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| author | Jason Merrill <jason@redhat.com> | 2003-04-29 16:25:11 -0400 |
|---|---|---|
| committer | Jason Merrill <jason@gcc.gnu.org> | 2003-04-29 16:25:11 -0400 |
| commit | 72e940d286a2ffee8fafa04431da540d9646622e (patch) | |
| tree | 72cefeccbafcc29fe61400e39d0ce726e6b585bb /gcc | |
| parent | 60cde93696c3a8c25f85606b31645fb9c17af56b (diff) | |
| download | gcc-72e940d286a2ffee8fafa04431da540d9646622e.zip gcc-72e940d286a2ffee8fafa04431da540d9646622e.tar.gz gcc-72e940d286a2ffee8fafa04431da540d9646622e.tar.bz2 | |
re PR middle-end/10336 (ICE with -Wunreachable-code)
PR middle-end/10336
* jump.c (never_reached_warning): Really stop looking if we reach
the beginning of the function.
From-SVN: r66249
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/jump.c | 14 |
2 files changed, 14 insertions, 6 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c22b671..b7bb449 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2003-04-29 Jason Merrill <jason@redhat.com> + + PR middle-end/10336 + * jump.c (never_reached_warning): Really stop looking if we reach + the beginning of the function. + 2003-04-29 Bob Wilson <bob.wilson@acm.org> * config/xtensa/elf.h (SIZE_TYPE, PTRDIFF_TYPE, USER_LABEL_PREFIX): @@ -1912,13 +1912,15 @@ never_reached_warning (avoided_insn, finish) /* Back up to the first of any NOTEs preceding avoided_insn; flow passes us the head of a block, a NOTE_INSN_BASIC_BLOCK, which often follows the line note. */ - for (insn = PREV_INSN (avoided_insn); ; insn = PREV_INSN (insn)) - if (GET_CODE (insn) != NOTE - || NOTE_LINE_NUMBER (insn) == NOTE_INSN_FUNCTION_BEG) - { - insn = NEXT_INSN (insn); + insn = avoided_insn; + while (1) + { + rtx prev = PREV_INSN (insn); + if (prev == NULL_RTX + || GET_CODE (prev) != NOTE) break; - } + insn = prev; + } /* Scan forwards, looking at LINE_NUMBER notes, until we hit a LABEL in case FINISH is NULL, otherwise until we run out of insns. */ |