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fix ptrace (maybe)

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This commit is contained in:
Rich Felker
2011-09-16 10:13:00 -04:00
parent 71f7a3c2ce
commit d431d4546e
1 changed files with 8 additions and 1 deletions
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9
src/misc/ptrace.c
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@@ -8,11 +8,18 @@ long ptrace(int req, ...)
va_list ap;
pid_t pid;
void *addr, *data, *addr2;
long ret, result;
va_start(ap, req);
pid = va_arg(ap, pid_t);
addr = va_arg(ap, void *);
data = va_arg(ap, void *);
addr2 = va_arg(ap, void *);
va_end(ap);
return syscall(SYS_ptrace, req, pid, addr, data, addr2);
if (req<4U) data = &result;
ret = syscall(SYS_ptrace, req, pid, addr, data, addr2);
if (ret<0 || req>=4U) return ret;
return result;
}