https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67046
Bug ID: 67046 Summary: Segmentation fault when a preprocessor directive follows the argument to _Pragma Product: gcc Version: 5.2.0 Status: UNCONFIRMED Severity: minor Priority: P3 Component: preprocessor Assignee: unassigned at gcc dot gnu.org Reporter: dsabogal.ufl at gmail dot com Target Milestone: --- This issue arises from the following (intricate) code. It works when the string literal doesn't new begin on a newline. Failing ======= _Pragma( "message(\"msg\")" # ) int main(void) { return 0; } Working ======= _Pragma("message(\"msg\")" # ) int main(void) { return 0; } Output ====== $ gcc -E test.c # 1 "test.c" # 1 "<built-in>" # 1 "<command-line>" # 1 "/usr/include/stdc-predef.h" 1 3 4 # 1 "<command-line>" 2 # 1 "test.c" gcc: internal compiler error: Segmentation fault (program cc1) Please submit a full bug report, with preprocessed source if appropriate. See <https://bugs.archlinux.org/> for instructions. Version ======= This issue occurs on the few compilers that I've tried (4.9.2 and 5.2.0). Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/5.2.0/lto-wrapper Target: x86_64-unknown-linux-gnu Configured with: /build/gcc/src/gcc-5.2.0/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/ --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared --enable-threads=posix --enable-libmpx --with-system-zlib --with-isl --enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object --enable-linker-build-id --enable-lto --enable-plugin --enable-install-libiberty --with-linker-hash-style=gnu --enable-gnu-indirect-function --disable-multilib --disable-werror --enable-checking=release --with-default-libstdcxx-abi=gcc4-compatible Thread model: posix gcc version 5.2.0 (GCC)