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MDEV-30879 Add support for up to BASE 62 to CONV()

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BASE 62 uses 0-9, A-Z and then a-z to give the numbers 0-61. This patch
increases the range of the string functions to cover this.

Based on ideas and tests in PR #2589, but re-written into the charset
functions.

Includes fix by Sergei, UBSAN complained:
ctype-simple.c:683:38: runtime error: negation of -9223372036854775808
cannot be represented in type 'long long int'; cast to an unsigned
type to negate this value to itself

Co-authored-by: Weijun Huang <huangweijun1001@gmail.com>
Co-authored-by: Sergei Golubchik <serg@mariadb.org>
This commit is contained in:
Andrew Hutchings
2023-11-17 17:41:23 +00:00
committed by Andrew Hutchings
parent be6d48fd53
commit f552febe43
10 changed files with 160 additions and 22 deletions
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include/m_string.h
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@@ -74,6 +74,7 @@ extern "C" {
#endif
/* Declared in int2str() */
extern const char _dig_vec_base62[];
extern const char _dig_vec_upper[];
extern const char _dig_vec_lower[];