PIC16: externs removed if function unreferenced in C source

The Small Device C Compiler (SDCC), targeting 8-bit architectures

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#1717 PIC16: externs removed if function unreferenced in C source

Status: open

Owner: nobody

Labels: pic16 target (188)

Category: PIC16

Priority: 5

Updated: 2013-07-16

Created: 2010-11-27

Creator: Christopher Head

Private: No

The compiler does not emit an EXTERN directive into the assembly source for a function whose prototype is provided but that is not called in the C source, meaning if one attempts to call it in assembly source (including, for example, with DEF_HANDLER2 from signal.h), a "Symbol not previously defined" error results. Seeing as an assembly language EXTERN directive doesn't affect the generated code in any way, why not just leave them all in?

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Maarten Brock - 2011-09-15

summary: externs removed if function unreferenced in C source --> PIC16: externs removed if function unreferenced in C source
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Philipp Klaus Krause - 2013-07-16

Category: --> PIC16
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PIC16: externs removed if function unreferenced in C source

The Small Device C Compiler (SDCC), targeting 8-bit architectures

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#1717 PIC16: externs removed if function unreferenced in C source

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