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loadso, dlsym, SDL_LoadFunction: cleanup the underscored name path.

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- strlcpy was passed a wrong buffer length parameter. has worked so
  far by luck.
- use memcpy instead of strlcpy for simplicity.
- 'append' has been a typo: should be 'prepend'.

(cherry-picked from commit 3d415bc5d6)
This commit is contained in:
Ozkan Sezer 2022-10-22 11:56:56 +03:00
parent b435252b29
commit 51958da000
1 changed files with 4 additions and 4 deletions
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8
src/loadso/dlopen/SDL_sysloadso.c
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@ -60,12 +60,12 @@ SDL_LoadFunction(void *handle, const char *name)
{ {
void *symbol = dlsym(handle, name); void *symbol = dlsym(handle, name);
if (symbol == NULL) { if (symbol == NULL) {
/* append an underscore for platforms that need that. */ /* prepend an underscore for platforms that need that. */
SDL_bool isstack; SDL_bool isstack;
size_t len = 1 + SDL_strlen(name) + 1; size_t len = SDL_strlen(name) + 1;
char *_name = SDL_small_alloc(char, len, &isstack); char *_name = SDL_small_alloc(char, len + 1, &isstack);
_name[0] = '_'; _name[0] = '_';
SDL_strlcpy(&_name[1], name, len); SDL_memcpy(&_name[1], name, len);
symbol = dlsym(handle, _name); symbol = dlsym(handle, _name);
SDL_small_free(_name, isstack); SDL_small_free(_name, isstack);
if (symbol == NULL) { if (symbol == NULL) {