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authorChristoph M. Becker <cmbecker69@gmx.de>2020-05-15 09:09:41 +0200
committerChristoph M. Becker <cmbecker69@gmx.de>2020-05-15 09:09:41 +0200
commitd1cd489a53c697898c2da5101c775bd6259f4be0 (patch)
treebdbf92dd32c447635024fbe189d30a42dabc76b8 /ext/mysqlnd/mysql_float_to_double.h
parent5bdb4ab786b06dbf7ec4ece40b45f81287caba2d (diff)
downloadphp-git-d1cd489a53c697898c2da5101c775bd6259f4be0.tar.gz
Fix #79596: MySQL FLOAT truncates to int some locales
We must not do locale aware float to string conversion here; instead we using our `snprintf()` implementation with the `F` specifier.
Diffstat (limited to 'ext/mysqlnd/mysql_float_to_double.h')
-rw-r--r--ext/mysqlnd/mysql_float_to_double.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/ext/mysqlnd/mysql_float_to_double.h b/ext/mysqlnd/mysql_float_to_double.h
index 7ac77d9127..744d56a5f3 100644
--- a/ext/mysqlnd/mysql_float_to_double.h
+++ b/ext/mysqlnd/mysql_float_to_double.h
@@ -31,7 +31,7 @@
/*
* Convert from a 4-byte float to a 8-byte decimal by first converting
- * the float to a string, and then the string to a double.
+ * the float to a string (ignoring localization), and then the string to a double.
* The decimals argument specifies the precision of the output. If decimals
* is less than zero, then a gcvt(3) like logic is used with the significant
* digits set to FLT_DIG i.e. 6.
@@ -42,7 +42,7 @@ static inline double mysql_float_to_double(float fp4, int decimals) {
if (decimals < 0) {
php_gcvt(fp4, FLT_DIG, '.', 'e', num_buf);
} else {
- php_sprintf(num_buf, "%.*f", decimals, fp4);
+ snprintf(num_buf, MAX_CHAR_BUF_LEN, "%.*F", decimals, fp4);
}
return zend_strtod(num_buf, NULL);