I am using the last mspgcc compiler for MSP430 downloaded at http://sourceforge.net/project/showfiles.php?group_id=42303&package_id=68584.
The bug is easily reproducible applying the following compiler line to the source main of example tasker msp430-gcc -mmcu=msp430x147 -g -O3 -Wall -Wcast-align -Wcast-qual -Wimplicit -Wmissing-declarations -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wredundant-decls -Wreturn-type -Wshadow -Wstrict-prototypes -Wswitch -Wunused -Wunreachable-code -c -o main.o main.c in the original line -Wunreachable-code in missed. The error raised is main.c: In function `task1': main.c:126: internal error: Segmentation fault compiler version: Reading specs from /cygdrive/c/mspgcc/bin/../lib/gcc-lib/msp430/3.2.3/specs Configured with: ./configure --target=msp430 --prefix=/f/prog/msp430/sf/packagin g/build/installed --disable-nls Thread model: single gcc version 3.2.3 -- Summary: msp430-gcc with -Wunreachable-code Segmentation fault Product: gcc Version: 3.2.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: stefano dot franzoni at marposs dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28476