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Message-ID: <20150104210403.GA1801@newbook>
Date: Sun, 4 Jan 2015 13:04:04 -0800
From: Isaac Dunham <ibid.ag@...il.com>
To: Anders Magnusson <ragge@...d.ltu.se>
Cc: Iain Hibbert <plunky@...ig.net>, musl@...ts.openwall.com,
pcc@...ts.ludd.ltu.se
Subject: Re: [Pcc] pcc i386 -fPIC compiler error on src/complex/catanf.c
On Sun, Jan 04, 2015 at 08:24:54PM +0100, Anders Magnusson wrote:
> Iain Hibbert skrev den 2015-01-04 18:47:
> >On Sat, 3 Jan 2015, Isaac Dunham wrote:
> >
> >>Hello,
> >>With recent pcc (built from cvs since 1.1.0 was released), I've tried
> >>building musl a few times, but the shared build consistently dies
> >>on src/complex/catanf.c (command wrapped to avoid getting mangled
> >>in the mail):
> >>$ make
> >>pcc -std=c99 -nostdinc -ffreestanding -fexcess-precision=standard \
> >> -frounding-math -D_XOPEN_SOURCE=700 -I./arch/i386 -I./src/internal \
> >> -I./include -Os -pipe -fomit-frame-pointer -fno-unwind-tables \
> >> -fno-asynchronous-unwind-tables -Wa,--noexecstack -march=i486 \
> >> -Werror=implicit-function-declaration -Werror=implicit-int \
> >> -Werror=pointer-sign -Werror=pointer-arith -fno-stack-protector \
> >> -fPIC -DSHARED -c -o src/complex/catanf.lo src/complex/catanf.c
> >>src/complex/catanf.c, line 80: compiler error: bad STCALL hidden reg
> >>error: /usr/libexec/ccom terminated with status 1
> >>Makefile:124: recipe for target 'src/complex/catanf.lo' failed
> >>make: *** [src/complex/catanf.lo] Error 1
> >>
> >>Line 80 is the closing bracket of _redupif(), which is fairly basic
> >>floating point math.
> >it will likely be something inside that function that does not show up
> >until the function is being emitted. STCALL is something to do with
> >structure arguments, which some kinds of floating point are big enough to
> >be considered.. so I guess some kind of double or long double arguments?
> >
> This assertion occurs because pass2 code expects a hidden argument to be
> present when calling a struct return function, but the hidden arg cannot be
> found in the argument list, and in this special case the hidden arg shall be
> in a register.
>
> I would like a preprocessed output from the above to diagnose further (which
> means to just add a -E to the line above).
Ok, will send.
Thanks!
Isaac Dunham
Download attachment "catanf.i.gz" of type "application/octet-stream" (2638 bytes)
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