From c6b0dcb82d4db07a2f32c09a8c09c85a5f57248e Mon Sep 17 00:00:00 2001 From: Olivier Fourdan Date: Thu, 20 Jan 2022 10:20:38 +0100 Subject: [PATCH] render: Fix build with gcc 12 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The xserver fails to compile with the latest gcc 12: render/picture.c: In function ‘CreateSolidPicture’: render/picture.c:874:26: error: array subscript ‘union _SourcePict[0]’ is partly outside array bounds of ‘unsigned char[16]’ [-Werror=array-bounds] 874 | pPicture->pSourcePict->type = SourcePictTypeSolidFill; | ^~ render/picture.c:868:45: note: object of size 16 allocated by ‘malloc’ 868 | pPicture->pSourcePict = (SourcePictPtr) malloc(sizeof(PictSolidFill)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ render/picture.c: In function ‘CreateLinearGradientPicture’: render/picture.c:906:26: error: array subscript ‘union _SourcePict[0]’ is partly outside array bounds of ‘unsigned char[32]’ [-Werror=array-bounds] 906 | pPicture->pSourcePict->linear.type = SourcePictTypeLinear; | ^~ render/picture.c:899:45: note: object of size 32 allocated by ‘malloc’ 899 | pPicture->pSourcePict = (SourcePictPtr) malloc(sizeof(PictLinearGradient)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ render/picture.c: In function ‘CreateConicalGradientPicture’: render/picture.c:989:26: error: array subscript ‘union _SourcePict[0]’ is partly outside array bounds of ‘unsigned char[32]’ [-Werror=array-bounds] 989 | pPicture->pSourcePict->conical.type = SourcePictTypeConical; | ^~ render/picture.c:982:45: note: object of size 32 allocated by ‘malloc’ 982 | pPicture->pSourcePict = (SourcePictPtr) malloc(sizeof(PictConicalGradient)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors ninja: build stopped: subcommand failed. This is because gcc 12 has become stricter and raises a warning now. Fix the warning/error by allocating enough memory to store the union struct. Signed-off-by: Olivier Fourdan Acked-by: Michel Dänzer Closes: https://gitlab.freedesktop.org/xorg/xserver/-/issues/1256 --- render/picture.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/render/picture.c b/render/picture.c index afa0d258f..2be4b1954 100644 --- a/render/picture.c +++ b/render/picture.c @@ -865,7 +865,7 @@ CreateSolidPicture(Picture pid, xRenderColor * color, int *error) } pPicture->id = pid; - pPicture->pSourcePict = (SourcePictPtr) malloc(sizeof(PictSolidFill)); + pPicture->pSourcePict = (SourcePictPtr) malloc(sizeof(SourcePict)); if (!pPicture->pSourcePict) { *error = BadAlloc; free(pPicture); @@ -896,7 +896,7 @@ CreateLinearGradientPicture(Picture pid, xPointFixed * p1, xPointFixed * p2, } pPicture->id = pid; - pPicture->pSourcePict = (SourcePictPtr) malloc(sizeof(PictLinearGradient)); + pPicture->pSourcePict = (SourcePictPtr) malloc(sizeof(SourcePict)); if (!pPicture->pSourcePict) { *error = BadAlloc; free(pPicture); @@ -936,7 +936,7 @@ CreateRadialGradientPicture(Picture pid, xPointFixed * inner, } pPicture->id = pid; - pPicture->pSourcePict = (SourcePictPtr) malloc(sizeof(PictRadialGradient)); + pPicture->pSourcePict = (SourcePictPtr) malloc(sizeof(SourcePict)); if (!pPicture->pSourcePict) { *error = BadAlloc; free(pPicture); @@ -979,7 +979,7 @@ CreateConicalGradientPicture(Picture pid, xPointFixed * center, xFixed angle, } pPicture->id = pid; - pPicture->pSourcePict = (SourcePictPtr) malloc(sizeof(PictConicalGradient)); + pPicture->pSourcePict = (SourcePictPtr) malloc(sizeof(SourcePict)); if (!pPicture->pSourcePict) { *error = BadAlloc; free(pPicture); -- GitLab