[Issue 5597] New: [64-bit] Illegal Instruction on Ancient Hardware

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=5597

           Summary: [64-bit] Illegal Instruction on Ancient Hardware
           Product: D
           Version: D2
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Keywords: wrong-code
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: dsimcha at yahoo.com


--- Comment #0 from David Simcha <dsimcha at yahoo.com> 2011-02-16 08:17:59 PST ---
The following code works on newer hardware, but terminates with "Illegal
instruction" on some ancient CPUs (details below):

import std.conv;

void main() {
    string foo = "1.0";
    parse!float(foo);
}

The ancient hardware in question (first CPU from cat /proc/cpuinfo):

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 15
model           : 4
model name      :                Intel(R) Xeon(TM) MP CPU 3.66GHz
stepping        : 1
cpu MHz         : 3657.816
cache size      : 1024 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 1
fpu             : yes
fpu_exception   : yes
cpuid level     : 5
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor
ds_cpl est tm2 cid cx16 xtpr
bogomips        : 7321.85
clflush size    : 64
cache_alignment : 128
address sizes   : 40 bits physical, 48 bits virtual
power management:

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