59552ecb8e
mruby-sprintf: protect format string from mutation during callbacks
...
mrb_str_format captured raw C pointers (p, end) into the format
string's buffer before the main loop. The %s and %p specifiers call
to_s and inspect, which can invoke Ruby code that mutates the format
string via String#replace, freeing or reallocating its buffer. The
loop then continued iterating with dangling pointers, reading freed
memory and potentially leaking adjacent heap contents into the result.
Duplicate the format string with mrb_str_dup() before the loop. This
is O(1) because mrb_str_dup shares the underlying buffer; if the
original is later mutated via String#replace, str_replace decrements
the shared refcount, leaving our duplicate's buffer intact.
Co-authored-by: Claude <noreply@anthropic.com >
2026-04-10 14:51:59 +09:00
aea3e7aedd
mruby-sprintf: raise ArgumentError for % at the bottom
2024-05-03 07:46:45 +09:00
b9bde0c918
mruby-sprintf: reduce float digits to avoid test failure.
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Too many digits to fit in single precision float numbers, so that tests
fail when `MRB_USE_FLOAT32` defined.
2021-05-22 14:46:37 +09:00
3252518a3c
Fix tests to work with MRB_USE_FLOAT32; fix #5329
2021-02-07 14:55:45 +09:00
b44326b561
Add tests for CRuby bug #9982
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https://bugs.ruby-lang.org/issues/9982
2020-10-12 16:21:45 +09:00
03b0741994
Remove unnecessary sprintf test that fails since 91368c1.
2020-05-07 10:31:49 +09:00
2ceab2d270
Supports some specifier flags with mrb_float_to_str()
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Changed to understand `#`, `0`, `-`, ` ` and `+`.
Based on src/stdio/vfprintf.c in git://git.musl-libc.org/musl
2020-04-11 22:11:10 +09:00
cca19532c5
Remove Kernel#class_defined? which is not available in CRuby; #3829
2019-01-03 11:34:35 +09:00
5d781312ca
Support MRB_WIHTOUT_FLOAT to mruby-sprintf
2017-10-13 16:42:35 +09:00
17c249780f
fix String#% %d test with MRB_INT16 set
2017-08-25 14:36:05 +02:00
2730231e50
added tests for #3736
2017-07-16 22:34:23 +02:00
f0abd4241f
Avoid mrb_funcall() unless absolutely necessary; ref #3722
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As a result, `#chr` is not called for ch < 0x80, so we need to
update the "invalid chr" test.
2017-06-28 12:03:53 +09:00
30df7c8762
Fix segmentation fault ref: #3648
2017-05-08 23:18:14 +09:00
7314423bd1
Fix space flag when Inf/NaN and width==3
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While `"% 2f"` and `"% 4f"` result in `" Inf"` and `" Inf"`
respectively, `"% 3f"` results in `"Inf"` (no space).
2017-04-23 09:54:20 +09:00
d8c4fe7bcb
Fix out-of-bound access
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Get rid of out-of-bound access when single % at the end.
2017-03-13 23:56:33 +09:00
9bf1c0e1dc
Fix segfault when Fixnum#chr doesn't return a string
2016-11-23 15:18:52 -05:00
4289e0cd81
Fix for sprintf test exceeding bounds with MRB_INT16
2016-11-21 00:37:03 +01:00
1a9b607a4d
binary sprintf should not be restricted by mrb_int size; fix #3025
2015-11-19 22:49:50 +09:00
fe9f3fdd20
add 'String#%'.
2014-06-03 16:31:20 +09:00
97136825e2
Separate Kernel#sprintf support from mruby core. It's moved to mrbgems.
2013-03-04 23:04:39 +09:00
Yukihiro "Matz" Matsumoto