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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2016-04-26 17:40:25 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2016-04-26 17:40:25 -0300
commitf9123b5003e62b6e54996076e860f23aee9a0593 (patch)
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libio: Update internal fmemopen position after write (BZ #20005)
Current GLIBC fmemopen fails with a simple testcase: char buffer[500] = "x"; FILE *stream; stream = fmemopen(buffer, 500, "r+"); fwrite("fish",sizeof(char),5,stream); printf("pos-1:%ld\n",ftell(stream)); fflush(stream); printf("pos-2:%ld\n",ftell(stream)); It returns: pos-1:5 pos-2:0 Where it should return: pos-1:5 pos-2:5 This is due the internal write function does not correctly update the internal object position state and then the seek operation returns a wrong value. This patch fixes it. It fixes both BZ #20005 and BZ #19230 (marked as duplicated). A new test is added to check for such case. Tested on x86_64 and i686. * libio/fmemopen.c (fmemopen_write): Update internal position after write. * stdio-common/Makefile (tests): Add tst-fmemopen4.c. * stdio-common/tst-fmemopen4.c: New file..
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+2016-04-26 Adhemerval Zanella <adhemerval.zanella@linaro.org>
+
+ [BZ #20005]
+ * libio/fmemopen.c (fmemopen_write): Update internal position after
+ write.
+ * stdio-common/Makefile (tests): Add tst-fmemopen4.c.
+ * stdio-common/tst-fmemopen4.c: New file..
+
2016-04-26 Joseph Myers <joseph@codesourcery.com>
[BZ #19996]