[EGIT] [legacy-imlib2] 02/02: loader_jpeg: silence -Wcast-align error on 32-bit ARM architectures

[Enlightenment Git]

This is an automated email from the git hooks/post-receive script.

git pushed a commit to branch master
in repository legacy-imlib2.

View the commit online.

commit 62baa512449d954a276a180816548ffdf9869923
Author: Dominique Leuenberger <dims...@opensuse.org>
AuthorDate: Wed Sep 2 14:56:42 2026 +0200

    loader_jpeg: silence -Wcast-align error on 32-bit ARM architectures
    
    32-bit ARM architectures (like armv6l and armv7l) enforce strict
    alignment requirements for certain complex variables like `sigjmp_buf`
    (which often requires 8-byte alignment due to vector/VFP registers).
    
    When casting the generic `jpeg_error_mgr *` pointer (`jcp->err` which
    only
    guarantees 4-byte alignment) to the larger internal `ImLib_JPEG_data
    *`,
    GCC flags an alignment promotion error under `-Werror=cast-align`.
    
    Because `struct jpeg_error_mgr` is guaranteed to be the first member
    of `ImLib_JPEG_data`, their memory offsets are structurally identical.
    Fix this by routing the cast through an intermediate `void *` pointer,
    safely indicating to the compiler that alignment constraints are
    respected
    and clearing the build failure on 32-bit ARM toolchains.
---
 src/modules/loaders/loader_jpeg.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/modules/loaders/loader_jpeg.c b/src/modules/loaders/loader_jpeg.c
index 75e1ab2..e4a88a2 100644
--- a/src/modules/loaders/loader_jpeg.c
+++ b/src/modules/loaders/loader_jpeg.c
@@ -19,7 +19,7 @@ typedef struct {
 static void
 _JPEGFatalErrorHandler(j_common_ptr jcp)
 {
-    ImLib_JPEG_data *jd = (ImLib_JPEG_data *) jcp->err;
+    ImLib_JPEG_data *jd = (ImLib_JPEG_data *)(void *) jcp->err;
 
 #if 0
     jcp->err->output_message(jcp);
@@ -31,7 +31,7 @@ static void
 _JPEGErrorHandler(j_common_ptr jcp)
 {
 #if 0
-    ImLib_JPEG_data *jd = (ImLib_JPEG_data *) jcp->err;
+    ImLib_JPEG_data *jd = (ImLib_JPEG_data *)(void *) jcp->err;
 
     jcp->err->output_message(jcp);
     siglongjmp(jd->setjmp_buffer, 1);
@@ -42,7 +42,7 @@ static void
 _JPEGErrorHandler2(j_common_ptr jcp, int msg_level)
 {
 #if 0
-    ImLib_JPEG_data *jd = (ImLib_JPEG_data *) jcp->err;
+    ImLib_JPEG_data *jd = (ImLib_JPEG_data *)(void *) jcp->err;
 
     jcp->err->output_message(jcp);
     siglongjmp(jd->setjmp_buffer, 1);


-- 
To stop receiving notification emails like this one, please contact
the administrator of this repository.