diff options
Diffstat (limited to 'sysdeps/ieee754/dbl-64/k_rem_pio2.c')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/k_rem_pio2.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sysdeps/ieee754/dbl-64/k_rem_pio2.c b/sysdeps/ieee754/dbl-64/k_rem_pio2.c index 820fe7787e..d8403dc345 100644 --- a/sysdeps/ieee754/dbl-64/k_rem_pio2.c +++ b/sysdeps/ieee754/dbl-64/k_rem_pio2.c @@ -330,7 +330,16 @@ recompute: 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; |