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| author | Joseph Myers <joseph@codesourcery.com> | 2017-08-21 21:43:32 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2017-08-21 21:43:32 +0000 |
| commit | ea99fcd03875caf59ceda354ec8ed813bb5a5f79 (patch) | |
| tree | 558164d63a8b30ea49b0735ece07992ed5233bf6 | |
| parent | a8410a5fc9305c316633a5a3033f3927b759be35 (diff) | |
| download | glibc-ea99fcd03875caf59ceda354ec8ed813bb5a5f79.tar glibc-ea99fcd03875caf59ceda354ec8ed813bb5a5f79.tar.gz glibc-ea99fcd03875caf59ceda354ec8ed813bb5a5f79.tar.bz2 glibc-ea99fcd03875caf59ceda354ec8ed813bb5a5f79.zip | |
Fix GCC 7 build of k_standard.c.
This patch adds a default case to k_standard.c that calls
__builtin_unreachable, to avoid an uninitialized variable error from
GCC 7 (reported in
<https://sourceware.org/ml/libc-alpha/2017-08/msg01012.html>).
Tested for x86_64 (with GCC 7).
* sysdeps/ieee754/k_standard.c (__kernel_standard): Add default
case calling __builtin_unreachable.
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | sysdeps/ieee754/k_standard.c | 3 |
2 files changed, 8 insertions, 0 deletions
@@ -1,3 +1,8 @@ +2017-08-21 Joseph Myers <joseph@codesourcery.com> + + * sysdeps/ieee754/k_standard.c (__kernel_standard): Add default + case calling __builtin_unreachable. + 2017-08-21 Adhemerval Zanella <adhemerval.zanella@linaro.org> * libio/ioopen.c (_IO_waitpid): Replace waitpid_not_cancel with diff --git a/sysdeps/ieee754/k_standard.c b/sysdeps/ieee754/k_standard.c index 0a0201f1d5..8f906bd604 100644 --- a/sysdeps/ieee754/k_standard.c +++ b/sysdeps/ieee754/k_standard.c @@ -939,6 +939,9 @@ __kernel_standard(double x, double y, int type) break; /* #### Last used is 50/150/250 ### */ + + default: + __builtin_unreachable (); } return exc.retval; } |