abcm2ps crash in set_stems at music.:4400 ... with example input file. Running git clone/pull from today.

[marshallmidden]

sigh Provided: macos lldb output of interest. The arguments of abcm2ps. The input file. And how I changed things to fix/get around it. (And something else, which I have forgotten ...)

• frame #0: 0x00000001004a6148 abcm2ps`output_music [inlined] set_stems at music.c:4400:13 [opt]
• (SYMBOL *) s2 = NULL

PROGRAM='/Users/m4/Desktop/saved-m4-stuff/src/abcm2ps/abcm2ps' PROGRAM_ARGS="-M -b 1 ${INPUT} -i -N 2 -j 1"

Input: %abc X:1 %%staves [ (1 2) ] %%combinevoices 1 L:1/4 K:C V:1 [L:1/4][M:2/4]G/4=e/4=e/4=e/4[L:1/16](4:4:4=e=e=e=e |] V:2 [L:1/4][M:2/4]z/4B/4B/4B/4[L:1/16](4:4:4BBBB |]

git diff:

@@ -4396,6 +4397,7 @@ static void set_stems(void) if (s->sflags & S_FEATHERED_BEAM) nflags = ++s->nflags; for (s2 = s->next; /s2/; s2 = s2->next) {

• if (s2 == NULL) break; if (s2->abc_type == ABC_T_NOTE) { if (s->sflags & S_FEATHERED_BEAM) s2->nflags++; @@ -4404,14 +4406,17 @@ static void set_stems(void) } } / if (s2) /
• if (s2) if (s2->nflags > nflags) nflags = s2->nflags; } else if ((s->sflags & (S_BEAM_ST | S_BEAM_END)) == S_BEAM_END) {
• for (s2 = s->prev; /s2/; s2 = s2->prev) { +// for (s2 = s->prev; /s2/; s2 = s2->prev) {
• for (s2 = s->prev; s2; s2 = s2->prev) { if (s2->sflags & S_BEAM_ST) break; } / if (s2) /
• if (s2) if (s2->nflags > nflags) nflags = s2->nflags; }