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poll syscall: add volatile keyword to fd count to prevent a loop from being optimized out

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Matheus
2023-01-02 23:42:25 -03:00
parent 5fb8398c1a
commit 78b9724b38
1 changed files with 3 additions and 4 deletions
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src/sys/syscalls/poll.c
+3 -4
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@@ -11,7 +11,7 @@
#define MAXNFDS 4096 #define MAXNFDS 4096
syscallret syscall_poll(pollfd *fds, size_t nfds, int timeoutms){ syscallret syscall_poll(pollfd *fds, volatile int nfds, int timeoutms){
syscallret retv; syscallret retv;
retv.ret = -1; retv.ret = -1;
@@ -117,8 +117,7 @@ syscallret syscall_poll(pollfd *fds, size_t nfds, int timeoutms){
size_t eventcount = 0; size_t eventcount = 0;
for(uintmax_t i = 0; i < nfds; ++i){ for(int i = 0; i < nfds; ++i){
if(ilist[i].fd < 0) if(ilist[i].fd < 0)
continue; continue;
@@ -138,6 +137,6 @@ syscallret syscall_poll(pollfd *fds, size_t nfds, int timeoutms){
if(ilist) if(ilist)
free(ilist); free(ilist);
return retv; return retv;
} }