print errors to stderr
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@ -153,7 +153,7 @@ void issue_warning(const char * const format, ...) {
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char * msg;
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const int ignore = vasprintf(&msg, format, args);
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(void)ignore;
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printf("\033[1m%s:%d:\033[0m \033[35mWarning\033[0m: %s.\n",
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fprintf(stderr, "\033[1m%s:%d:\033[0m \033[35mWarning\033[0m: %s.\n",
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yyfilename,
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yylineno,
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msg
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@ -171,7 +171,7 @@ void issue_error(const char * const format, ...) {
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char * msg;
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const int ignore = vasprintf(&msg, format, args);
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(void)ignore;
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printf("\033[1m%s:%d:\033[0m \033[31mError\033[0m: %s.\n",
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fprintf(stderr, "\033[1m%s:%d:\033[0m \033[31mError\033[0m: %s.\n",
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yyfilename,
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yylineno,
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msg
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