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Fix bad code generation

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multiple modifications of the same variable between sequence
points leads to undefined behaviour.
This commit is contained in:
Olaf Seibert
2015-04-27 23:20:16 +02:00
parent 58b59dbaa1
commit f5ed23867f
1 changed files with 2 additions and 1 deletions
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3
src/kn10def.h
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@@ -235,7 +235,8 @@ typedef int pcinc_t; /* Type of all instruction routines */
#if KLH10_EXTADR
# define PC_ADDXCT(x) { register pcinc_t i__ = (x); if (i__) PC_ADD(i__); }
#else
# define PC_ADDXCT(x) (cpu.mr_PC += (x)) /* For now; fix up later? */
# define PC_ADDXCT(x) { volatile pcinc_t i__ = (x); cpu.mr_PC += i__; }
/*# define PC_ADDXCT(x) (cpu.mr_PC += (x)) / * For now; fix up later? */
#endif
/* Macros for putting PC into a word.