500568290-7966-1-git-send-email-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2017-07-20 17:31:30 +01:00
parent 02ffa034fb
commit 95a5befc2f
4 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
gdbstub.c
View File

@ -911,7 +911,7 @@ static int gdb_handle_vcont(GDBState *s, const char *p)
cur_action = *p++;
if (cur_action == 'C' || cur_action == 'S') {
cur_action = tolower(cur_action);
cur_action = qemu_tolower(cur_action);
res = qemu_strtoul(p + 1, &p, 16, &tmp);
if (res) {
goto out;

2
hw/s390x/s390-virtio-ccw.c
View File

@ -318,7 +318,7 @@ static void machine_set_loadparm(Object *obj, const char *val, Error **errp)
int i;
for (i = 0; i < sizeof(ms->loadparm) && val[i]; i++) {
uint8_t c = toupper(val[i]); /* mimic HMC */
uint8_t c = qemu_toupper(val[i]); /* mimic HMC */
if (('A' <= c && c <= 'Z') || ('0' <= c && c <= '9') || (c == '.') ||
(c == ' ')) {

2
hw/scsi/scsi-generic.c
View File

@ -406,7 +406,7 @@ static int read_naa_id(const uint8_t *p, uint64_t *p_wwn)
}
*p_wwn = 0;
for (i = 8; i < 24; i++) {
char c = toupper(p[i]);
char c = qemu_toupper(p[i]);
c -= (c >= '0' && c <= '9' ? '0' : 'A' - 10);
*p_wwn = (*p_wwn << 4) | c;
}

4
target/ppc/monitor.c
View File

@ -115,14 +115,14 @@ int target_get_monitor_def(CPUState *cs, const char *name, uint64_t *pval)
CPUPPCState *env = &cpu->env;
/* General purpose registers */
if ((tolower(name[0]) == 'r') &&
if ((qemu_tolower(name[0]) == 'r') &&
ppc_cpu_get_reg_num(name + 1, ARRAY_SIZE(env->gpr), &regnum)) {
*pval = env->gpr[regnum];
return 0;
}
/* Floating point registers */
if ((tolower(name[0]) == 'f') &&
if ((qemu_tolower(name[0]) == 'f') &&
ppc_cpu_get_reg_num(name + 1, ARRAY_SIZE(env->fpr), &regnum)) {
*pval = env->fpr[regnum];
return 0;