Skip to content

Fix regression in 0.10.x: fix type for is_detached #1123

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Jul 17, 2025

Conversation

barracuda156
Copy link
Contributor

This fixes regression in 0.10.0, see: #1122
Subsequent segfault still remains, but it also happens with 0.9.0 and 0.8.0.

@andrjohns @bnoordhuis

@@ -374,7 +374,7 @@ typedef struct JSVarRef {
struct {
int __gc_ref_count; /* corresponds to header.ref_count */
uint8_t __gc_mark; /* corresponds to header.mark/gc_obj_type */
bool is_detached;
uint8_t is_detached;
Copy link
Contributor

@bnoordhuis bnoordhuis Jul 16, 2025

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Ah... do IUC that sizeof(bool) > sizeof(char) on ppc?

Copy link
Contributor Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Bool is 4 bytes in ppc ABI.

Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

It took me a while to understand how this could've happened because it's from a change we picked from bellard/quickjs...

...but looks like @saghul changed the uint8_t in commit bellard/quickjs@9bd10d8 to a bool, not realizing JSVarRef is aliased as JSGCObjectHeader (and I didn't catch that during review either.)

LGTM but I'll merge this with a commit log explaining the above.

@@ -374,7 +374,7 @@ typedef struct JSVarRef {
struct {
int __gc_ref_count; /* corresponds to header.ref_count */
uint8_t __gc_mark; /* corresponds to header.mark/gc_obj_type */
bool is_detached;
uint8_t is_detached;
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

It took me a while to understand how this could've happened because it's from a change we picked from bellard/quickjs...

...but looks like @saghul changed the uint8_t in commit bellard/quickjs@9bd10d8 to a bool, not realizing JSVarRef is aliased as JSGCObjectHeader (and I didn't catch that during review either.)

LGTM but I'll merge this with a commit log explaining the above.

@bnoordhuis bnoordhuis merged commit b079cf7 into quickjs-ng:master Jul 17, 2025
127 checks passed
@barracuda156 barracuda156 deleted the powerpc branch July 17, 2025 12:02
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

Successfully merging this pull request may close these issues.

2 participants