Back when I introduced debug markers, I seem to have been under the impression that location line 0 would only ever occur for unknown and builtin locations.
Though line 0 never comes up in normal processing of source files, and debug info formats often cannot represent them, I suppose there's no need to preemptively discard them during final. Regstrapped on x86_64-linux-gnu. Ok to install? for gcc/ChangeLog PR debug/97714 * final.c (notice_source_line): Narrow down the condition to skip a line-0 marker. for gcc/testsuite/ChangeLog PR debug/97714 * gcc.dg/pr97714.c: New. --- gcc/final.c | 11 +++++------ gcc/testsuite/gcc.dg/debug/pr97714.c | 11 +++++++++++ 2 files changed, 16 insertions(+), 6 deletions(-) create mode 100644 gcc/testsuite/gcc.dg/debug/pr97714.c diff --git a/gcc/final.c b/gcc/final.c index fc9a05e335f47..45f7f39f0885b 100644 --- a/gcc/final.c +++ b/gcc/final.c @@ -3250,12 +3250,11 @@ notice_source_line (rtx_insn *insn, bool *is_stmt) { location_t loc = NOTE_MARKER_LOCATION (insn); expanded_location xloc = expand_location (loc); - if (xloc.line == 0) - { - gcc_checking_assert (LOCATION_LOCUS (loc) == UNKNOWN_LOCATION - || LOCATION_LOCUS (loc) == BUILTINS_LOCATION); - return false; - } + if (xloc.line == 0 + && (LOCATION_LOCUS (loc) == UNKNOWN_LOCATION + || LOCATION_LOCUS (loc) == BUILTINS_LOCATION)) + return false; + filename = xloc.file; linenum = xloc.line; columnnum = xloc.column; diff --git a/gcc/testsuite/gcc.dg/debug/pr97714.c b/gcc/testsuite/gcc.dg/debug/pr97714.c new file mode 100644 index 0000000000000..dba17831d6943 --- /dev/null +++ b/gcc/testsuite/gcc.dg/debug/pr97714.c @@ -0,0 +1,11 @@ +/* { dg-do compile } */ +/* { dg-options "-O -g" } */ + +void +function () +{ + if (0) + { +#line 0 "whatever" + } +} -- Alexandre Oliva, happy hacker https://FSFLA.org/blogs/lxo/ Free Software Activist GNU Toolchain Engineer Vim, Vi, Voltei pro Emacs -- GNUlius Caesar