diff options
Diffstat (limited to 'sysdeps/ieee754/flt-32')
| -rw-r--r-- | sysdeps/ieee754/flt-32/k_rem_pio2f.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/sysdeps/ieee754/flt-32/k_rem_pio2f.c b/sysdeps/ieee754/flt-32/k_rem_pio2f.c index fdf2b5da2c..ea4915b765 100644 --- a/sysdeps/ieee754/flt-32/k_rem_pio2f.c +++ b/sysdeps/ieee754/flt-32/k_rem_pio2f.c @@ -183,7 +183,17 @@ recompute: float fv = 0.0; for (i=jz;i>=0;i--) fv = math_narrow_eval (fv + fq[i]); y[0] = (ih==0)? fv: -fv; + /* GCC mainline (to be GCC 9), as of 2018-05-22 on + i686, warns that fq[0] may be used uninitialized. + This is not possible because jz is always + nonnegative when the above loop initializing fq is + executed, because the result is never zero to full + precision (this function is not called for zero + arguments). */ + DIAG_PUSH_NEEDS_COMMENT; + DIAG_IGNORE_NEEDS_COMMENT (9, "-Wmaybe-uninitialized"); fv = math_narrow_eval (fq[0]-fv); + DIAG_POP_NEEDS_COMMENT; for (i=1;i<=jz;i++) fv = math_narrow_eval (fv + fq[i]); y[1] = (ih==0)? fv: -fv; break; |