[7287] in Athena Bugs
rt 7.2R: hc2.1y
daemon@ATHENA.MIT.EDU (daemon@ATHENA.MIT.EDU)
Tue Mar 12 13:24:08 1991
Date: Tue, 12 Mar 91 13:23:44 EST
From: John T Kohl <jtkohl@MIT.EDU>
To: bugs@MIT.EDU
System name: soup
Type and version: RTPC-ROMPC 7.2R
Display type: apa16
What were you trying to do?
Compile some ISODE code.
What's wrong:
The compiler barfs on a legitimate cast. Both the pmax
cc1.31 and VAX PCC can compile it without complaint.
I boiled this problem down to this fragment:
typedef struct {
int pe_type; /* Type of entry */
} tpe;
#define NULLTPE ((tpe *)0)
typedef struct {
int pe_type; /* Type of entry */
} ptpe;
#define NULLPTPE ((ptpe *)0)
typedef struct {
ptpe **md_ptab; /* Pointer to printing tables */
} modtyp;
#define NULLMODTYP ((modtyp *)0)
void
dmp_tpe(mod)
modtyp *mod;
{
tpe **parq;
((ptpe **)parq) = mod->md_ptab;
(ptpe **)parq = mod->md_ptab;
}
The errors it generates:
% hc -v -c broken-hc.c
/lib/cpp -D__STDC__ -D__HIGHC__ broken-hc.c /tmp/pp.014283
/usr/lib/hc1com /tmp/pp.014283 -efile @E -silent -on CHAR_DEFAULT_UNSIGNED -offDOUBLE_MATH_ONLY -on DOUBLE_RETURN -on LONG_ENUMS -off PCC -on PCC_MSGS -ofile /tmp/IL1014283 -vfile /tmp/var014283 -machine rtfl -define ibm032 1 -pro hc.pro -copyr -dir /usr/include
MetaWare High C Compiler R2.1y
(c) Copyright 1987-89, MetaWare Incorporated
E "broken-hc.c",L22/C19: (syntactic) unexpected symbol:'='
REPAIR: ';' replaces '='@"broken-hc.c",L22/C19
1 user error No warnings
Exit 8 hc -v -c broken-hc.c
-------
Note that line 21 works fine, but line 22 fails.
What should have happened:
The compiler shouldn't gratuitously fail.
Please describe any relevant documentation references:
X3.159
