Bugs item #2894927, was opened at 2009-11-10 01:13
Message generated for change (Tracker Item Submitted) made by stmane
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Category: Build
Group: buildtools "stable"
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Stefan Manegold (stmane)
Assigned to: Sjoerd Mullender (sjoerd)
Summary: Mx: @include does not write any "#line" directives
Initial Comment:
With "@include", Mx does not write any "#line# directives into the (C-) output
file.
Consequently, tools like debuggers (e.g., gdb) or Coverity do point to
incorrect source code lines for all .mx files that use @include (e.g., most of
the C code of the M5 back-end).
A simple example:
========
$ cat x.mx
@f x
@c
x3
x4
@include y.mx
x6
x7
@include z.mx
x9
x10
@:zf@
x12
========
$ cat y.mx
y1
y2
========
$ cat z.mx
@= zf
z2
z3
@c
========
$ Mx -c x.mx
x.mx: ./x.c - not modified
========
The incorrect output
--------
$ cat x.c
#line 3 "x.mx"
x3
x4
y1
y2
x6
x7
#line 10 "x.mx"
x9
x10
#line 10 "x.mx"
z2
z3
#line 12 "x.mx"
x12
========
Diff between incorrect (left) and correct/expected (right) output.
--------
$ diff -y -W30 x.c x.c.expected
#line 3 "x.mx #line 3 "x.mx
x3 x3
x4 x4
> #line 1 "y.mx
y1 y1
y2 y2
> #line 6 "x.mx
x6 x6
x7 x7
#line 10 "x.m | #line 9 "x.mx
x9 x9
x10 x10
#line 10 "x.m | #line 2 "z.mx
z2 z2
z3 z3
#line 12 "x.m | #line 11 "x.m
x12 x12
========
I tried to fix this, but turned out not to be familiar enough with the Mx code
to do it "quickly".
Hence, this report to document the status until I (or someone else) manages to
fix this.
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