https://sourceware.org/bugzilla/show_bug.cgi?id=16908
Bug ID: 16908
Summary: #line directives are ignored inside macros
Product: binutils
Version: 2.25 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: gas
Assignee: unassigned at sourceware dot org
Reporter: cmetcalf at tilera dot com
The following example generates wrong debug info for line numbers:
# 1 "file.S"
.macro test
# 100 "file.S"
.endm
nop
Because it is inside a macro, the "#line" directive is apparently ignored, and
the "nop" instruction ends up tagged as being on line 4.
This is particularly problematic as the C preprocessor will replace long C89
comment blocks, and long #if or #ifdef blocks that evaluate false, with just a
single "#line" directive. (Short runs are just converted to blank lines.)
The upshot is that using #ifdefs or C89 comments in .macro directives causes
the line info for debugging to become useless.
Tested on x86 with 2.20, 2.24, and git tip at commit c888a17da5c7; and on
tilegx with 2.21.
--
You are receiving this mail because:
You are on the CC list for the bug.
_______________________________________________
bug-binutils mailing list
bug-binutils@gnu.org
https://lists.gnu.org/mailman/listinfo/bug-binutils
