cf5228cea1
In Seventh Edition UNIX, the last pointer passed to free() was guaranteed to not actually have been freed allowing memory to be "compacted" via the following pattern: free(foo); foo = realloc(foo, newsize); Further, Andrew Koenig reports in "C Traps and Pitfalls" that the original realloc() implementation required this pattern. The C standard is clear that this is Undefined Behavior. Modern allocators don't support it and no portable code could rely on it so remove this support. Note: the removed implementation contains an off-by-one error and if an item isn't found on the freelist, then twice as much memory as the largest possible allocation will be copied. Reviewed by: kib, imp Obtained from: CheriBSD Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D21296 |
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| atf | ||
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| blacklistd-helper | ||
| bootpd | ||
| comsat | ||
| dma | ||
| fingerd | ||
| ftpd | ||
| getty | ||
| hyperv | ||
| mail.local | ||
| makewhatis.local | ||
| mknetid | ||
| pppoed | ||
| rbootd | ||
| rc | ||
| revnetgroup | ||
| rpc.rquotad | ||
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| rpc.rwalld | ||
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| rtld-elf | ||
| save-entropy | ||
| smrsh | ||
| talkd | ||
| tcpd | ||
| telnetd | ||
| tests | ||
| tftp-proxy | ||
| tftpd | ||
| ulog-helper | ||
| ypxfr | ||
| Makefile | ||
| Makefile.amd64 | ||
| Makefile.i386 | ||
| Makefile.inc | ||