Fixed integer overflow while searching line character in xsrc

kala13x · kala13x · commit b8c1d61c931d · 2025-02-15T06:08:19.000+04:00
diff --git a/src/sys/xfs.c b/src/sys/xfs.c
@@ -1217,7 +1217,7 @@ static int XFile_CheckCriteria(xfile_search_t *pSearch, const char *pPath, const
             return XSTDNON;
         }
 
-        while (nPosit && pBuffer[nPosit] != '\n') nPosit--;
+        while (nPosit > 1 && pBuffer[nPosit] != '\n') nPosit--;
         if (pBuffer[nPosit] == '\n') nPosit++;
 
         int nEnd = xstrsrc(&pBuffer[nPosit], "\n");

Original file line number	Diff line number	Diff line change
`@@ -1217,7 +1217,7 @@ static int XFile_CheckCriteria(xfile_search_t pSearch, const char pPath, const`
`1217`	`1217`	`return XSTDNON;`
`1218`	`1218`	`}`
`1219`	`1219`
`1220`		`- while (nPosit && pBuffer[nPosit] != '\n') nPosit--;`
	`1220`	`+ while (nPosit > 1 && pBuffer[nPosit] != '\n') nPosit--;`
`1221`	`1221`	`if (pBuffer[nPosit] == '\n') nPosit++;`
`1222`	`1222`
`1223`	`1223`	`int nEnd = xstrsrc(&pBuffer[nPosit], "\n");`