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[OSX] Fix "SIGILL: illegal instruction" on macOS Catalina

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on OSX, strncpy may copy to overlapping (protected) memory. this
sometimes happens when loading WAD files.

This patch eliminates these problems for me
This commit is contained in:
Kimberly Wilber 2020-08-15 12:09:41 -04:00
parent a772096757
commit 1bfcec9242
1 changed files with 4 additions and 1 deletions
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3
src/w_wad.c
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@ -150,7 +150,10 @@ FILE *W_OpenWadFile(const char **filename, boolean useerrors)
{
FILE *handle;
if (filenamebuf != *filename) {
// avoid overlap
strncpy(filenamebuf, *filename, MAX_WADPATH);
}
filenamebuf[MAX_WADPATH - 1] = '\0';
*filename = filenamebuf;