tccpp: fix issues, add tests

* fix some macro expansion issues
* add some pp tests in tests/pp
* improved tcc -E output for better diff'ability
* remove -dD feature (quirky code, exotic feature,
  didn't work well)

Based partially on ideas / researches from PipCet

Some issues remain with VA_ARGS macros (if used in a
rather tricky way).

Also, to keep it simple, the pp doesn't automtically
add any extra spaces to separate tokens which otherwise
would form wrong tokens if re-read from tcc -E output
(such as '+' '=')  GCC does that, other compilers don't.

 * cleanups
  - #line 01 "file" / # 01 "file" processing
  - #pragma comment(lib,"foo")
  - tcc -E: forward some pragmas to output (pack, comment(lib))
  - fix macro parameter list parsing mess from
    a3fc54345949535524d01319e1ca6378b7c2c201
    a715d7143d9d17da17e67fec6af1c01409a71a31
    (some coffee might help, next time ;)
  - introduce TOK_PPSTR - to have character constants as
    written in the file (similar to TOK_PPNUM)
  - allow '\' appear in macros
  - new functions begin/end_macro to:
      - fix switching macro levels during expansion
      - allow unget_tok to unget more than one tok
  - slight speedup by using bitflags in isidnum_table

Also:
  - x86_64.c : fix decl after statements
  - i386-gen,c : fix a vstack leak with VLA on windows
  - configure/Makefile : build on windows (MSYS) was broken
  - tcc_warning: fflush stderr to keep output order (win32)

1 files changed, 35 insertions, 0 deletions

diff --git a/tests/pp/Makefile b/tests/pp/Makefile
new file mode 100644
index 0000000..c656f9a
--- /dev/null
+++ b/tests/pp/Makefile
@@ -0,0 +1,35 @@
+#
+# credits: 01..13.c from the pcc cpp-tests suite
+#
+
+TCC = ../../tcc
+TESTS = $(patsubst %.c,%.test,$(wildcard *.c))
+
+all test : $(TESTS)
+
+%.test: %.c %.expect
+	@echo PPTest $* ...
+	@$(TCC) -E -P $< >$*.output 2>&1 ; \
+	    diff -Nu -b -B -I "^#" $(EXTRA_DIFF_OPTS) $*.expect $*.output \
+	    && rm -f $*.output
+
+# automatically generate .expect files with gcc:
+%.expect :
+	gcc -E -P $*.c >$*.expect 2>&1
+
+# tell make not to delete
+.PRECIOUS: %.expect
+
+clean:
+	rm -vf *.output
+
+# 02.test : EXTRA_DIFF_OPTS = -w
+# 03.test : EXTRA_DIFF_OPTS = -w
+# 04.test : EXTRA_DIFF_OPTS = -w
+# 10.test : EXTRA_DIFF_OPTS = -w
+
+# diff options:
+# -b ighore space changes
+# -w ighore all whitespace
+# -B ignore blank lines
+# -I <RE> ignore lines matching RE