gcc 4.9.2 cygwin64 internal error parsing decimal float point values

Marc Reynolds marc.b.reynolds@gmail.com
Sat Jan 17 17:36:00 GMT 2015


NOTE: I am not on neither of these mailing list so including me on any messages which might require further information

The precompiled binary installed from the package manager labeled "4.9.2-1".

The following program reproduces:

-----

int main() 
{
  float f = 1.17549435082228750797e-38F;
  return f != 0x0.000002P-126f;
}

----

init2.c:37: MPFR assertion failed: (32 - 0) == ((32 - 0)/8) * 8 && sizeof(mp_limb_t) == ((32 - 0)/8)
test2.c: In function 'main':
test2.c:3:3: internal compiler error: Aborted
   float f = 1.17549435082228750797e-38F;
   ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

----


For form sake: gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-cygwin/4.9.2/lto-wrapper.exe
Target: x86_64-pc-cygwin
Configured with: /cygdrive/i/szsz/tmpp/gcc/gcc-4.9.2-1.x86_64/src/gcc-4.9.2/configure --srcdir=/cygdrive/i/szsz/tmpp/gcc/gcc-4.9.2-1.x86_64/src/gcc-4.9.2 --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --libexecdir=/usr/libexec --datadir=/usr/share --localstatedir=/var --sysconfdir=/etc --libdir=/usr/lib --datarootdir=/usr/share --docdir=/usr/share/doc/gcc --htmldir=/usr/share/doc/gcc/html -C --build=x86_64-pc-cygwin --host=x86_64-pc-cygwin --target=x86_64-pc-cygwin --without-libiconv-prefix --without-libintl-prefix --libexecdir=/usr/lib --enable-shared --enable-shared-libgcc --enable-static --enable-version-specific-runtime-libs --enable-bootstrap --enable-__cxa_atexit --with-dwarf2 --with-tune=generic --enable-languages=ada,c,c++,fortran,lto,objc,obj-c++ --enable-graphite --enable-threads=posix --enable-libatomic --enable-libgomp --disable-libitm --enable-libquadmath --enable-libquadmath-support --enable-libssp --enable-libada --enable-libgcj-sublibs --disable-java-awt --disable-symvers --with-ecj-jar=/usr/share/java/ecj.jar --with-gnu-ld --with-gnu-as --with-cloog-include=/usr/include/cloog-isl --without-libiconv-prefix --without-libintl-prefix --with-system-zlib --enable-linker-build-id
Thread model: posix
gcc version 4.9.2 (GCC)



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