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ext/json/parser/parser.rl: Use "signed" char to contain negative values

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char is not always signed.  In fact, it is unsigned in arm.

https://rubyci.org/logs/rubyci.s3.amazonaws.com/scw-9d6766/ruby-master/log/20191004T181708Z.log.html.gz
```
compiling parser.c
parser.rl: In function ‘unescape_unicode’:
parser.rl:50:5: warning: comparison is always false due to limited range of data type [-Wtype-limits]
     if (b < 0) return UNI_REPLACEMENT_CHAR;
     ^
```
This commit is contained in:
Yusuke Endoh 2019-10-05 07:00:57 +09:00
parent 5717e55e9a
commit 417c64b9a8
2 changed files with 4 additions and 4 deletions
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4
ext/json/parser/parser.c
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@ -28,7 +28,7 @@ enc_raise(rb_encoding *enc, VALUE exc, const char *fmt, ...)
/* unicode */
static const char digit_values[256] = {
static const signed char digit_values[256] = {
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1,
@ -47,7 +47,7 @@ static const char digit_values[256] = {
static UTF32 unescape_unicode(const unsigned char *p)
{
char b;
signed char b;
UTF32 result = 0;
b = digit_values[p[0]];
if (b < 0) return UNI_REPLACEMENT_CHAR;

4
ext/json/parser/parser.rl
View file

@ -25,7 +25,7 @@ enc_raise(rb_encoding *enc, VALUE exc, const char *fmt, ...)
/* unicode */
static const char digit_values[256] = {
static const signed char digit_values[256] = {
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1,
@ -44,7 +44,7 @@ static const char digit_values[256] = {
static UTF32 unescape_unicode(const unsigned char *p)
{
char b;
signed char b;
UTF32 result = 0;
b = digit_values[p[0]];
if (b < 0) return UNI_REPLACEMENT_CHAR;