...../lib/warnings.t 503 1 0.20% 224
This is this test:
exec $^X, "-e0" ;...
and it is failing with ENOTSUP. Really. I checked with ktrace:
Of course, this can't be happening, as the OS X man page doesn't list ENOTSUP as a possible return from execve. Hence I don't know where to look next.
(Darwin source code....?)
It turns out that you can't execve with more than one running thread (apparently). The code below demonstrates. I don't know why this is the case (or why the test code is hitting this), but I figured this out by looking at the kernel source code (xnu project, in Darwin).
JEff
----------------------------------------------------------------------
#include <stdio.h> #include <unistd.h> #include <errno.h>
extern char **environ;
void* doNothing(void *data)
{
while(1) {}
return NULL;
}int main (int argc, const char * argv[])
{
pthread_t thread;
int retVal;printf("Starting!\n");
pthread_create(&thread, NULL, doNothing, NULL);
retVal = execve("/usr/bin/true", argv, environ);
printf("retVal = %d, errno = %d\n", retVal, errno);
perror(NULL);return 0; } /* output:
Starting! retVal = -1, errno = 45 Operation not supported */
