pcc i386 -fPIC compiler error on src/complex/catanf.c

[Isaac Dunham <ibid.ag@gmail.com>]

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.

If I try removing flags from the command until it compiles, -fPIC seems
to be what triggers the compiler error.

I'm compiling pcc with these flags:
$ ./configure --prefix=/usr --build=i486-alpine-linux-musl --target=i486-alpine-linux-musl --enable-tls --with-libdir=/usr/lib --with-incdir=/usr/include

With tls disabled (as per default), it still fails the same.

I can't really isolate the error in question, I'm afraid.

Thanks,
Isaac Dunham