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| author | Matheus Castanho <msc@linux.ibm.com> | 2020-01-17 11:44:54 -0300 |
|---|---|---|
| committer | Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com> | 2020-01-17 21:02:13 -0300 |
| commit | 9f8b135f76ac7943d1e108b7f6e816f526b2208c (patch) | |
| tree | 37437279c14e847a9c4d9f42c6f4d1189cb40a8e /nptl/tst-cond19.c | |
| parent | be5c5315b95aaddcef38f1d3f4c526401076bd38 (diff) | |
| download | glibc-9f8b135f76ac7943d1e108b7f6e816f526b2208c.tar.gz glibc-9f8b135f76ac7943d1e108b7f6e816f526b2208c.tar.xz glibc-9f8b135f76ac7943d1e108b7f6e816f526b2208c.zip | |
Fix maybe-uninitialized error on powerpc
The build has been failing on powerpc64le-linux-gnu with GCC 10
due to a maybe-uninitialized error:
../sysdeps/ieee754/dbl-64/mpa.c:875:6: error: ‘w.e’ may be used
uninitialized in this function [-Werror=maybe-uninitialized]
875 | EY -= EX;
| ^~
The warning is thrown because when __inv is called by __dvd *y is not
initialized and if t == 0 before calling __dbl_mp, EY will stay
uninitialized, as the function does not touch it in this case.
However, since t will be set to 1/t before calling __dbl_mp, t == 0 will
never happen, so we can instruct the compiler to ignore this case, which
suppresses the warning.
Tested on powerpc64le.
Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
Diffstat (limited to 'nptl/tst-cond19.c')
0 files changed, 0 insertions, 0 deletions