Bug#157416: cpp-3.2: _Pragma within macros is improperly expanded

[Andrew Suffield <asuffield@debian.org>]

reopen 157416
thanks

Nope, still not right. Here's a new case where it breaks:

==
aps100@cyclone:~/tmp$ cat foo.c
#define ALPHA(A) alpha_ ## A
#define BETA(B) beta_ ## B
#define GAMMA(C) _Pragma("moose") ALPHA(C) BETA(C)
GAMMA(baz);
aps100@cyclone:~/tmp$ cpp-3.2 foo.c
# 1 "foo.c"
# 1 "<built-in>"
# 1 "<command line>"
# 1 "foo.c"




# 4 "foo.c"
#pragma moose 
# 4 "foo.c"
alpha_baz beta_alpha_baz;
aps100@cyclone:~/tmp$ cpp-2.95 foo.c
# 1 "foo.c"



_Pragma("moose") alpha_baz    beta_baz    ;
==

Note how beta_baz has become beta_alpha_baz in 3.2. This only happens
when the _Pragma is present, so I presume it's the same bug in another
form.

But wait! It gets better:
==
aps100@cyclone:~/tmp$ cat foo.c
#define ALPHA
#define BETA(B) beta_ ## B
#define GAMMA(C) _Pragma("moose") ALPHA BETA(C)
GAMMA(baz);
aps100@cyclone:~/tmp$ cpp-3.2 foo.c
# 1 "foo.c"
# 1 "<built-in>"
# 1 "<command line>"
# 1 "foo.c"




# 4 "foo.c"
#pragma moose 
# 4 "foo.c"
cpp-3.2: Internal error: Aborted (program cpp0)
Please submit a full bug report.
==

-- 
  .''`.  ** Debian GNU/Linux ** | Andrew Suffield
 : :' :  http://www.debian.org/ | Dept. of Computing,
 `. `'                          | Imperial College,
   `-             -><-          | London, UK

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