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Fix off-by-one OOB write in iconv/tst-iconv-mt
The iconv buffer sizes must not include the \0 string terminator. And the output termination with *outbufpos = '\0' was OOB. Consistently use non-null-terminated buffer sizes. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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@ -57,12 +57,13 @@ worker (void * arg)
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iconv_t cd;
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char ascii[] = CONV_INPUT;
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size_t bytes = sizeof (CONV_INPUT) - 1;
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char *inbufpos = ascii;
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size_t inbytesleft = sizeof (CONV_INPUT);
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size_t inbytesleft = bytes;
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char *utf8 = xcalloc (sizeof (CONV_INPUT), 1);
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char *utf8 = xcalloc (bytes, 1);
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char *outbufpos = utf8;
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size_t outbytesleft = sizeof (CONV_INPUT);
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size_t outbytesleft = bytes;
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if (tidx < TCOUNT/2)
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/* The first half of the worker thread pool synchronize together here,
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@ -91,8 +92,6 @@ worker (void * arg)
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&outbytesleft)
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!= (size_t) -1);
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*outbufpos = '\0';
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xpthread_barrier_wait (&sync);
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TEST_VERIFY_EXIT (iconv_close (cd) == 0);
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@ -104,11 +103,7 @@ worker (void * arg)
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if (tidx < TCOUNT/2)
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xpthread_barrier_wait (&sync);
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if (strncmp (utf8, CONV_INPUT, sizeof CONV_INPUT))
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{
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printf ("FAIL: thread %lx: invalid conversion output from iconv\n", tidx);
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pthread_exit ((void *) (long int) 1);
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}
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TEST_COMPARE_BLOB (utf8, bytes, CONV_INPUT, bytes);
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pthread_exit (NULL);
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}
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