[sdcc-devel] [ sdcc-Bugs-3410620 ] warning 139

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Bugs item #3410620, was opened at 2011-09-16 09:49
Message generated for change (Tracker Item Submitted) made by andypeters
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Category: C-Front End
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Andy Peters (andypeters)
Assigned to: Nobody/Anonymous (nobody)
Summary: warning 139

Initial Comment:
sdcc issues the above warning when an ISR calls a function through a function pointer.

Assume:

#define INTREGBANK 1
typedef void (*phandler_t)(void);   // add a __using(INTREGBANK) here does not matter
phandler_t phandlers[8];

void Int0_isr(void) __interrupt(0) __using(INTREGBANK)
{
    unsigned char intsrc;
    intsrc = GetInterruptSource;
    phandlers[intsrc](); // warning refers to this line
} // Int0_isr

This results in a warning:
..main.c:150: warning 139: call via function pointer in ISR using non-zero register bank.  Cannot determine which register bank to save.

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You can respond by visiting: 
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