https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115312
--- Comment #9 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Lewis Hyatt <lhy...@gcc.gnu.org>: https://gcc.gnu.org/g:038d64f62271ddc62aa35d0a5dfd3843fdb9e6d7 commit r15-1803-g038d64f62271ddc62aa35d0a5dfd3843fdb9e6d7 Author: Lewis Hyatt <lhy...@gmail.com> Date: Sat Jun 15 21:09:01 2024 -0400 preprocessor: Create the parser before handling command-line includes [PR115312] Since r14-2893, we create a parser object in preprocess-only mode for the purpose of parsing #pragma while preprocessing. The parser object was formerly created after calling c_finish_options(), which leads to problems on platforms that don't use stdc-predef.h (such as MinGW, as reported in the PR). On such platforms, the call to c_finish_options() will process the first command-line-specified include file. If that includes a PCH, then c-ppoutput.cc will encounter a state it did not anticipate. Fix it by creating the parser prior to calling c_finish_options(). gcc/c-family/ChangeLog: PR pch/115312 * c-opts.cc (c_common_init): Call c_init_preprocess() before c_finish_options() so that a parser is available to process any includes specified on the command line. gcc/testsuite/ChangeLog: PR pch/115312 * g++.dg/pch/pr115312.C: New test. * g++.dg/pch/pr115312.Hs: New test.
