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cpphash.c (collect_expansion): Trim trailing white space from macro definitions...

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* cpphash.c (collect_expansion): Trim trailing white space
	from macro definitions, but don't go past the last insertion
	point.
	* gcc.dg/cpp-redef.c: New test.

From-SVN: r32283
This commit is contained in:
Zack Weinberg 2000-03-01 19:12:18 +00:00 • committed by Zack Weinberg
parent 2bfa73e418
commit fbb886eb38
4 changed files with 35 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2000-03-01 Zack Weinberg <zack@wolery.cumb.org>
* cpphash.c (collect_expansion): Trim trailing white space
from macro definitions, but don't go past the last insertion
point.
Wed Mar 1 12:14:31 MET 2000 Jan Hubicka <jh@suse.cz>
* i386.md (mulqi3): New pattern.

6
gcc/cpphash.c
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@ -487,6 +487,12 @@ collect_expansion (pfile, arglist)
else if (last_token == PASTE)
cpp_error (pfile, "`##' at end of macro definition");
/* Trim trailing white space from definition. */
here = CPP_WRITTEN (pfile);
while (here > last && is_hspace (pfile->token_buffer [here-1]))
here--;
CPP_SET_WRITTEN (pfile, here);
CPP_NUL_TERMINATE (pfile);
len = CPP_WRITTEN (pfile) - start + 1;
exp = xmalloc (len + 4); /* space for no-concat markers at either end */

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2000-03-01 Zack Weinberg <zack@wolery.cumb.org>
* gcc.dg/cpp-redef.c: New test.
2000-02-29 Nathan Sidwell <nathan@codesourcery.com>
* g++.old-deja/g++.pt/unify7.C: New test.

19
gcc/testsuite/gcc.dg/cpp-redef.c Normal file
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@ -0,0 +1,19 @@
/* Test for redefining macros with insignificant (i.e. whitespace)
differences. */
/* { dg-do preprocess } */
#define foo bar
#define /* x */ foo /* x */ bar /* x */
#define quux(thud) a one and a thud and a two
#define /**/ quux( thud ) /**/ a one and a /**/ thud /**/ and /**/ a two
#define quux(thud) a one and a thud and a two /* bah */
/* { dg-bogus "redefined" "foo redefined" { target *-*-* } 7 } */
/* { dg-bogus "redefined" "quux redefined" { target *-*-* } 10 } */
/* { dg-bogus "redefined" "quux redefined" { target *-*-* } 11 } */
/* { dg-bogus "previous def" "foo prev def" { target *-*-* } 6 } */
/* { dg-bogus "previous def" "quux prev def" { target *-*-* } 9 } */
/* { dg-bogus "previous def" "quux prev def" { target *-*-* } 10 } */