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b2/: new diagnostic function yywarnf

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This commit is contained in:
Werner Almesberger
2012-04-28 22:38:06 -03:00
parent 8aa94edd2f
commit eabe0dc910
2 changed files with 13 additions and 0 deletions
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1
b2/lang.h
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@@ -16,6 +16,7 @@
void parse_hierarchy(void);
void parse_characteristics(void);
void yywarnf(const char *fmt, ...);
void yyerrorf(const char *fmt, ...);
void yyerror(const char *s);

12
b2/lang.l
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@@ -87,6 +87,18 @@ ID [-_A-Za-z0-9()+./]
%%
void yywarnf(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fprintf(stderr, "%d: warning: ", lineno);
vfprintf(stderr, fmt, ap) ;
fprintf(stderr, "\n");
va_end(ap);
}
void yyerrorf(const char *fmt, ...)
{
va_list ap;