[issue] Warnings when building raylib from source

[SoNewBee]

When building raylib using cmake with Release option,there are warnings:
In file included from D:\raylib-master\src\raudio.c:282:
In function 'memcopy',
inlined from 'jar_mod_load' at D:\raylib-master\src\external/jar_mod.h:1133:13:
D:\raylib-master\src\external/jar_mod.h:370:13: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
370 | d[i]=s[i];
| ~~~~^~~~~
D:\raylib-master\src\external/jar_mod.h: In function 'jar_mod_load':
D:\raylib-master\src\external/jar_mod.h:125:13: note: at offset 1080 into destination object 'title' of size 20
125 | muchar title[20];
| ^~~~~
In function 'memcopy',
inlined from 'jar_mod_load' at D:\raylib-master\src\external/jar_mod.h:1133:13:
D:\raylib-master\src\external/jar_mod.h:370:13: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
370 | d[i]=s[i];
| ~~~~^~~~~
D:\raylib-master\src\external/jar_mod.h: In function 'jar_mod_load':
D:\raylib-master\src\external/jar_mod.h:125:13: note: at offset 1081 into destination object 'title' of size 20
125 | muchar title[20];
| ^~~~~
In function 'memcopy',
inlined from 'jar_mod_load' at D:\raylib-master\src\external/jar_mod.h:1133:13:
D:\raylib-master\src\external/jar_mod.h:370:13: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
370 | d[i]=s[i];
| ~~~~^~~~~
D:\raylib-master\src\external/jar_mod.h: In function 'jar_mod_load':
D:\raylib-master\src\external/jar_mod.h:125:13: note: at offset 1082 into destination object 'title' of size 20
125 | muchar title[20];
| ^~~~~
In function 'memcopy',
inlined from 'jar_mod_load' at D:\raylib-master\src\external/jar_mod.h:1133:13:
D:\raylib-master\src\external/jar_mod.h:370:13: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
370 | d[i]=s[i];
| ~~~~^~~~~
D:\raylib-master\src\external/jar_mod.h: In function 'jar_mod_load':
D:\raylib-master\src\external/jar_mod.h:125:13: note: at offset 1083 into destination object 'title' of size 20
125 | muchar title[20];

[Peter0x44]

Having warnings isn't a bug.
Have you looked into them to see if they are false positive, or their cause?

[raysan5]

Issue belongs to external library, also, warnings, not errors.

[SoNewBee]

Issue belongs to external library, also, warnings, not errors.

OK, I have modified the title, so could you please tell me how to fix it?

Having warnings isn't a bug. Have you looked into them to see if they are false positive, or their cause?

No, I'm a newcomer and just trying it.

[Peter0x44]

so could you please tell me how to fix it?

You don't.

[rrwalton]

Hi, I'm running into this :). If there was a build target we could set as SYSTEM in CMake it could silence the warnings for consumers of raylib. Setting the raylib and GLFW targets to SYSTEM doesn't catch this particular warning. I had a quick root around in the raylib CMake but couldn't immediately tell which target jar_mod.h was being included with.