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# DP: #212912
# DP: on alpha-linux, make -mieee default and add -mieee-disable switch
# DP: to turn default off (doc patch)
---
gcc/doc/invoke.texi | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
Index: b/src/gcc/doc/invoke.texi
===================================================================
--- a/src/gcc/doc/invoke.texi
+++ b/src/gcc/doc/invoke.texi
@@ -24169,6 +24169,13 @@ able to correctly support denormalized n
values such as not-a-number and plus/minus infinity. Other Alpha
compilers call this option @option{-ieee_with_no_inexact}.
+DEBIAN SPECIFIC: This option is on by default for alpha-linux-gnu, unless
+@option{-ffinite-math-only} (which is part of the @option{-ffast-math}
+set) is specified, because the software functions in the GNU libc math
+libraries generate denormalized numbers, NaNs, and infs (all of which
+will cause a programs to SIGFPE when it attempts to use the results without
+@option{-mieee}).
+
@opindex mieee-with-inexact
@item -mieee-with-inexact
This is like @option{-mieee} except the generated code also maintains
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