diff options
Diffstat (limited to 'asm/labels.c')
| -rw-r--r-- | asm/labels.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/asm/labels.c b/asm/labels.c index ead1f34b..7d87503d 100644 --- a/asm/labels.c +++ b/asm/labels.c @@ -505,6 +505,12 @@ void define_label(const char *label, int32_t segment, nasm_nonfatal("label `%s' inconsistently redefined", lptr->defn.label); noteflags = ERR_NOTE|ERR_HERE; } else { + /*! + *!label-redef [off] label redefined to an identical value + *! warns if a label is defined more than once, but the + *! value is identical. It is an unconditional error to + *! define the same label more than once to \e{different} values. + */ nasm_warnf(WARN_LABEL_REDEF|ERR_PASS2, "label `%s' redefined to an identical value", lptr->defn.label); noteflags = ERR_NOTE|ERR_HERE|WARN_LABEL_REDEF|ERR_PASS2; @@ -516,13 +522,16 @@ void define_label(const char *label, int32_t segment, lptr->defn.label); src_set(saved_line, saved_fname); } else if (changed && pass0 > 1 && lptr->defn.type != LBL_SPECIAL) { - /* - * WARN_LABEL_REDEF_LATE defaults to an error, as this should never actually happen. - * Just in case this is a backwards compatibility problem, still make it a - * warning so that the user can suppress or demote it. + /*! + *!label-redef-late [err] label (re)defined during code generation + *! the value of a label changed during the final, code-generation + *! pass. This may be the result of strange use of the + *! preprocessor. This is very likely to produce incorrect code and + *! may end up being an unconditional error in a future + *! version of NASM. * - * As a special case, LBL_SPECIAL symbols are allowed to be changed - * even during the last pass. + * Note: As a special case, LBL_SPECIAL symbols are allowed + * to be changed even during the last pass. */ nasm_warnf(WARN_LABEL_REDEF_LATE, "label `%s' %s during code generation", |