#3278 sdcc FATAL Compiler Internal Error

[OFreddy]

description:
Compiling the attached code with sdcc produces a FATAL Compiler Internal Error:

main.c:644: error 9: FATAL Compiler Internal Error in file '/home/sdcc-builder/build/sdcc-build/orig/sdcc/src/stm8/peep.c' line number '89' : readint() got non-integer argument:
Contact Author with source code
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command line:
sdcc -mstm8 -o "." --std-c99 -c "main.c"

sdcc version:
The fault occurs with sdcc Version V4.1.0 when using sdcc-4.1.0-x64-setup.exe on a windows 10 64-bit operating system. I have tested it against V3.6.0 which works fine without any issues.

SDCC : mcs51/z80/z180/r2k/r2ka/r3ka/gbz80/tlcs90/ez80_z80/z80n/ds390/pic16/pic14/TININative/ds400/hc08/s08/stm8/pdk13/pdk14/pdk15 4.1.0 #12072 (MINGW64)
published under GNU General Public License (GPL)

[Philipp Klaus Krause]

I can reproduce the issue using current SDCC 4.1.10 #12685 on Debian GNU/Linux testing.

[Philipp Klaus Krause]

The attached main-minimal.c reproduces the bug, and is much shorter than main.c.

[Philipp Klaus Krause]

Looks like the issue is triggered by the use of upper-case for the inline assembler code in STARTUP_SWIM_DELAY_5S followed by a function call for which tail-call optimization optimized a call/ret sequence to jmp.

[Philipp Klaus Krause]

Self-contained sample to reproduce (the issue still exists in current trunk):

#define STARTUP_SWIM_DELAY_5S \
{ \
__asm PUSHW X \
PUSH A \
LDW X, #0xFFFF \
loop1: LD A, #50 \
\
loop2: DEC A \
JRNE loop2 \
\
DECW X \
JRNE loop1 \
\
POP A \
POPW X \
__endasm; }

void TIMER_Config(void);

void main(void)
{
    STARTUP_SWIM_DELAY_5S;

    TIMER_Config();
}

[Philipp Klaus Krause]

Fixed in [r15573].