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| author | Joseph Myers <joseph@codesourcery.com> | 2016-11-11 21:05:51 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2016-11-11 21:05:51 +0000 |
| commit | 84c426b85db7cc595f8c5d3ec549009490ca6299 (patch) | |
| tree | 4146d1dca9a07de4913cff8af602c15ed78e8b20 /termios/tcflow.c | |
| parent | 8129bf7732decf4472caf8b1c339e4abd072f0ab (diff) | |
| download | glibc-84c426b85db7cc595f8c5d3ec549009490ca6299.tar.gz glibc-84c426b85db7cc595f8c5d3ec549009490ca6299.tar.xz glibc-84c426b85db7cc595f8c5d3ec549009490ca6299.zip | |
Ignore -Wmaybe-uninitialized in stdlib/bug-getcontext.c.
Doing all-ABIs compile testing produces a compiler warning in
stdlib/bug-getcontext.c on nios2 and tilepro (with GCC 5 branch):
bug-getcontext.c: In function 'do_test':
bug-getcontext.c:53:6: error: 'except_mask' may be used uninitialized in this function [-Werror=maybe-uninitialized]
if (mask != except_mask)
^
This warning appears nonsensical; except_mask is initialized where
it's declared. I think what must be happening here is that the
compiler is confused by the returns-twice nature of getcontext: if
there were a call to setcontext, local variables could indeed have
lost their values on the second return from getcontext. This patch
duly uses the DIAG_* macros to disable the warning here.
Tested for nios2 and tilepro (compilation only; after this patch all
the tests compile, though there are other failures) and x86_64 (full
testsuite run).
* stdlib/bug-getcontext.c: Include <libc-internal.h>.
(do_test): Disable -Wmaybe-uninitialized around uses of
except_mask.
Diffstat (limited to 'termios/tcflow.c')
0 files changed, 0 insertions, 0 deletions