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gc: improve error message for x \= 0

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was
x.go:2: syntax error: unexpected $undefined

now
x.go:2: syntax error: unexpected \

R=ken2
CC=golang-dev
https://golang.org/cl/2267044
This commit is contained in:
Russ Cox 2010-09-24 17:09:31 -04:00
parent ac771a8a47
commit b1f44a120f
1 changed files with 5 additions and 1 deletions
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6
src/cmd/gc/lex.c
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@ -538,7 +538,7 @@ isfrog(int c)
return 0; return 0;
return 1; return 1;
} }
if(0x80 <= c && c <= 0xa0) // unicode block including unbreakable space. if(0x7f <= c && c <= 0xa0) // DEL, unicode block including unbreakable space.
return 1; return 1;
return 0; return 0;
} }
@ -947,6 +947,10 @@ lx:
yyerror("illegal character 0x%ux", c); yyerror("illegal character 0x%ux", c);
goto l0; goto l0;
} }
if(importpkg == nil && (c == '#' || c == '$' || c == '?' || c == '@' || c == '\\')) {
yyerror("%s: unexpected %c", "syntax error", c);
goto l0;
}
return c; return c;
asop: asop: