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Fix: Undercounted one byte in xy_strjoin() causes buffer overflow

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[GitHub #232]
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Aoran Zeng 2025-07-19 05:37:56 +08:00
parent c840acc785
commit 41d1775fb9
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1 changed files with 3 additions and 4 deletions
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7
lib/xy.h
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@ -8,7 +8,7 @@
* Contributors : juzeon <skyjuzheng@gmail.com> * Contributors : juzeon <skyjuzheng@gmail.com>
* | * |
* Created On : <2023-08-28> * Created On : <2023-08-28>
* Last Modified : <2025-07-11> * Last Modified : <2025-07-19>
* *
* xy: 襄阳、咸阳 * xy: 襄阳、咸阳
* Corss-Platform C11 utilities for CLI applications in mixed flavor (mostly Ruby) * Corss-Platform C11 utilities for CLI applications in mixed flavor (mostly Ruby)
@ -17,7 +17,7 @@
#ifndef XY_H #ifndef XY_H
#define XY_H #define XY_H
#define _XY_Version "v0.1.5.1-2025/07/11" #define _XY_Version "v0.1.5.2-2025/07/19"
#define _XY_Maintain_URL "https://github.com/RubyMetric/chsrc/blob/dev/lib/xy.h" #define _XY_Maintain_URL "https://github.com/RubyMetric/chsrc/blob/dev/lib/xy.h"
#define _XY_Maintain_URL2 "https://gitee.com/RubyMetric/chsrc/blob/dev/lib/xy.h" #define _XY_Maintain_URL2 "https://gitee.com/RubyMetric/chsrc/blob/dev/lib/xy.h"
@ -247,11 +247,10 @@ xy_strjoin (unsigned int count, ...)
for (int i = 0; i < count; i++) for (int i = 0; i < count; i++)
{ {
// 是否需要重新分配
bool need_realloc = false; bool need_realloc = false;
str = va_arg (args, const char *); str = va_arg (args, const char *);
al_need += strlen (str); al_need += strlen (str) + 1;
while (al_need > al_cur) while (al_need > al_cur)
{ {
al_times += 1; al_times += 1;