[sdcc-devel] [ sdcc-Bugs-2935162 ] LONG_MIN as float initializer looses sign

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Bugs item #2935162, was opened at 2010-01-19 11:17
Message generated for change (Comment added) made by maartenbrock
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>Category: C-Front End
>Group: fixed
>Status: Closed
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Frieder Ferlemann (frief)
>Assigned to: Maarten Brock (maartenbrock)
Summary: LONG_MIN as float initializer looses sign

Initial Comment:
using LONG_MIN as a float initializer looses sign without a warning (SDCC #5614)

----8<---------------------------------------------------------
#include <limits.h>

const float a[] =
{
  LONG_MAX,     // .byte #0x00,#0x00,#0x00,#0x4F ;  2.147484e+09
  LONG_MIN,     // .byte #0x00,#0x00,#0x00,#0x4F ;  2.147484e+09 ?

  12345678901,  // .byte #0x00,#0x00,#0x80,#0x4F ;  4.294967e+09
 -12345678901,  // .byte #0x00,#0x00,#0x80,#0x3F ;  1.000000e+00 ?

  12345678901L, // .byte #0x00,#0x00,#0x00,#0x4F ;  2.147484e+09
 -12345678901L, // .byte #0x00,#0x00,#0x00,#0xCF ; -2.147484e+09

  2147483647L,  // .byte #0x00,#0x00,#0x00,#0x4F ;  2.147484e+09
 -2147483648L,  // .byte #0x00,#0x00,#0x00,#0xCF ; -2.147484e+09

  0.0,          // .byte #0x00,#0x00,#0x00,#0x00 ;  0.000000e+00
 -0.0,          // .byte #0x00,#0x00,#0x00,#0x80 ; -0.000000e+00

  ULONG_MAX,    // .byte #0x00,#0x00,#0x80,#0x4F ;  4.294967e+09
  1.0           // .byte #0x00,#0x00,#0x80,#0x3F ;  1.000000e+00
};
---->8---------------------------------------------------------

while it warns about line 8 and 9, it is does not warn about line 6

> sdcc -c test.c
test.c:8: warning 184: integer constant '12345678901' out of range, truncated to 4294967295.
test.c:9: warning 184: integer constant '12345678901' out of range, truncated to 4294967295.
test.c:11: warning 184: integer constant '12345678901L' out of range, truncated to 2147483647.
test.c:12: warning 184: integer constant '12345678901L' out of range, truncated to 2147483647.
test.c:15: warning 184: integer constant '2147483648L' out of range, truncated to 2147483647.


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>Comment By: Maarten Brock (maartenbrock)
Date: 2012-02-04 12:02

Message:
Fixed in SDCC 3.1.2 #7275.

----------------------------------------------------------------------

Comment By: Maarten Brock (maartenbrock)
Date: 2010-09-17 01:23

Message:
This bug is present in SDCC 2.9.0 and 2.9.7 #5973.

----------------------------------------------------------------------

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