Bug 532044 - php fails to build on ARM because of an alignment error
Summary: php fails to build on ARM because of an alignment error
Alias: None
Product: Fedora
Classification: Fedora
Component: php
Version: 12
Hardware: arm9
OS: Linux
Target Milestone: ---
Assignee: Joe Orton
QA Contact: Fedora Extras Quality Assurance
Depends On:
Blocks: ARMTracker
TreeView+ depends on / blocked
Reported: 2009-10-30 12:49 UTC by Kedar Sovani
Modified: 2010-12-04 03:36 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2010-12-04 03:36:02 UTC
Type: ---

Attachments (Terms of Use)
proposed fix (481 bytes, patch)
2009-10-30 12:52 UTC, Kedar Sovani
no flags Details | Diff

Description Kedar Sovani 2009-10-30 12:49:32 UTC
When the "php" binary is executed to create phar.php, an alignment error is encountered thus causing the build to fail.

Comment 1 Kedar Sovani 2009-10-30 12:52:10 UTC
Created attachment 366794 [details]
proposed fix

proposed fix

Comment 2 Joe Orton 2009-10-30 13:48:46 UTC
-	(z)->value = (v)->value; \
+	memcpy(&(z)->value, &(v)->value, sizeof((z)->value)); \

those are logically equivalent in C, surely?  Where's the alignment issue occurring with the use of this macro?

Comment 3 Jitesh Shah 2009-10-30 15:51:08 UTC
If (z)->value or (v)->value is improperly aligned, the first statement will fault. But, memcpy falls back to a byte-by-byte copy, thus, eliminating any unaligned accesses.

Comment 4 Kedar Sovani 2009-10-30 16:07:46 UTC

ARM expects pointers/words are aligned on word boundary. The pointer values that are passed to this assignment are now aligned on such a boundary, thus causing the problems. 

Here is the failed log:

Here is the successful build after applying this patch:

Comment 5 Bug Zapper 2009-11-16 14:41:04 UTC
This bug appears to have been reported against 'rawhide' during the Fedora 12 development cycle.
Changing version to '12'.

More information and reason for this action is here:

Comment 6 Bug Zapper 2010-11-04 06:58:50 UTC
This message is a reminder that Fedora 12 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
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Comment 7 Bug Zapper 2010-12-04 03:36:02 UTC
Fedora 12 changed to end-of-life (EOL) status on 2010-12-02. Fedora 12 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

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