lenny@icus.islp.ny.us (Lenny Tropiano) (02/18/89)
There appears to be a bug in the gcc1.33 compiler with enumerated types in
a case/switch statement. I am running this on an UNIX PC/3B1 ...
Here's the code that failed with gcc, and compiled fine with the stock compiler:
1
2 typedef enum {
3 apples,
4 oranges,
5 pears,
6 bananas } FRUIT;
7
8 FRUIT fruit;
9
10 main()
11 {
12 fruit = apples;
13
14 switch ((int)fruit) {
15 case (int)apples:
16 printf("apples\n");
17 break;
18 case (int)oranges:
19 printf("oranges\n");
20 break;
21 case (int)pears:
22 printf("pears\n");
23 break;
24 case (int)bananas:
25 printf("bananas\n");
26 break;
27 }
28 }
$ gcc -v -o testenum testenum.c
gcc version 1.33
/usr/gnu/lib/gcc-cpp -v -undef -D__GNUC__ -Dmc68k -Dunix -Dunixpc -D__mc68k__ -D__unix__ -D__unixpc__ test_enum.c /tmp/cca10154.cpp
GNU CPP version 1.33
/usr/gnu/lib/gcc-cc1 /tmp/cca10154.cpp -quiet -dumpbase test_enum.c -version -o /tmp/cca10154.s
GNU C version 1.33 (68k, SGS/AT&T unixpc syntax) compiled by GNU C version 1.33.
test_enum.c: In function main:
test_enum.c:15: case label does not reduce to an integer constant
test_enum.c:18: case label does not reduce to an integer constant
test_enum.c:21: case label does not reduce to an integer constant
test_enum.c:24: case label does not reduce to an integer constant
$ cc -v -o testenum testenum.c
Preprocessing ...
Compiling ...
Assembling ...
Loading ...
$ testenum
apples
NOTE: This bug was found while compiling gawk, using gcc. It failed in
the debug.c source on a similar enumerated type case/switch statement.
-Lenny
--
Lenny Tropiano ICUS Software Systems [w] +1 (516) 582-5525
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