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Do a full UCS4 zero termination on iconv converted strings

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We don't necessarily know the size of the output characters, so do a full 32-bit zero termination on the output string.

This fixes garbage at the end of Windows clipboard text

(cherry picked from commit ecbbac7c7292300cf998a2ff04db3c721203b0b7)
This commit is contained in:
Sam Lantinga 2023-07-05 01:22:28 -07:00
parent bad5431a14
commit 52d63ba26c
1 changed files with 6 additions and 6 deletions
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12
src/stdlib/SDL_iconv.c
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@ -810,15 +810,15 @@ char *SDL_iconv_string(const char *tocode, const char *fromcode, const char *inb
return NULL;
}
stringsize = inbytesleft > 4 ? inbytesleft : 4;
string = (char *)SDL_malloc(stringsize + 1);
stringsize = inbytesleft;
string = (char *)SDL_malloc(stringsize + sizeof(Uint32));
if (string == NULL) {
SDL_iconv_close(cd);
return NULL;
}
outbuf = string;
outbytesleft = stringsize;
SDL_memset(outbuf, 0, 4);
SDL_memset(outbuf, 0, sizeof(Uint32));
while (inbytesleft > 0) {
const size_t oldinbytesleft = inbytesleft;
@ -828,7 +828,7 @@ char *SDL_iconv_string(const char *tocode, const char *fromcode, const char *inb
{
char *oldstring = string;
stringsize *= 2;
string = (char *)SDL_realloc(string, stringsize + 1);
string = (char *)SDL_realloc(string, stringsize + sizeof(Uint32));
if (string == NULL) {
SDL_free(oldstring);
SDL_iconv_close(cd);
@ -836,7 +836,7 @@ char *SDL_iconv_string(const char *tocode, const char *fromcode, const char *inb
}
outbuf = string + (outbuf - oldstring);
outbytesleft = stringsize - (outbuf - string);
SDL_memset(outbuf, 0, 4);
SDL_memset(outbuf, 0, sizeof(Uint32));
continue;
}
case SDL_ICONV_EILSEQ:
@ -855,7 +855,7 @@ char *SDL_iconv_string(const char *tocode, const char *fromcode, const char *inb
break;
}
}
*outbuf = '\0';
SDL_memset(outbuf, 0, sizeof(Uint32));
SDL_iconv_close(cd);
return string;