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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2016-04-26 17:40:25 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2016-04-26 17:40:25 -0300 |
| commit | f9123b5003e62b6e54996076e860f23aee9a0593 (patch) | |
| tree | c32d506730558f13d1c93c3296c698a6a61cd7a0 /stdio-common/Makefile | |
| parent | 085bbece2c6afc5f13698b52fac0299445c4317f (diff) | |
| download | glibc-f9123b5003e62b6e54996076e860f23aee9a0593.tar.gz glibc-f9123b5003e62b6e54996076e860f23aee9a0593.tar.xz glibc-f9123b5003e62b6e54996076e860f23aee9a0593.zip | |
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..
Diffstat (limited to 'stdio-common/Makefile')
| -rw-r--r-- | stdio-common/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/stdio-common/Makefile b/stdio-common/Makefile index 6c597c1926..4c4834bea0 100644 --- a/stdio-common/Makefile +++ b/stdio-common/Makefile @@ -58,7 +58,7 @@ tests := tstscanf test_rdwr test-popen tstgetln test-fseek \ scanf16 scanf17 tst-setvbuf1 tst-grouping bug23 bug24 \ bug-vfprintf-nargs tst-long-dbl-fphex tst-fphex-wide tst-sprintf3 \ bug25 tst-printf-round bug23-2 bug23-3 bug23-4 bug26 tst-fmemopen3 \ - tst-printf-bz18872 tst-vfprintf-width-prec + tst-printf-bz18872 tst-vfprintf-width-prec tst-fmemopen4 test-srcs = tst-unbputc tst-printf |