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compiler: remove dead code (a tcc bug fix)

pull/2763/head
Delyan Angelov 2019-11-14 10:57:28 +02:00 committed by Alexander Medvednikov
parent 34c4565f7c
commit a329104dcb
1 changed files with 0 additions and 20 deletions
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20
vlib/compiler/compile_errors.v
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@ -225,28 +225,8 @@ fn (s mut Scanner) get_scanner_pos_of_token(t &Token) ScannerPos {
// of the token.
s.goto_scanner_position(ScannerPos{})
mut prevlinepos := 0
// NB: TCC BUG workaround: removing the `mut ate:=0 ate++` line
// below causes a bug in v, when v is compiled with tcc, and v
// wants to report the error: 'the following imports were never used:'
//
// This can be reproduced, if you follow the steps:
// a) ./v -cc tcc -o v compiler ;
// b) ./v vlib/builtin/hashmap_test.v'
//
// In this case, prevlinepos gets a random value on each run.
// Any kind of operation may be used seemingly, as long as
// there is a new stack allocation that will 'protect' prevlinepos.
//////////////////////////////////////////////////////////////////
mut ate:=0 ate++ // This var will be smashed by TCC, instead of
/////////////////// prevlinepos. The cause is the call to
/////////////////// s.get_scanner_pos()
/////////////////// which just returns a struct, and that works
/////////////////// in gcc and clang, but causes the TCC problem.
maxline := imin( s.nlines, tline + 2 * error_context_after)
for {
prevlinepos = s.pos
if s.pos >= s.text.len { break }
if s.line_nr > maxline { break }
////////////////////////////////////////